Index

Symbols

! (in email address), Obsolete Mail Formats

% (in email address), Mixing Different Mail Formats

& (in email address), Mixing Different Mail Formats

/etc/aliases file, Managing Mail Aliases

/usr/sbin/sendmail, How Is Mail Delivered?

16450 UART, Serial Hardware

16550 UART, Serial Hardware

2.0 kernels

IP accounting, Configuring the Kernel for IP Accounting
IP firewalls, Original IP Firewall (2.0 Kernels)

2.2 kernels

IP accounting, Configuring the Kernel for IP Accounting
IP firewall chains, IP Firewall Chains (2.2 Kernels)
IP masquerade, Configuring the Kernel for IP Masquerade
NFS server support, The Network File System, Kernel-Based NFSv2 Server Support

2.4 kernels

IP accounting, Configuring the Kernel for IP Accounting
IP masquerade, Configuring the Kernel for IP Masquerade
netfilter and IP tables, Netfilter and IP Tables (2.4 Kernels)

8250 UART, Serial Hardware

A

A (DNS record), The DNS Database Files

absolute mail address, RFC-822

accept(), The Socket Library

access

granting, Using dip, Running in Server Mode, The exports File
NNTP, Restricting NNTP Access, NNTP Authorization
PPP, General Security Considerations
restricting, System Security, The CHAP Secrets File, The tcpd Access Control Facility, The exports File
to remote files, Mounting an NFS Volume
UUCP, Controlling Access to UUCP Features

access_db feature (sendmail), The access database

active file (INN), The active and newsgroups files

active hubs, Ethernets

active.times file (/var/lib/news), The active File

addresses

bang path, Obsolete Mail Formats
broadcast, IP Addresses, All About ifconfig
choosing (IP), Assigning IP Addresses
DNS resource record, The DNS Database Files
email, Email Addresses
Ethernet, Ethernets
Hesiod, The DNS Database
hybrid, Mixing Different Mail Formats
IP, The Internet Protocol, IP Addresses
loopback, IP Addresses
negotiation with PPP, Running pppd, Choosing IP Addresses, The CHAP Secrets File
UUCP hostname, Site Naming

alias files for Exim, Alias Files

aliases

C News and, The sys File
email, Managing Mail Aliases, Alias Files
hostname, The DNS Database, The DNS Database Files

aliasing, IP (Internet Protocol), Kernel Networking Options in Linux 2.0.0 and Higher

Allman, Eric, Electronic Mail

amateur radio protocols, Other Types of Hardware, Kernel Networking Options in Linux 2.0.0 and Higher

ampersand (in email address), Mixing Different Mail Formats

anonymous UUCP, Anonymous UUCP

ArcNet protocol driver, Other Network Types

ARP (Address Resolution Protocol), Address Resolution, Address Resolution

display table, Checking the ARP Tables
enabling/disabling, All About ifconfig
proxy, The PLIP Interface, Checking the ARP Tables, Routing Through a PPP Link

ARPANET, Introduction to TCP/IP Networks

article command (NNTP), Reading an Article from a Group

articles (news), What Is Usenet, Anyway?

batching, Article Batching
expiring, Expiring News Articles
listing, Listing New Articles
posting, Posting an Article
retrieving headers/message body, Retrieving an Article Header Only

async map, Link Control Options

Asynchronous Control Character Map, Link Control Options

ATM (Asynchronous Transfer Mode), Other Types of Hardware, The Socket Library

authentication

issues, System Security
on remote hosts, Configuring Remote Login and Execution
with PPP, Authentication with PPP, The PAP Secrets File

authoritative name server, The DNS Database, The DNS Database Files

authorization

with NNTP, NNTP Authorization
with PPP, The Point-to-Point Protocol

auto-IRQ, Ethernet Autoprobing

autoprobing

Ethernet, Ethernet Autoprobing
failure, Ethernet Autoprobing

AX.25 device, A Tour of Linux Network Devices

AX.25 protocol, Other Types of Hardware, The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher

AX25 HOWTO, Other Types of Hardware, Kernel Networking Options in Linux 2.0.0 and Higher

Aznar, Guylhem, Electronic Mail

B

Barber, Stan, NNTP and the nntpd Daemon

batching

email, How Is Mail Delivered?
news, How Does Usenet Handle News?, Article Batching

BBS (Bulletin Board System), Communications Software for Modem Links

Becker, Donald, Ethernet Installation

Berkeley Socket Library, The Socket Library

binaries, installing, Installing the Binaries

BIND (Berkeley Internet Name Domain), Name Service and Resolver Configuration, Running named, Other Useful Tools

bind(), The Socket Library

bindery manipulation tools, Browsing and Manipulating Bindery Data

Biro, Ross, Linux Networking

blacklist_recipients feature (sendmail), Barring users from receiving mail

BNC connector, Ethernets

body command (NNTP), Retrieving an Article Body Only

BOOTP, Address Resolution

bootup sequence, Configuring TCP/IP Networking

bounced mail, How Is Mail Delivered?

Brewery, Virtual, Example Network: The Virtual Brewery

bridges, Ethernets

broadcast address, All About ifconfig

bsmtp program, How Is Mail Delivered?

bulletin board, Communications Software for Modem Links

Burkett, B. Scott, Sources of Information

C

C News, Usenet History, C News

active file, Delivering News, Installation, The active File
archiving, Expiring News
article batching, Article Batching
batch parameters, Article Batching
batching, Delivering News, The sys File
compressing batches, Article Batching
control messages in, Control Messages
creating initial configuration, Installation
delivering news in, Delivering News
exchanging news, The sys File
excluding sites, The sys File
expiration of news in, Expiring News
history file, Delivering News, Expiring News
hostname aliases, The sys File
ihave/sendme, The sys File, Article Batching
in NFS, C News in an NFS Environment
installing, Installation
limiting a feed, The sys File, Miscellaneous Files
list of current groups, The active File, Miscellaneous Files
log files, Miscellaneous Files
moderated groups, Miscellaneous Files
newsmaster, Installation
NNTP support, The sys File, nntpd Interaction with C News
receiving news, Delivering News, The sys File
relaynews command, Delivering News
rnews command, The sys File
sending news, The sys File, Article Batching
spool directory, C News
sys file, Installation, The sys File
togo file, The sys File
update low water mark, The active File, Expiring News, trn Configuration
updating active files, The checkgroups Message
usenet, Installation
UUCP, Delivering News, Article Batching

cache (BIND option), The named.boot File

caching-only name server, Running pppd

Caldera (Linux distribution), Obtaining Linux

NetWare support, Caldera Support

call sequence checks, The Inner Workings of uucico

cancel control message, The cancel Message

canonical hostname, The DNS Database, The DNS Database Files

centralized mail handling, Mixing UUCP and RFC-822

chains

IP firewall, IP Firewall Chains (2.2 Kernels)
user-defined, User-defined chains, User-defined chains

CHAP (Challenge Handshake Authentication Protocol), The Point-to-Point Protocol, Authentication with PPP, The CHAP Secrets File

chargen (internal service), The inetd Super Server

chat program, PPP on Linux, Using chat to Automate Dialing, Using chat to Automate Dialing

PPP, Using chat to Automate Dialing
SLIP, A Sample Script

chat script, Using chat to Automate Dialing

UUCP, The login chat

checkgroups control message, The checkgroups Message, sendsys, version, and senduuname

checking

ARP tables, Checking the ARP Tables

Ethernet interface, Checking the ARP Tables

IP routing table, Ethernet Interfaces

mail queue, Mail Delivery Modes

network

configuration, The Loopback Interface, Ethernet Interfaces
interface, The Loopback Interface, Displaying Interface Statistics

NIS, Running an NIS Server, Setting Up an NIS Client with GNU libc

NNTP, nntpd Interaction with C News

PPP, Debugging Your PPP Setup

reachabilty, The Loopback Interface, Ethernet Interfaces

UUCP, Taylor Configuration Files

choosing

IP addresses, Assigning IP Addresses
NIS domain, Getting Acquainted with NIS
NIS maps, Choosing the Right Maps
UUCP hostname, Site Naming

CNAME (DNS record), The DNS Database Files

code, obtaining for

Linux network, Obtaining Linux, Where to Get the Code
sendmail, Installing sendmail

collisions (Ethernet), Ethernets

Collyer, Geoff, Usenet History

COM port, The Serial Device Special Files

comp.mail.uucp, Managing Taylor UUCP

configuration files

INN (Internet News), INN Configuration Files
sendmail, Overview of Configuration Files
Taylor UUCP, Taylor Configuration Files
UUCP, UUCP Configuration Files

configuring

C News, Installation

on a LAN, C News in an NFS Environment

default domain, Configuring Name Server Lookups Using resolv.conf

dip program, Using dip

elm (electronic mail), Configuring elm

Ethernet, Ethernet Installation, Ethernet Autoprobing, Ethernet Autoprobing

hostname, Setting the Hostname

resolution, Writing hosts and networks Files, Resolver Robustness

IP accounting, Configuring IP Accounting

IP masquerade, Configuring IP Masquerade

IPX, Kernel Networking Options in Linux 2.0.0 and Higher

kernel

for IP accounting, Configuring the Kernel for IP Accounting
with IP firewall, Setting Up Linux for Firewalling
for IP masquerade, Configuring the Kernel for IP Masquerade

name server, Running named, Other Useful Tools

networks

interfaces, Interface Configuration for IP
services, The inetd Super Server

newsfeeds, Configuring Newsfeeds

newsgroups, Configuring Newsgroups

newsreader, Newsreader Configuration, nn Configuration

NFS, Kernel Options in Linux 2.0 and Higher

NIS, Running an NIS Server, Setting Up an NIS Client with GNU libc

PLIP, The PLIP Driver

PPP, Kernel Options in Linux 2.0 and Higher, The Point-to-Point Protocol, Running pppd

remote login and execution, Configuring Remote Login and Execution

sendmail

for SMTP, Two Example sendmail.mc Files

serial port, Using the Configuration Utilities, The stty Command

SLIP, Serial Line IP, Running in Server Mode

server, Running in Server Mode

ssh command, Installing and Configuring ssh

Usenet news, Installation

connect(), The Socket Library

control.ctl file (INN), The control.ctl file

copyright information, Linux Network Administrator’s Guide, Second Edition Copyright Information

Corel (Linux distribution), Obtaining Linux

Cox, Alan, Linux Networking, Original IP Firewall (2.0 Kernels), IPX and Linux

creating

DNS zones, Reverse Lookups
NIS maps, Running an NIS Server
subdomains, How DNS Works
subnets, Creating Subnets, Reverse Lookups

cron, Maintaining Your System

expiring mail from, Expiring News

running

Exim via, Mail Delivery Modes
newsdaily in, Maintenance Tools and Tasks
nnmaster via, nn Configuration

CSLIP (Compressed Serial Line IP) protocol, IP Over Serial Lines, SLIP Operation, Running in Server Mode, The Point-to-Point Protocol

ctlinnd command (INN), Managing INN: The ctlinnd Command

D

D-Link pocket adaptor, Ethernet Installation

daemons, The inetd Super Server

wrapping via tcpd, The tcpd Access Control Facility

datagram types, ICMP protocol, ICMP datagram types

datagrams, TCP/IP Networks, The Internet Protocol

fragmentation of, Accounting by Service Port
IP chains vs. netfilter, Netfilter and IP Tables (2.4 Kernels)
IP filtering, What Is IP Filtering?
masquerading, IP Masquerade and Network Address Translation
stages of processing, Three Ways We Can Do Filtering

Davies, David C., Ethernet Installation

daytime (internal service), The inetd Super Server

dbmload program, Running an NIS Server

DDI (Device Driver Interface), Different Streaks of Development

Debian (Linux distribution), Obtaining Linux

debugging

DNS databases, Other Useful Tools
PPP setup, Debugging Your PPP Setup
UUCP setup, uucico Command-line Options

default email route, Mail Routing in the UUCP World

delegating

DNS subdomains, How DNS Works, Reverse Lookups
IP subnets, Subnetworks

delivering

email, How Is Mail Delivered?
news, How Does Usenet Handle News?, Delivering News

demand dialing, Demand Dialing

denial of service attacks, Methods of Attack

Dent, Arthur, Running in Server Mode

/dev/cua*, Accessing Serial Devices, The Serial Device Special Files

/dev/modem, The Serial Device Special Files

/dev/ttyS*, Accessing Serial Devices, The Serial Device Special Files

Device Driver Interface (DDI), Different Streaks of Development

device drivers, Configuring the Networking Hardware

device files, Configuring the Networking Hardware

devices

Linux network, A Tour of Linux Network Devices
major/minor numbers, Configuring the Networking Hardware
supporting IPX, Network Devices Supporting IPX

Dial-Up List (DUL), Protecting Against Mail Spam

dialin device, Accessing Serial Devices

dialing

demand, Demand Dialing
persistent, Persistent Dialing

dialout device, Accessing Serial Devices

dip program, Using dip, Running in Server Mode

diphosts file, Running in Server Mode

diplogin command, Running in Server Mode

diskless clients, Address Resolution

DISPLAY (environment variable), Introduction to TCP/IP Networks

displaying

ARP table, Checking the ARP Tables

interface

configuration, All About ifconfig

IP routing table, Ethernet Interfaces

irtt, Displaying the Routing Table

NIS map nicknames, Getting Acquainted with NIS

UUCP configuration, Taylor Configuration Files

DNS (Domain Name System), Resolving Host Names

checking, Verifying the Name Server Setup, Verifying the Name Server Setup
configuring server, Running named, Other Useful Tools
converting /etc/hosts, Other Useful Tools
databases, The DNS Database, The DNS Database Files
debugging databases, Other Useful Tools
query, Name Lookups with DNS
resolver and, The nsswitch.conf File
resource record, The DNS Database, The DNS Database Files
root name servers, Writing the Master Files, Verifying the Name Server Setup
time to live, Name Lookups with DNS, The DNS Database Files
tools, Other Useful Tools
zones, How DNS Works, The DNS Database Files

dnswalk program, Other Useful Tools

documentation (Linux)

commercial, Documentation Available Commercially
via FTP, Documentation Available via FTP
via WWW, Documentation Available via WWW

DOMAIN macro definition, DOMAIN

domainname command, Setting the Hostname, Getting Acquainted with NIS

domains, How DNS Works

mail routing, Mixing UUCP and RFC-822

names, How DNS Works

default, Configuring Name Server Lookups Using resolv.conf
NIS versus DNS, Setting the Hostname

NIS, Getting Acquainted with NIS, Setting Up an NIS Client with GNU libc

top-level, How DNS Works

dotted decimal notation, The Internet Protocol

dotted quad notation, The Internet Protocol, IP Addresses

drivers

ArcNet, Other Network Types
D-Link, Ethernet Installation
Ethernet, Ethernet Installation
FDDI, Other Network Types
PLIP, The PLIP Driver
PPP, The PPP and SLIP Drivers, PPP on Linux
SLIP, The PPP and SLIP Drivers
Token Ring, Other Network Types

Dryak, Ales, IPX and Linux, NetWare Server Emulation

dynamic routing, The Routing Table

E

eavesdropping programs, Methods of Attack

Echo Request/Echo Response messages, Link Control Options

echo service, The Services and Protocols Files

Ekwall, Bj⊘rn, Ethernet Installation

elm (electronic mail), Configuring elm

email, Electronic Mail

address formats, Email Addresses

aliases, Managing Mail Aliases, Alias Files

bang path notation, Obsolete Mail Formats

barring users from receiving, Barring users from receiving mail

batching, How Is Mail Delivered?

bounced, How Is Mail Delivered?

centralizing, Mixing UUCP and RFC-822

composing, How Is Mail Delivered?

default route, Mail Routing in the UUCP World

delivering, How Is Mail Delivered?

directing to a file, Delivering Messages to Local Addresses

domain-based routing, Mixing UUCP and RFC-822

elm, Configuring elm

Exim, Electronic Mail

feeding to a command, Delivering Messages to Local Addresses

forwarding, Forwarding, Alias Files

managing spam, Managing Unwanted or Unsolicited Mail (Spam), Protecting Against Mail Spam

map files, Mixing UUCP and RFC-822

maps, Mail Routing in the UUCP World

message body, What Is a Mail Message?

message format, What Is a Mail Message?

message headers, What Is a Mail Message?

multimedia, Electronic Mail

over UUCP, How Is Mail Delivered?

paths file, Mail Routing in the UUCP World

queue, Forcing a Remote Host to Process its Mail Queue, Getting Exim Up and Running, Mail Delivery Modes

routing, How Does Mail Routing Work?

between Internet and UUCP, Mail Routing on the Internet
smart host, Mail Routing in the UUCP World

sendmail, Electronic Mail

unsolicited, Managing Unwanted or Unsolicited Mail (Spam), Protecting Against Mail Spam

virtual hosting, Configuring Virtual Email Hosting

envelope, What Is a Mail Message?

environment variables

DISPLAY, Introduction to TCP/IP Networks
NNTPSERVER, tin Configuration
resolver, Resolver environment variables

Eriksson, Peter, The Network Information System

errors, checking for, Maintaining Your System

establishing the connection, Using chat to Automate Dialing

/etc/aliases file, Getting Acquainted with NIS, Alias Files

/etc/dip.pid file, A Sample Script

/etc/diphosts file, Running in Server Mode

/etc/exports file, The exports File

/etc/fstab file, Mounting the /proc Filesystem, Mounting an NFS Volume

/etc/group file, Getting Acquainted with NIS, Using the passwd and group Maps

/etc/host file, Resolver Robustness

/etc/host.conf file, Resolver Robustness

/etc/hosts file, Writing hosts and networks Files, The Network Information System, Getting Acquainted with NIS

/etc/hosts.allow file, The tcpd Access Control Facility

/etc/hosts.deny file, The tcpd Access Control Facility

/etc/inetd.conf file, Providing UUCP Accounts, Running Exim

/etc/named.boot file, Running named

/etc/networks file, Writing hosts and networks Files, Getting Acquainted with NIS

/etc/news/incoming.conf file (INN), The incoming.conf file, The incoming.conf file

/etc/nntpserver file, tin Configuration

/etc/nsswitch.conf file, Choosing the Right Maps

/etc/passwd file, PPP Server, The inetd Super Server, Getting Acquainted with NIS, Using the passwd and group Maps

real user names, Installation

/etc/ppp/chap-secrets file, PAP Versus CHAP, The CHAP Secrets File

/etc/ppp/options file, Using Options Files, General Security Considerations, PAP Versus CHAP

/etc/ppp/pap-secrets file, PAP Versus CHAP, The PAP Secrets File

/etc/protocols file, The Services and Protocols Files, Getting Acquainted with NIS

/etc/rpc file, Getting Acquainted with NIS

/etc/services file, The Services and Protocols Files, Getting Acquainted with NIS, Running Exim

/etc/shadow file, PPP Server, Using NIS with Shadow Support

/etc/ssh/ssh_config file, The ssh client

/etc/ssh/ssh_host_key file, The ssh daemon

/etc/ssh/ssh_host_key.pub file, The ssh daemon

/etc/yp.conf file, Setting Up an NIS Client with GNU libc, Setting Up an NIS Client with GNU libc

/etc/ypserv.securenets file, NIS Server Security

eth1 device, A Tour of Linux Network Devices

Ethernet

addresses, Ethernets, Address Resolution

versus IP address, The Internet Protocol

Becker drivers, Ethernet Installation

cards, Configuring the Networking Hardware

collisions, Ethernets

drawbacks, Ethernets

installation, Ethernet Installation, Ethernet Autoprobing

promiscuous mode, All About ifconfig

thick/thin, Ethernets

through parallel port, Ethernet Installation

twisted pair, Ethernets

exchanging

email, How Is Mail Delivered?
news, What Is Usenet, Anyway?

exclamation point (in email address), Obsolete Mail Formats

Exim, Electronic Mail

alias files, Alias Files

check mail queue, Mail Delivery Modes

compiling, Compiling Exim

configuration files, Getting Exim Up and Running

options, Miscellaneous config Options

daemon mode, Getting Exim Up and Running

delivering messages to local addresses, Delivering Messages to Local Addresses

directing mail to a file, Delivering Messages to Local Addresses

directors, Message Routing and Delivery

feeding mail to a command, Delivering Messages to Local Addresses

filter files, Forwarding

forwarding mail, Forwarding

log files, If Your Mail Doesn’t Get Through, Mail Delivery Modes

mail delivery modes, Mail Delivery Modes

mailing lists, Mailing Lists

queuing mail, Mail Delivery Modes

routers, Message Routing and Delivery

routing messages in, Routing Messages

running, Running Exim

symbolic links to, Getting Exim Up and Running

transports, Message Routing and Delivery

troubleshooting, If Your Mail Doesn’t Get Through

user mailboxes, Local users

utilities, Getting Exim Up and Running

UUCP setup, UUCP Setup

expect program, Using chat to Automate Dialing

expire.ctl file (INN), The expire.ctl file

exports file, The exports File

External Data Representation (XDR), Remote Procedure Call

F

FDDI (Fiber Distributed Data Interface), Other Types of Hardware, Other Network Types

FEATURE macro definition, FEATURE

FHS (File Hierarchy Standard), File System Standards

Fiber Distributed Data Interface (FDDI), Other Types of Hardware, Other Network Types

FidoNet, Communications Software for Modem Links

File System Standard, File System Standards

filter files, Forwarding

filtering

IP, What Is IP Filtering?
stages of, Three Ways We Can Do Filtering

finger daemon, The inetd Super Server

wrapping via tcpd, The tcpd Access Control Facility

fingerprints, Using ssh

firewalls, Dealing with Private IP Networks, What Is a Firewall?

IP chains, IP Firewall Chains (2.2 Kernels)

restoring/saving, The ipchains support scripts

methods of attack, Methods of Attack

netfilter, Netfilter and IP Tables (2.4 Kernels)

netmask specification, A naïve example

original IP, Original IP Firewall (2.0 Kernels)

sample configuration, A Sample Firewall Configuration

security, TCP/IP Firewall

TCP/IP, TCP/IP Firewall

testing a configuration, Testing a Firewall Configuration

TOS bit manipulation, TOS Bit Manipulation

user-defined chains, User-defined chains, User-defined chains

warning, TCP/IP Firewall

flooding algorithm, How Does Usenet Handle News?

.forward file, Delivering Messages to Local Addresses

forwardfile director, Mailing Lists

forwarding

IP, The Internet Protocol, Kernel Networking Options in Linux 2.0.0 and Higher
mail, Forwarding, Alias Files

FRAD (Frame Relay Access Device), Other Types of Hardware

fragmentation, datagram, Accounting by Service Port

Frampton, Steve, Sources of Information

FSSTND (File System Standard), File System Standards

FTP (File Transfer Protocol), location of Linux code, Where to Get the Code

full user names, Installation

G

gated command, The Routing Table, The PLIP Interface, Routing Through a PPP Link

gateways, The Internet Protocol, Gateways

configuring, Configuring a Gateway
email, Mail Routing on the Internet
routing networks through, Routing Through a Gateway

get command, The get command

gethostbyaddr(), Resolving Host Names, The Resolver Library, Choosing the Right Maps

gethostbyname(), The Resolver Library, Choosing the Right Maps

uucico and, The Inner Workings of uucico

getpwnam(), The Client Side of NIS

getpwuid(), The Client Side of NIS

getservbyname(), Choosing the Right Maps

glue records, The DNS Database

GNU Free Documentation License (FDL), Linux Network Administrator’s Guide, Second Edition Copyright Information

GNU libc (NIS support), The Network Information System, Using NIS with Shadow Support

Goldt, Sven, Sources of Information

GPG (GNU Privacy Guard), The control.ctl file

Groucho Marx University (GMU), Introduction to TCP/IP Networks, Subnetworks

group command (NNTP), Selecting a Group on Which to Operate

H

ham radio, Other Types of Hardware, Address Resolution

handshake, hardware, Serial Hardware, The stty Command, Running pppd

Hankins, Greg, Configuring the Serial Hardware

hardware

handshake, Serial Hardware, The stty Command, Running pppd

Harper, John D., Sources of Information

Hazel, Philip, About This Book, Electronic Mail

HDLC (High-Level Data Link Control) protocol, The Point-to-Point Protocol

head command (NNTP), Retrieving an Article Header Only

help, online, Online Linux Support

Hesiod addresses, The DNS Database

host keys, The ssh daemon

host.conf file, The host.conf File, The Network Information System

hostat command, hoststat

hostcvt program, Other Useful Tools

hostname

aliases, The DNS Database Files
ambiguous, Mail Routing in the UUCP World
canonical, The DNS Database, The DNS Database Files
domain name and, How DNS Works
fully qualified, How DNS Works
mapping to addresses, Resolving Host Names
resolution, Resolving Host Names, Writing hosts and networks Files, The Network Information System
setting, Setting the Hostname
UUCP, Site Naming

hosts, History

standalone, The Dummy Interface
virtual, IP Alias

hosts file, Writing hosts and networks Files

converting to BIND master files, Other Useful Tools

hosts.byaddr file, Getting Acquainted with NIS

hosts.byname file, Getting Acquainted with NIS

HOWTOs, Sources of Information

AX25, Other Types of Hardware, Kernel Networking Options in Linux 2.0.0 and Higher
electronic mail, Electronic Mail
IPCHAINS, IP Firewall Chains (2.2 Kernels)
IPTABLES, More About Network Address Translation
IPX, NetWare Server Emulation
Networking, Kernel Networking Options in Linux 2.0.0 and Higher
PACKET-FILTERING, Netfilter and IP Tables (2.4 Kernels)
PPP, PPP on Linux
Serial, Configuring the Serial Hardware
UUCP, Managing Taylor UUCP

hybrid addresses, Mixing Different Mail Formats

I

IBM Token Ring networks, Other Types of Hardware

ICMP (Internet Control Message Protocol)

datagram accounting, Accounting of ICMP Datagrams
datagram types, ICMP datagram types
Port Unreachable message, The Internet Control Message Protocol
Redirect message, The Internet Control Message Protocol

IETF (Internet Engineering Task Force), More on Ports

ifconfig command, Interface Configuration for IP, Ethernet Interfaces, All About ifconfig, SLIP Operation, Passive Collection of Accounting Data

ihave command (NNTP), NNTP and the nntpd Daemon, Pushing a News Article onto a Server, nntpd Interaction with C News

ihave/sendme protocol (news), How Does Usenet Handle News?

in-addr.arpa domain, Reverse Lookups

incoming.conf file (INN), The incoming.conf file, The incoming.conf file

inetd super server, The inetd Super Server, The inetd Super Server, Remote Procedure Call

running Exim under, Running Exim

inetd.conf file, The inetd Super Server, The inetd Super Server

inews command, Delivering News

information on Linux, Sources of Information

initializing networking, Configuring TCP/IP Networking

INN (Internet News), Usenet History

configuration files, INN Configuration Files

configuring

newsfeeds, Configuring Newsfeeds
newsgroups, Configuring Newsgroups

control messages, handling, Handling Control Messages

expiring news articles, Expiring News Articles

global parameters, Global Parameters

ihave protocol, Some INN Internals

installing, Installing INN

managing, Managing INN: The ctlinnd Command

newsreaders, Newsreaders and INN

controlling access, Controlling Newsreader Access

NNTP and, NNTP and the nntpd Daemon, Some INN Internals

rnews, Some INN Internals

running, Running INN

inn source package, Running INN

inn.conf file (INN), The inn.conf file

innd command (INN), Some INN Internals

innxmit command (INN), Some INN Internals, The nntpsend.ctl file

installing

INN (Internet News), Installing INN
network binaries, Installing the Binaries
sendmail, Installing sendmail

interfaces, Networking Interfaces, Configuring the Networking Hardware, A Tour of Linux Network Devices

AX.25, A Tour of Linux Network Devices
configuration of, Interface Configuration for IP
configuring IPX, Configuring IPX Interfaces
Ethernet, A Tour of Linux Network Devices
loopback, A Tour of Linux Network Devices
netmask, Subnetworks, Creating Subnets, All About ifconfig
PLIP, A Tour of Linux Network Devices
PPP, A Tour of Linux Network Devices, Running pppd
SLIP, A Tour of Linux Network Devices
Token Ring, A Tour of Linux Network Devices

Internet, Introduction to TCP/IP Networks

connecting to, The Point-to-Point Protocol, Running pppd
daemon, The inetd Super Server
versus internetworking, The Internet Protocol

Internet Datagram Protocol (IDP), Xerox, Novell, and History

internetworking, The Internet Protocol

IP (Internet Protocol), The Internet Protocol

addresses, The Internet Protocol, IP Addresses

assigning, Assigning IP Addresses
hostname and, Resolving Host Names
negotiation in PPP, Running pppd, Choosing IP Addresses, The CHAP Secrets File
private, Assigning IP Addresses
versus hostname, The Internet Protocol

aliasing, Kernel Networking Options in Linux 2.0.0 and Higher

broadcast address, Ethernet Interfaces, All About ifconfig

default route, IP Addresses, Routing Through a Gateway

dialup, The Point-to-Point Protocol

dynamic routing, The Routing Table

filtering, What Is IP Filtering?

Firewall Chains, IP Firewall Chains (2.2 Kernels)

forwarding, The Internet Protocol, Kernel Networking Options in Linux 2.0.0 and Higher

gateways, The Internet Protocol

interface, Configuring the Networking Hardware

configuration, Interface Configuration for IP

IPv4, The Internet Protocol

IPv6, Different Streaks of Development

masquerade, IP Masquerade and Network Address Translation

metric, All About ifconfig

MTU, Kernel Networking Options in Linux 2.0.0 and Higher

multicast addresses, All About ifconfig

netmask, Subnetworks, Creating Subnets, All About ifconfig

Network Control Protocol (PPP), The Point-to-Point Protocol

networks, IP Networks

private addresses, IP Addresses

routing, The Internet Protocol, IP Routing, Kernel Networking Options in Linux 2.0.0 and Higher

effect of netmask, The Routing Table
protocols, The Routing Table
Redirect message (ICMP), The Internet Control Message Protocol
table, Ethernet Interfaces

serial line, The Point-to-Point Protocol

source routing, Kernel Networking Options in Linux 2.0.0 and Higher

subnets, Kernel Networking Options in Linux 2.0.0 and Higher, Reverse Lookups

TOS (Type Of Service) bits, TOS Bit Manipulation

IP accounting, Kernel Networking Options in Linux 2.0.0 and Higher

by address, Accounting by Address
configuring, Configuring IP Accounting
flushing the rules, Flushing the Ruleset
of ICMP datagrams, Accounting of ICMP Datagrams
kernel configuration, Configuring the Kernel for IP Accounting
passive collection, Passive Collection of Accounting Data
by protocol, Accounting by Protocol
resetting the counters, Resetting the Counters
by service port, Accounting by Service Port
using results of, Using IP Accounting Results

ipchains command, The ipchains Utility, Using ipchains

configuring IP accounting, Configuring IP Accounting
configuring IP masquerade, Configuring IP Masquerade, Setting Timing Parameters for IP Masquerade
firewall options, ipchains Command Syntax
listing accounting data with, Listing Accounting Data with ipchains
listing rules with, Listing Our Rules with ipchains
setting the TOS bits, Setting the TOS Bits Using ipfwadm or ipchains
support scripts, The ipchains support scripts

IPCHAINS-HOWTO, IP Firewall Chains (2.2 Kernels)

ipchains-restore command, The ipchains support scripts

ipchains-save command, The ipchains support scripts

IPCP (Internet Protocol Control Protocol), The Point-to-Point Protocol, IP Configuration Options

ipfwadm command, The ipfwadm Utility, Original IP Firewall (2.0 Kernels)

configuring IP accounting, Configuring IP Accounting
configuring IP masquerade, Configuring IP Masquerade, Setting Timing Parameters for IP Masquerade
firewall options, Summary of ipfwadm Arguments
listing accounting data with, Listing Accounting Data with ipfwadm
listing rules with, Listing our rules
setting the TOS bits, Setting the TOS Bits Using ipfwadm or ipchains

ipfwadm-wrapper command, The ipchains Utility, Using ipchains, The ipchains support scripts

iptables command, The iptables Utility

configuring IP accounting, Configuring IP Accounting
configuring IP masquerade, Configuring IP Masquerade, More About Network Address Translation
extensions, Extensions
firewall options, Using iptables
listing accounting data with, Listing Accounting Data with iptables
setting the TOS bits, Setting the TOS Bits Using iptables

IPTABLES-HOWTO, More About Network Address Translation

IPv4 (Internet Protocol), The Internet Protocol

IPv6 (Internet Protocol), Different Streaks of Development

IPX (Internet Packet eXchange), The Socket Library

interface configuration tools, IPX Interface Configuration Tools

internal networks, Internal IPX Networks and Routing

kernel configuration, Configuring the Kernel for IPX and NCPFS

PPP network protocol, Kernel Options in Linux 2.0 and Higher

routing, Kernel Networking Options in Linux 2.0.0 and Higher, Configuring an IPX Router

tools

nsend, Send Messages to NetWare Users
pqlist, Managing Print Queues
slist, Server List

IPX-HOWTO, NetWare Server Emulation

ipxd command, Configuring an IPX Router

ipx_configure command, The ipx_configure Command

ipx_interface command, The ipx_interface Command

ipx_route command, Static IPX Routing Using the ipx_route Command

IRC Network, OpenProjects, Online Linux Support

IRQ (Interrupt Request), Configuring the Networking Hardware, Ethernet Autoprobing

setting, All About ifconfig

irtt parameter, Displaying the Routing Table

J

jobs (UUCP), UUCP Transfers and Remote Execution
junk newsgroup, Delivering News

K

Kempen, Fred van, Linux Networking

kermit (terminal program), Communications Software for Modem Links

kernel version numbering, Kernel Configuration

kernels

configuration, Kernel Configuration, Kernel Networking Options in Linux 2.0.0 and Higher
configured with IP firewall, Setting Up Linux for Firewalling
configuring for IPX and NCPFS, Configuring the Kernel for IPX and NCPFS
configuring for masquerade, Configuring the Kernel for IP Masquerade
NFSv2/NFSv3 server support, Kernel-Based NFSv2 Server Support

key fingerprints, Using ssh

keys

host, The ssh daemon
private, The ssh daemon, The ssh client
public, The ssh daemon, The ssh client

Kirch, Olaf, The Network File System, Kernel-Based NFSv2 Server Support

Kukuk, Thorsten, The Network Information System

L

Lapsley, Phil, NNTP and the nntpd Daemon

LCP (Link Control Protocol), The Point-to-Point Protocol

echo messages, Link Control Options
options, Link Control Options, Link Control Options

LDP (Linux Documentation Project), Sources of Information

leaf sites, Mail Routing in the UUCP World

leafnode (NNTP cache program), Reading an Article from a Group

Learning Debian GNU/Linux, Documentation Available Commercially

Learning Red Hat Linux, Documentation Available Commercially

Lendecke, Volker, IPX and Linux

libc6 (NIS support), The Network Information System, Using NIS with Shadow Support

Libes, Don, Using chat to Automate Dialing

lilo command, Ethernet Autoprobing

line discipline, Introduction to Serial Devices, SLIP Operation, PPP on Linux

Linux

documentation, Documentation Available via FTP

HOWTOs, Sources of Information

networks, Linux Networking

obtaining code for, Obtaining Linux, Where to Get the Code

sources of information on, Sources of Information

Linux distributions, Obtaining Linux

standard base, Standard Linux Base

Linux Documentation Project, Sources of Information

Linux in a Nutshell, Documentation Available Commercially

Linux kernel

version numbering of, Kernel Configuration

Linux Magazine, Linux Journal and Linux Magazine

Linux Standard Base (LSB), Standard Linux Base

Linux User Groups (LUG), Linux User Groups

list active command (NNTP), Listing Active Groups

list command (NNTP), Listing Available Groups

listen(), The Socket Library

listgroup command (NNTP), Listing Articles in a Group

lo (loopback interface), The Loopback Interface

local addresses, Delivering Messages to Local Addresses

Local Area Networks (LANs), TCP/IP Networks

connecting, Routing Through a PPP Link
hardware for, Ethernets
news, C News in an NFS Environment
passwords, Using the passwd and group Maps
remote login, Configuring Remote Login and Execution

local macro definitions, Local macro definitions

localgroups file (/etc/news), Miscellaneous Files

localhost (dummy hostname), The Loopback Interface

local_domains configuration variable, Routing Messages

LOCAL_NET_CONFIG macro definition, Configure mail routing for local hosts, Ruleset Semantics

LOCAL_RULE_0 sendmail ruleset, Ruleset Semantics

LOCAL_RULE_1 sendmail ruleset, Ruleset Semantics

LOCAL_RULE_2 sendmail ruleset, Ruleset Semantics

LOCAL_RULE_3 sendmail ruleset, Ruleset Semantics

lock files and PPP, Using Options Files

Log file (UUCP), Log Files and Debugging

log files, debugging, Log Files and Debugging

login command and NIS maps, Using the passwd and group Maps

loopback

address, IP Addresses
interface device, A Tour of Linux Network Devices

lpd (line printer daemon), Using nprint with the Line Printer Daemon

LSB (Linux Standard Base), Standard Linux Base

Lu, H.J., Kernel-Based NFSv2 Server Support

LUG (Linux User Groups), Linux User Groups

M

m4 macro processor, The sendmail.cf and sendmail.mc Files

configuring sendmail options, Configuring sendmail Options

macro definitions, sendmail.mc file, Typically Used sendmail.mc Parameters

Mail Abuse Protection System (MAPS), Protecting Against Mail Spam

mail spool, managing, Managing the Mail Spool

mail transport agent (MTA), How Is Mail Delivered?

mail user agent (MUA), How Is Mail Delivered?

mailbox files, Local users

MAILER macro definition, Defining mail transport protocols

mailing lists, Linux Mailing Lists

in Exim, Mailing Lists

mailpaths file (/etc/news), Miscellaneous Files

mailstats command, mailstats

maintenance, system, Maintaining Your System

makedbm program, Running an NIS Server

manual configuration

Ethernet, Ethernet Autoprobing
PLIP, The PLIP Driver

maps, Usenet, Mail Routing in the UUCP World, Mixing UUCP and RFC-822

Marx, Groucho, Introduction to TCP/IP Networks

masquerade

configuration, Configuring IP Masquerade
how it works, IP Masquerade and Network Address Translation
kernel configuration, Configuring the Kernel for IP Masquerade
listing rules, Configuring IP Masquerade
name server lookups, Handling Name Server Lookups
setting timing parameters for, Setting Timing Parameters for IP Masquerade
side effects of, Side Effects and Fringe Benefits

master servers, Getting Acquainted with NIS, Running an NIS Server

Maximum Receive Unit (MRU), Link Control Options

Maximum Transfer Unit (MTU), Networking Interfaces, Link Control Options

Maximum Transmission Unit (MTU), All About ifconfig

IP, Kernel Networking Options in Linux 2.0.0 and Higher

Meer, Sven van der, Sources of Information

messages, email, What Is a Mail Message?

metric values (for routing table entries), Metric Values

mgetty program, Providing UUCP Accounts

Middelink, Pauline, Original IP Firewall (2.0 Kernels)

MIME (Multipurpose Internet Mail Extensions), What Is a Mail Message?

format, National Character Sets

minicom (terminal program), Communications Software for Modem Links

modems

demand dialing, Demand Dialing

links

communication software for, Communications Software for Modem Links
configuring via dip, The modem commands

persistent dialing, Persistent Dialing

Morris, G. Allan, Kernel-Based NFSv2 Server Support

mount command, The Network File System

mountd daemon, The exports File

mounting

an NFS volume, Mounting an NFS Volume
the proc filesystem, Mounting the /proc Filesystem

MRU (Maximum Receive Unit), Link Control Options

mthreads program, trn Configuration

multimedia mail, Electronic Mail

MX (DNS record), The DNS Database Files

Myklebust, Trond, Kernel-Based NFSv2 Server Support

N

name lookups

via DNS, Name Lookups with DNS

name servers, Name Lookups with DNS

authoritative, Types of Name Servers, The DNS Database, Reverse Lookups
cache, The named.boot File
caching-only, Types of Name Servers, Running pppd
configuring, Running named, Other Useful Tools
for IP masquerade, Handling Name Server Lookups
lookups, Configuring Name Server Lookups Using resolv.conf
primary, Types of Name Servers, The named.boot File
root, Writing the Master Files, Verifying the Name Server Setup
secondary, Types of Name Servers, The named.boot File
slave, The named.boot File
synchronizing, Types of Name Servers

name service configuration, Name Service and Resolver Configuration, Other Useful Tools

named.boot file, The named.boot File

named.conf file, The BIND 8 host.conf File

named program, Name Service and Resolver Configuration, Running named, Other Useful Tools

named-bootconf.pl command, The BIND 8 host.conf File

namespace (DNS), How DNS Works

NAT (Network Address Translation), IP Masquerade and Network Address Translation, More About Network Address Translation

NCP (Network Control Protocol), The Point-to-Point Protocol

NCPFS (NetWare Core Protocol Filesystem), IPX and the NCP Filesystem

kernel configuration, Configuring the Kernel for IPX and NCPFS
mounting volume on, Mounting a Remote NetWare Volume
~/.nwclient file, A More Complex ncpmount Example
server emulation, NetWare Server Emulation

ncpmount command

command-line arguments, The ncpmount Command in Detail
complex example, A More Complex ncpmount Example
simple example, A Simple ncpmount Example

NCSA telnet, The PLIP Driver

Net-1 network version, Linux Networking

Net-2d network version, Linux Networking

Net-2Debugged network version, Linux Networking

Net-2e network version, Different Streaks of Development

Net-3 network version, Linux Networking, Where to Get the Code

Net-4 network version, Linux Networking

netfilter

IP tables and, Netfilter and IP Tables (2.4 Kernels)
kernel modules, Backward Compatability with ipfwadm and ipchains

NetRom protocol, Other Types of Hardware, The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher

netstat command, Ethernet Interfaces, The netstat Command, Displaying Connections

displaying connections, Displaying Connections

NetWare, IPX and the NCP Filesystem

print queue, printing to, Printing to a NetWare Print Queue

NetWare Core Protocol (NCP), Xerox, Novell, and History

NetWare Directory Service (NDS), More on NDS Support

Network Unreachable error message, The Loopback Interface

Networking HOWTO, Kernel Networking Options in Linux 2.0.0 and Higher

networks, A Tour of Linux Network Devices

ARPANET, Introduction to TCP/IP Networks
booting, Configuring TCP/IP Networking
corporate, Introduction to TCP/IP Networks
Ethernet, Ethernets, Other Network Types, Ethernet Installation
initialization scripts, The Loopback Interface
interconnecting, The Internet Protocol
Internet, Introduction to TCP/IP Networks
introduction to, History, System Security
IP address, Assigning IP Addresses
Linux, Linux Networking
Local Area, TCP/IP Networks
names of, Writing hosts and networks Files
packet-switched, TCP/IP Networks
passwords, Using the passwd and group Maps
ports, The Transmission Control Protocol, More on Ports
private, Dealing with Private IP Networks
programming interfaces, The Socket Library
protocols, History
services, More on Ports
TCP/IP, TCP/IP Networks, Issues of TCP/IP Networking
thinnet, Ethernets
Token Ring, Other Types of Hardware
unreachable, The Loopback Interface
UUCP, UUCP Networks

networks file, Writing hosts and networks Files

Neuling, Michael, IP Firewall Chains (2.2 Kernels)

newgroup control message, newgroup and rmgroup

newnews command (NNTP), NNTP and the nntpd Daemon, Listing New Articles

news (network), Usenet History

active file, How Does Usenet Handle News?, Delivering News

adding new groups, newgroup and rmgroup

archiving articles, Expiring News

articles, What Is Usenet, Anyway?

batching, Article Batching
expiring, Expiring News Articles
listing, Listing New Articles
posting, Posting an Article
pushing news, Pushing a News Article onto a Server
retrieving headers/message body, Retrieving an Article Header Only

batching, How Does Usenet Handle News?, Delivering News

cancel article, The cancel Message

control messages, Control Messages

deleting old news, How Does Usenet Handle News?

distribution, How Does Usenet Handle News?, The sys File

exchanging, What Is Usenet, Anyway?, How Does Usenet Handle News?

expiration of, How Does Usenet Handle News?, Expiring News, trn Configuration, nn Configuration

faking, NNTP and the nntpd Daemon

feeding, What Is Usenet, Anyway?, How Does Usenet Handle News?, How Does Usenet Handle News?

flooding algorithm, How Does Usenet Handle News?

follow-up, Newsreader Configuration

groups, What Is Usenet, Anyway?

history, How Does Usenet Handle News?, Delivering News

ihave/sendme, How Does Usenet Handle News?

Internet News, Usenet History

limiting a feed, How Does Usenet Handle News?

message IDs, How Does Usenet Handle News?, Delivering News

newsmaster, Installation

NNTP, Usenet History, How Does Usenet Handle News?

pulling, How Does Usenet Handle News?, NNTP and the nntpd Daemon

pushing, How Does Usenet Handle News?, NNTP and the nntpd Daemon

receiving, The sys File

removing old groups, newgroup and rmgroup

spool, How Does Usenet Handle News?

updating active files, The checkgroups Message

Usenet, What Is Usenet, Anyway?

news faking, NNTP and the nntpd Daemon

news feeds, How Does Usenet Handle News?

newsfeeds file (INN), Some INN Internals, The newsfeeds file, The newsfeeds file

newsfeeds, configuring, Configuring Newsfeeds

newsgroups, What Is Usenet, Anyway?

comp.mail.uucp, Managing Taylor UUCP
comp.protocols.ppp, PPP on Linux
comp.protocols.tcp-ip.domains, Name Service and Resolver Configuration
configuring, Configuring Newsgroups
creating, newgroup and rmgroup
deleting, newgroup and rmgroup
file (/etc/news), Miscellaneous Files
listing, Listing Available Groups
listing articles, Listing Articles in a Group
selecting, Selecting a Group on Which to Operate
Usenet, LinuxUsenet Newsgroups

newsgroups file (INN), The active and newsgroups files

newsmaster, Installation

newsreaders

changing to NNRP reader mode, Changing to NNRP Reader Mode
controlling access, Controlling Newsreader Access
creating thread databases, trn Configuration, nn Configuration
INN (Internet News) and, Newsreaders and INN
nn, nn Configuration
tass, tin Configuration
threading, Newsreader Configuration
tin, tin Configuration
trn, trn Configuration

newsrun command, Delivering News

NFS (Network File System), The Network File System

C News in, C News in an NFS Environment
daemons, The NFS Daemons
exporting a volume, The exports File
exports file, The exports File
hard-mounting versus soft-mounting, Mounting an NFS Volume
kernel-based server support, Kernel-Based NFSv2 Server Support
matching uids and gids, The NFS Daemons, The exports File
mounting volume on, The Network File System, Mounting an NFS Volume
restricting block size, Mounting an NFS Volume
timeout, Mounting an NFS Volume
via TCP/IP, Introduction to TCP/IP Networks

nfsd daemon, The Network File System

NFSv2/NFSv3 server support, Kernel-Based NFSv2 Server Support

NIS (Network Information System)

clients, The Client Side of NIS, Setting Up an NIS Client with GNU libc
creating maps, Running an NIS Server
databases, Getting Acquainted with NIS
domains, Getting Acquainted with NIS, Setting Up an NIS Client with GNU libc
GNU libc, The Network Information System, Setting Up an NIS Client with GNU libc
locating servers, Getting Acquainted with NIS
maps, Getting Acquainted with NIS, Running an NIS Server
nicknames, Getting Acquainted with NIS
passwd maps, Using the passwd and group Maps
resolver and, The host.conf File, The nsswitch.conf File
securenets option, NIS Server Security
security, Getting Acquainted with NIS, NIS Server Security
servers, Getting Acquainted with NIS
shadow passwords and, Using NIS with Shadow Support

NIS+, NIS Versus NIS+

nn newsreader, configuration, nn Configuration

nnrp.access file (INN), The nnrp.access file

nnrpd command (INN), Newsreaders and INN, The nnrp.access file

NNTP (Network News Transfer Protocol), Usenet History, NNTP and the nntpd Daemon

article command, Reading an Article from a Group
authorization, NNTP Authorization
body command, Retrieving an Article Body Only
C News and, nntpd Interaction with C News
changing to NNRP reader mode, Changing to NNRP Reader Mode
connecting to a news server, Connecting to the News Server
group command, Selecting a Group on Which to Operate
head command, Retrieving an Article Header Only
ihave command, NNTP and the nntpd Daemon, Pushing a News Article onto a Server, nntpd Interaction with C News
INN (Internet News) and, Some INN Internals
leafnode, Reading an Article from a Group
list active command, Listing Active Groups
list command, Listing Available Groups
listgroup command, Listing Articles in a Group
listing groups, Listing Available Groups
newnews command, NNTP and the nntpd Daemon, Listing New Articles
post command, Posting an Article
restricting access in, Restricting NNTP Access, NNTP Authorization

nntpd, Usenet History

components, NNTP and the nntpd Daemon
installing the server, Installing the NNTP Server

nntpsend.ctl file (INN), The nntpsend.ctl file

NNTPSERVER environment variables, tin Configuration

nntp_access file, Restricting NNTP Access

Noorda, Ray, Caldera Support

Novell Corporation, IPX and the NCP Filesystem

nprint command, Printing to a NetWare Print Queue

using lpd (line printer daemon), Using nprint with the Line Printer Daemon

nsend command, Send Messages to NetWare Users

nslint program, Other Useful Tools

nsswitch.conf file, The nsswitch.conf File

action statements, The nsswitch.conf File

NYS, The Network Information System

O

octets, IP Addresses
Oja, Joanna, Sources of Information
online help, Online Linux Support
Open Source Writers Guild, Documentation Available via WWW
OpenProjects IRC network, Online Linux Support
OSPF (Open Shortest Path First) protocol, Kernel Networking Options in Linux 2.0.0 and Higher
OSTYPE macro definition, VERSIONID and OSTYPE
OSWG (Open Source Writers Guild), Documentation Available via WWW

P

packet radio, Other Types of Hardware

PACKET-FILTERING-HOWTO, Netfilter and IP Tables (2.4 Kernels)

packet-switched networks, TCP/IP Networks

PAD (Packet Assembler Disassembler), Other Types of Hardware

Page, Greg, IPX and Linux

PAP (Password Authentication Protocol), The Point-to-Point Protocol, Authentication with PPP

parallel port

Ethernet, Ethernet Installation
IP, The PLIP Driver

passwords

hiding NetWare, Hiding Your NetWare Login Password
network-wide, Using the passwd and group Maps
remote login and, Configuring Remote Login and Execution

pathalias command, Mixing UUCP and RFC-822

pathalias database, Mail Routing in the UUCP World

paths file, Mail Routing in the UUCP World

PC/TCP compatibility, Kernel Networking Options in Linux 2.0.0 and Higher

percent sign (in email address), Mixing Different Mail Formats

persistent dialing, Persistent Dialing

PGP (Pretty Good Privacy), The control.ctl file

ping command, The Loopback Interface

ping flooding, Accounting of ICMP Datagrams

PLIP (Parallel Line IP) protocol

driver, The PLIP Driver, The PPP and SLIP Drivers
interface, The PLIP Interface
null printer cable for, A PLIP Parallel Cable
routing, Checking the ARP Tables

plip1 device, A Tour of Linux Network Devices

plipconfig command, The PLIP Interface

point-to-point link, All About ifconfig, Checking the ARP Tables, The Point-to-Point Protocol

Pomerantz, Ori, Sources of Information

portmap daemon, Remote Procedure Call

portmapper daemon, Remote Procedure Call

ports, The Transmission Control Protocol, More on Ports

COM, The Serial Device Special Files

post command (NNTP), Posting an Article

PPP (Point-to-Point Protocol), IP Over Serial Lines, Communications Software for Modem Links, The SLIP and PPP Interfaces, General Requirements, The Point-to-Point Protocol

advanced configurations, More Advanced PPP Configurations
async map, Link Control Options
authentication, Authentication with PPP, The PAP Secrets File
carrying IPX, Kernel Options in Linux 2.0 and Higher
chat script, Using chat to Automate Dialing, Using chat to Automate Dialing
compressing data, The Point-to-Point Protocol, Link Control Options
configuring demand dialing for, Demand Dialing
configuring persistent dialing for, Persistent Dialing
configuring server in, PPP Server
daemon, PPP on Linux
debugging setup of, Debugging Your PPP Setup
default route, Running pppd
driver, PPP on Linux
dynamic address assignment, Choosing IP Addresses
escaping control characters, Link Control Options
IP addresses, Running pppd, Choosing IP Addresses
lock files, Using Options Files
Maximum Receive Unit, Link Control Options
null modem cable for, A Serial NULL Modem Cable
option files, Using Options Files
proxy ARP, Routing Through a PPP Link
routing, Checking the ARP Tables, Routing Through a PPP Link, Routing Through a PPP Link
secrets files, The CHAP Secrets File, The PAP Secrets File
security, General Security Considerations
using CHAP, Authentication with PPP, The CHAP Secrets File
using PAP, Authentication with PPP, The PAP Secrets File

PPP-HOWTO, PPP on Linux

ppp1 device, A Tour of Linux Network Devices

pppd (kernel PPP module), PPP on Linux, Running pppd, General Security Considerations

.ppprc file, Using Options Files

pqlist command, Managing Print Queues

pqstat command, Managing Print Queues

primary option (BIND), The named.boot File

print command, The print command

print queues, NetWare, Printing to a NetWare Print Queue

private IP addresses, Assigning IP Addresses

private keys, The ssh daemon, The ssh client

proc filesystem, mounting, Mounting the /proc Filesystem

/proc/filesystems file, Preparing NFS

/proc/kmsg file, Debugging Your PPP Setup

/proc/net file, Mounting the /proc Filesystem

/proc/net/ipx_route file, Static IPX Routing Using the ipx_route Command

protocol numbers, The Services and Protocols Files

protocols, History

ATM (Asynchronous Transfer Mode), Other Types of Hardware, The Socket Library
AX.25, Other Types of Hardware, The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher, A Tour of Linux Network Devices
CSLIP, IP Over Serial Lines
Ethernet, Ethernets
Frame Relay, Other Types of Hardware
ICMP, The Internet Control Message Protocol
Internet (IP), The Internet Protocol
Internet Datagram Protocol (IDP), Xerox, Novell, and History
Internet Packet eXchange (IPX), The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher
mapping XNS, Novell, and TCP/IP, Xerox, Novell, and History
NetRom, Other Types of Hardware, The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher
NetWare Core Protocol (NCP), Xerox, Novell, and History
OSPF, Kernel Networking Options in Linux 2.0.0 and Higher
PLIP, The PLIP Driver
PPP, IP Over Serial Lines, Communications Software for Modem Links
Rose, Other Types of Hardware, The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher
Routing Information Protocol (RIP), Kernel Networking Options in Linux 2.0.0 and Higher, Configuring an IPX Router
Sequenced Packet eXchange (SPX), Xerox, Novell, and History
Sequenced Packet Protocol (SPP), Xerox, Novell, and History
Service Advertisement Protocol (SAP), Xerox, Novell, and History, Configuring an IPX Router
SLIP, IP Over Serial Lines, Communications Software for Modem Links, SLIP Operation
SMTP, How Is Mail Delivered?
TCP, The Transmission Control Protocol
token-passing, Other Types of Hardware
UDP, The User Datagram Protocol
UUCP, Protocol Overview
X.25, Other Types of Hardware, The Socket Library
XNS, The Socket Library

protocols file, The Services and Protocols Files

proxy ARP, The PLIP Interface, Checking the ARP Tables, Routing Through a PPP Link

PTR (DNS record), The DNS Database Files

public keys, The ssh daemon, The ssh client

pulling news, NNTP and the nntpd Daemon

pushing news, NNTP and the nntpd Daemon, Pushing a News Article onto a Server

Q

queuing mail, Mail Delivery Modes

R

RARP (Reverse Address Resolution Protocol), Address Resolution, Kernel Networking Options in Linux 2.0.0 and Higher

rc script, Configuring TCP/IP Networking

rcp command, Configuring Remote Login and Execution

reaching a host, The Loopback Interface

real user names, Installation

Real-time Blackhole List (RBL), The Real-time Blackhole List, Protecting Against Mail Spam

receiving news, The sys File

RedHat (Linux distribution), Obtaining Linux

relaynews command, Delivering News

remote

command execution, Configuring Remote Login and Execution

execution, How Is Mail Delivered?

file access, Configuring Remote Login and Execution

filesystem, Mounting an NFS Volume

login, Introduction to TCP/IP Networks, The Transmission Control Protocol, Configuring Remote Login and Execution

via TCP/IP, Introduction to TCP/IP Networks
X Windows session, Introduction to TCP/IP Networks

repeaters, Ethernets

resolv.conf file, Caching-only named Configuration

resolvers

environment variables, Resolver environment variables
library, The Resolver Library
robustness, Resolver Robustness

RESOLV_ADD_TRIM_DOMAINS environment variable, Resolver environment variables

RESOLV_HOST_CONF environment variable, Resolver environment variables

RESOLV_MULTI environment variable, Resolver environment variables

RESOLV_OVERRIDE_TRIM_DOMAINS environment variable, Resolver environment variables

RESOLV_SERV_ORDER environment variable, Resolver environment variables

RESOLV_SPOOF_CHECK environment variable, Resolver environment variables

resource record (RR), The DNS Database Files

restricting access to services, The tcpd Access Control Facility

rewrite rules (sendmail), Interpreting and Writing Rewrite Rules

RFC-1036, The control.ctl file

RFC-1123, Mail Routing on the Internet

RFC-1341, What Is a Mail Message?

RFC-1700, ICMP datagram types

RFC-793, TCP Extensions: used with -m tcp -p tcp

RFC-821, How Is Mail Delivered?, Mail Routing on the Internet

RFC-822, Electronic Mail, What Is a Mail Message?, RFC-822, Obsolete Mail Formats

names, Mixing UUCP and RFC-822

RFC-974, Mail Routing on the Internet

RIP (Routing Information Protocol), The Routing Table, Kernel Networking Options in Linux 2.0.0 and Higher, The PLIP Interface, All About ifconfig

rlogin command, Configuring Remote Login and Execution

rmail command, Command Execution

rmgroup control message, newgroup and rmgroup

rnews command, Command Execution, Delivering News, Article Batching

root domain, How DNS Works

Rose protocol, Other Types of Hardware, The Socket Library, Kernel Networking Options in Linux 2.0.0 and Higher

round-trip time (IP), The Loopback Interface

route command, Interface Configuration for IP, Ethernet Interfaces, The PLIP Interface, SLIP Operation

route, default, IP Addresses, Routing Through a Gateway, Running pppd

routed command, The Routing Table

routers, Ethernets

routing

daemon, The Routing Table
dynamic, The Routing Table, The Internet Control Message Protocol, The PLIP Interface, Checking the ARP Tables, Routing Through a PPP Link
ICMP Redirect, The Internet Control Message Protocol
IP, IP Routing
IPX (Internet Packet eXchange), Configuring an IPX Router
metric, All About ifconfig
over PPP, Routing Through a PPP Link
protocols, The Routing Table
proxy ARP, Checking the ARP Tables
smart host, Mail Routing in the UUCP World

Routing Information Protocol (RIP), The Routing Table, Kernel Networking Options in Linux 2.0.0 and Higher, The PLIP Interface, All About ifconfig, Configuring an IPX Router

routing table, The Routing Table

displaying via netstat, Displaying the Routing Table

RPC (Remote Procedure Call), Remote Procedure Call

mapping ports to programs, Remote Procedure Call
program numbers, Remote Procedure Call

rpc file, Remote Procedure Call

rpc.mountd daemon, The NFS Daemons

rpc.nfsd daemon, The Network File System, The NFS Daemons

rpc.portmap daemon, Remote Procedure Call

rpcinfo command, Setting Up an NIS Client with GNU libc

RR (resource record), The DNS Database Files

RS-232 serial interface, Serial Hardware

rsh command, Configuring Remote Login and Execution

rsmtp

command, Command Execution
program, How Is Mail Delivered?

RTS/CTS (Ready to Send/Clear to Send), Serial Hardware

ruleset semantics (sendmail), Ruleset Semantics

Running Linux, Documentation Available Commercially

Rusling, David A., Sources of Information

Russell, Paul, IP Firewall Chains (2.2 Kernels)

S

Salz, Rich, NNTP and the nntpd Daemon

scp command, Configuring Remote Login and Execution, The ssh client, Using ssh

secondary option (BIND), The named.boot File

securenets option, NIS Server Security

security, Running in Server Mode

Ethernet, All About ifconfig
false hostnames, The host.conf File
filtering, What Is IP Filtering?
firewalls, TCP/IP Firewall
methods of attack, Methods of Attack
network, TCP/IP Firewall
PPP, Using chat to Automate Dialing
remote login, Configuring Remote Login and Execution
SLIP, Using dip
spoofing, The host.conf File
system, System Security
TCP servers, The inetd Super Server, The tcpd Access Control Facility
using NIS, NIS Server Security
using PPP, General Security Considerations, The PAP Secrets File
UUCP, Controlling Access to UUCP Features

sed command (UNIX), Installation

sendbatches command, Article Batching

sendmail, Electronic Mail

access database, The access database
analyzing mail statistics, Analyzing Mail Statistics
configuration files, Overview of Configuration Files
hostat command, hoststat
important configurations, Some Useful sendmail Configurations
installing, Installing sendmail
m4 options, Configuring sendmail Options
mailstats command, mailstats
managaing email aliases, Managing Mail Aliases
management tools, Tips and Tricks
managing the mail spool, Managing the Mail Spool
options, configuring, Configuring sendmail Options
processing mail queues, Forcing a Remote Host to Process its Mail Queue
rewrite rules, Interpreting and Writing Rewrite Rules
ruleset semantics, Ruleset Semantics
running, Running sendmail
smart host configurations, Using a Smart Host
testing the configuration, Testing Your Configuration
virtual email hosting, Configuring Virtual Email Hosting
virtusertable feature, Forwarding virtual-hosted mail to other destinations

sendmail.cf file, Introduction to sendmail, The sendmail.cf and sendmail.mc Files

configuring sendmail options, Configuring sendmail Options
generating, Generating the sendmail.cf File
R and S commands, sendmail.cf R and S Commands

sendmail.df file, The sendmail.cf and sendmail.mc Files

sendmail.mc file, The sendmail.cf and sendmail.mc Files

parameters, Typically Used sendmail.mc Parameters
two examples, Two Example sendmail.mc Files

.Sequence file, Be Paranoid: Call Sequence Checks

Sequenced Packet eXchange (SPX), Xerox, Novell, and History

Sequenced Packet Protocol (SPP), Xerox, Novell, and History

serial devices

accessing, Accessing Serial Devices
configuring, Configuring the Serial Hardware

serial line

device file, Accessing Serial Devices
hardware handshake, Serial Hardware, The stty Command
protecting characters, Link Control Options

servers

inetd, The inetd Super Server, The inetd Super Server
kernel-based support, Kernel-Based NFSv2 Server Support
master, Getting Acquainted with NIS, Running an NIS Server
nfsd daemon, The Network File System
NIS, Getting Acquainted with NIS
rpc.nfsd daemon, The Network File System
slave, Getting Acquainted with NIS, Running an NIS Server
tcpd daemon wrapper, The tcpd Access Control Facility, The tcpd Access Control Facility
UUCP, Setting Up Your System for Dialing In
ypserv command, Getting Acquainted with NIS

Service Advertisement Protocol (SAP), Xerox, Novell, and History, Configuring an IPX Router

services, More on Ports

port numbers and, More on Ports
restricting access to, System Security, The tcpd Access Control Facility
setting up, The inetd Super Server
well-known, More on Ports, The Services and Protocols Files

services file, The Services and Protocols Files

services.byname map, Choosing the Right Maps

setnewsids (C News), C News

setting

domain name, Setting the Hostname
hostname, Setting the Hostname
IRQ, All About ifconfig
NIS domain, Getting Acquainted with NIS, Setting Up an NIS Client with GNU libc

shadow passwords and NIS, Using NIS with Shadow Support

sites, History

leaf, Mail Routing in the UUCP World

Skahan, Vince, About This Book

sl1 device, A Tour of Linux Network Devices

Slackware (Linux distribution), Obtaining Linux

slattach program, SLIP Operation

slave servers, Getting Acquainted with NIS, Running an NIS Server

SLIP (Serial Line IP) protocol, IP Over Serial Lines, Communications Software for Modem Links, General Requirements, Running in Server Mode

driver, The PPP and SLIP Drivers
let users initiate, Using dip
null modem cable for, A Serial NULL Modem Cable
operation, SLIP Operation
routing, Checking the ARP Tables

SLIPDISC (line discipline), SLIP Operation

sliplogin program, Running in Server Mode

slist command, Server List

slogin command, Configuring Remote Login and Execution, The ssh client, Using ssh

smart host configurations, Using a Smart Host

smart host routing, Mail Routing in the UUCP World

SMART_HOST macro, Using a Smart Host

SMTP (Simple Mail Transfer Protocol), How Is Mail Delivered?

batched, Command Execution, How Is Mail Delivered?
service, Running Exim

SOA (DNS record), The DNS Database, The DNS Database Files

sockets, The Socket Library

source routing, Kernel Networking Options in Linux 2.0.0 and Higher

source-routed address, Mixing Different Mail Formats

spamming, Managing Unwanted or Unsolicited Mail (Spam), Protecting Against Mail Spam

Spencer, Henry, Usenet History

spoofing

attacks, Methods of Attack
preventing, The host.conf File

spool directory, UUCP Transfers and Remote Execution

spooling, UUCP Transfers and Remote Execution

ssh command, Configuring Remote Login and Execution

clients, The ssh client, The ssh client
configuring, Installing and Configuring ssh
running clients, Using ssh
sshd daemon, The ssh daemon, The ssh daemon

ssh tools, System Security

ssh-keygen utility, The ssh daemon, The ssh client

.ssh/authorized_keys file, Using ssh

sshd daemon, The ssh daemon, The ssh daemon

standards, filesystem, File System Standards

Start of Authority, The DNS Database

Storm, Kim F., nn Configuration

Stover, Martin, IPX and Linux, NetWare Server Emulation

stty command, The stty Command

subdomains, How DNS Works

DNS, How DNS Works, Reverse Lookups

subnets

DNS, creating, Creating Subnets
IP, Subnetworks, Kernel Networking Options in Linux 2.0.0 and Higher

sudo command, Using dip

support, online, Online Linux Support

SuSE (Linux distribution), Obtaining Linux

synchronizing name servers, Types of Name Servers

sys file (/etc/news), The sys File

syslog, Debugging Your PPP Setup, The tcpd Access Control Facility, The exports File

system maintenance, Maintaining Your System

system security, System Security

T

tass newsreader, tin Configuration

Taylor UUCP, Managing Taylor UUCP

accounts, Providing UUCP Accounts

alternates, Alternates

anonymous, Anonymous UUCP

call sequence check, The Inner Workings of uucico, Be Paranoid: Call Sequence Checks

call time, Restricting call times

calling in, Setting Up Your System for Dialing In

calling out, uucico Command-line Options

chat scripts, The login chat

checking, Taylor Configuration Files

command execution, Command Execution

configuration files, UUCP Configuration Files, General Configuration Options Using the config File

configure as server, Setting Up Your System for Dialing In

device, port and speed, Identifying Available Devices Through the port File

dial file, How to Dial a Number Using the dial File

dialcode file, Telephone number

direct lines, Using a Direct Connection

file transfer, File Transfers

forwarding, Forwarding

handshake, The Inner Workings of uucico

HDB, Log Files and Debugging

hostname, Site Naming, General Configuration Options Using the config File

job, UUCP Transfers and Remote Execution

logging and debugging, uucico Command-line Options, Log Files and Debugging

logging in, What UUCP Needs to Know, The login chat

login chat, The login chat

login security, Protecting Yourself Against Swindlers

mail, Command Execution

Mapping Project, Site Naming

master, The Inner Workings of uucico

modem, Identifying Available Devices Through the port File, How to Dial a Number Using the dial File

news, Command Execution

over TCP/IP, UUCP Over TCP

passwd file, Providing UUCP Accounts

phone number, Telephone number

port file, Identifying Available Devices Through the port File

priorities, UUCP Transfers and Remote Execution, Restricting call times

protocols, The Inner Workings of uucico

tuning, Tuning the Transmission Protocol

remote system, How to Tell UUCP About Other Systems Using the sys File, Restricting call times, System name

restrict

call time, Restricting call times
command execution, Command Execution
file transfer, File Transfers
forwarding, Forwarding

retry interval, Restricting call times

set up logins, Providing UUCP Accounts

slave, The Inner Workings of uucico

spool directory, UUCP Transfers and Remote Execution

spool grade, UUCP Transfers and Remote Execution, Restricting call times

statistics, Log Files and Debugging

sys file, How to Tell UUCP About Other Systems Using the sys File

uucico, The Inner Workings of uucico

Taylor, Ian, Managing Taylor UUCP

TCP (Transmission Control Protocol), The Transmission Control Protocol

UUCP, UUCP Over TCP
wrapper program, The tcpd Access Control Facility

TCP/IP (Transmission Control Protocol/Internet Protocol)

accounting, IP Accounting
compressing packets, SLIP Operation, The Point-to-Point Protocol
configuring networks, Configuring TCP/IP Networking
networks, TCP/IP Networks

tcpd daemon wrapper, The tcpd Access Control Facility, The tcpd Access Control Facility

telephones

demand dialing, Demand Dialing
persistent dialing, Persistent Dialing
sending data over, IP Over Serial Lines, The Point-to-Point Protocol

terminal programs, Communications Software for Modem Links

testing

network configuration, The Loopback Interface, Ethernet Interfaces
sendmail configuration, Testing Your Configuration

TFTP (Trivial File Transfer Protocol), System Security, The inetd Super Server

thinnet, Ethernets

Thümmler, Swen, The Network Information System

tin newsreader, configuration, tin Configuration

TNC (Terminal Node Controller), Other Types of Hardware

Token Ring

ARP and, Address Resolution
driver, Other Network Types
networks, Other Types of Hardware

TOS (Type Of Service) bits, manipulating, TOS Bit Manipulation

tr0 device, A Tour of Linux Network Devices

Tridgell, Andrew, Linux Networking

tripwire command, System Security

trn newsreader, configuration, trn Configuration

T’so, Theodore, The setserial Command

ttys, Introduction to Serial Devices

line discipline, Introduction to Serial Devices, SLIP Operation, PPP on Linux

U

UART, Serial Hardware

UDP (User Datagram Protocol), The User Datagram Protocol

unsolicited mail, managing, Managing Unwanted or Unsolicited Mail (Spam), Protecting Against Mail Spam

Urlichs, Matthias, Different Streaks of Development

Usenet, Netnews

map files, Mixing UUCP and RFC-822
maps, Mail Routing in the UUCP World

USENIX Association, SAGE, SAGE: The System Administrators Guild

User Datagram Protocol (UDP), The User Datagram Protocol

user groups, Linux User Groups

/usr/lib/uucp/passwd file, Providing UUCP Accounts

uucico command, Managing Taylor UUCP, The Inner Workings of uucico

command-line options, uucico Command-line Options

UUCP, Communications Software for Modem Links

anonymous, Anonymous UUCP

checking, Troubleshooting

email routing, Mail Routing in the UUCP World

Exim interface to, UUCP Setup

jobs, UUCP Transfers and Remote Execution

mail, How Is Mail Delivered?

map files, Mixing UUCP and RFC-822

Mapping Project, Mail Routing in the UUCP World

networks, UUCP Networks

news, Delivering News

protocols, UUCP Low-Level Protocols

selection, Selecting Specific Protocols

security, Protecting Yourself Against Swindlers

troubleshooting, Troubleshooting

uucpxtable, Mixing UUCP and RFC-822

uuwho command, Mixing UUCP and RFC-822

uux command, Article Batching

V

Van Jacobson header compression, SLIP Operation, The Point-to-Point Protocol

VERSIONID macro defintion, VERSIONID and OSTYPE

virtual email hosting

accepting mail for other domains, Accepting mail for other domains
forwarding mail to other destinations, Forwarding virtual-hosted mail to other destinations

virtusertable feature (sendmail), Forwarding virtual-hosted mail to other destinations

Vos, Jos, Original IP Firewall (2.0 Kernels)

ypcat

command, Getting Acquainted with NIS
utility, Setting Up an NIS Client with GNU libc

yppasswd, Using the passwd and group Maps

ypserv command, Getting Acquainted with NIS

Yutaka, Niibe, The PLIP Driver

Z

Zen, What Is Usenet, Anyway?
zone files, Running named

Previous Chapter

D. SAGE: The System Administrators Guild

Next Chapter

Colophon

Table of Contents for Linux Network Administrator's Guide, Second Edition

Index

Symbols

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Table of Contents for
Linux Network Administrator's Guide, Second Edition