Table of Contents for

Practical UNIX and Internet Security, 3rd Edition

V

VA Linux, Businesses adopt Unix

vacation program, Delivery to programs

vampire taps, Fiber optic cable

vandalism, Defending Against Vandalism–Utility connections

vandals, computer, Introduction: Some Fundamental Questions (see intruders)

/var directory, The su Log, The su Log, Read-Only Filesystems, lastlog File–lastlog File, utmp and wtmp Files–Pruning the wtmp file, loginlog File, Process Accounting: The acct/pacct File, Process Accounting: The acct/pacct File, Other files, Other files

(see also /usr firectory)

/var/adm directory, Other files

/var/adm/acct file, Process Accounting: The acct/pacct File

/var/adm/lastlog file, lastlog File–lastlog File

/var/adm/loginlog file, loginlog File

/var/adm/messages file, The su Log

/var/adm/savacct file, Process Accounting: The acct/pacct File

/var/adm/wtmp file, utmp and wtmp Files–Pruning the wtmp file

/var/log directory, Other files

variables, bounds checking, Coding Standards

Varley, John (Press Enter), Understanding the Computer Security “Culture”

VC-I video encryption algorithm, Systems-based attacks

vendors, Get a referral and insist on references, Get a referral and insist on references, Beware of soup-to-nuts, Insist on breadth of background, People, “Reformed” hackers, Other Contingencies, Other People, Can You Trust Your Suppliers?–Network Providers That Network Too Well, Your Vendor?, Your Consultants?, Response Teams and Vendors

security, Get a referral and insist on references, Get a referral and insist on references, Beware of soup-to-nuts, Insist on breadth of background, People, “Reformed” hackers, Other People, Your Consultants?, Response Teams and Vendors

access given to, Other People

all-in-one contracts, Beware of soup-to-nuts

corporate stability of, Get a referral and insist on references

evaluating employees of, People

experience of, Insist on breadth of background

hackers as, “Reformed” hackers

mailing lists for, Response Teams and Vendors

referrals and references for, Get a referral and insist on references

trusting, Your Consultants?

software, Other Contingencies, Can You Trust Your Suppliers?–Network Providers That Network Too Well, Your Vendor?

loss of, Other Contingencies

trusting, Can You Trust Your Suppliers?–Network Providers That Network Too Well, Your Vendor?

Venema, Wietse, SMTP: Simple Mail Transfer Protocol (TCP Port 25), Sun RPC’s portmapper (UDP and TCP Ports 111), Sun’s portmap/rpcbind, chrootuid, portmap, SATAN, TCP Wrappers

ventilation, Entrance through air ducts, Ventilation holes

access through, Entrance through air ducts

holes (in hardware), Ventilation holes

VERB command, SMTP, Security concerns with SMTP banners and commands

vfork() system call, Creating Processes

vfstab file, Which Files to Back Up?

vi editor, An example of a SUID attack: IFS and the /usr/lib/preserve hole, .exrc, .nexrc, Other initializations

vibrations, effects on hardware, Vibration

Viega, John (Building Secure Software), General Computer Security

Vinge, Vernor (True Names and Other Dangers), Understanding the Computer Security “Culture”

vipw command, Disabling an Account by Changing the Account’s Password

virtual filesystem interface, The Virtual Filesystem Interface

Virtual Light (Gibson, William), Understanding the Computer Security “Culture”

virtual nodes, The Virtual Filesystem Interface

Virtual Private Network (VPN), Networking

The Virus Bulletin, Computer Viruses and Programmed Threats

viruses, SMTP: Simple Mail Transfer Protocol (TCP Port 25), Programmed Threats: Definitions, Viruses, Viruses on the Distribution Disk, Computer Viruses and Programmed Threats

on distribution disk, Viruses on the Distribution Disk

email, SMTP: Simple Mail Transfer Protocol (TCP Port 25)

published resources on, Computer Viruses and Programmed Threats

visitors, security regarding, Other People

vnode interface, The Virtual Filesystem Interface (see virtual filesystem interface)

vold.log file, Essential Log Files

voltage spikes, Electrical noise (see power, surges)

VonStorch, William (Computer Crime: A Crimefighter’s Handbook), Computer Crime and Law

VPN (Virtual Private Network), Networking

VRFY command, SMTP, Security concerns with SMTP banners and commands, Security concerns with SMTP banners and commands, Security concerns with SMTP banners and commands

vsnprintf() system call, Things to Avoid

vsprintf() system call, Things to Avoid, Things to Avoid

vsyslog() system call, Unix syslog