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Index: C

• developing language
• • History of UNIX
  • Tips on Avoiding Security-related Bugs
  • -Wall compiler option : Tips on Avoiding Security-related Bugs
• shell : (see csh)
• audit : The Basic Log Files
• cables, network
• • Network cables
  • Fiber optic cable
  • cutting : Destructive Attacks
  • tampering detectors for : Wiretapping
  • wiretapping : Wiretapping
• cache, nameserver : Security and Nameservice
• caching : Device Files
• Caesar Cipher : ROT13: Great for Encoding Offensive Jokes
• calculating costs of losses : The Cost of Loss
• call forwarding : Physical Protection of Modems
• Call Trace : Tracing a Connection
• CALLBACK= command : Permissions Commands
• callbacks
• • Additional Security for Modems
  • BNU UUCP : Permissions Commands
  • Version 2 UUCP : Requiring callback
• Caller-ID (CNID)
• • Caller-ID (CNID)
  • Additional Security for Modems
  • Tracing a Connection
• Canada, export control in : Cryptography and Export Controls
• carbon monoxide : Smoke
• caret (^) in encrypted messages : What Is Encryption?
• case in usernames : Usernames
• cat command
• • The /etc/passwd File and Network Databases
  • cmds: Providing Remote Command Execution
  • -ve option : The ncheck command
  • -v option : Hidden files and directories
• cat-passwd command : The /etc/passwd File and Network Databases
• CBC (cipher block chaining)
• • DES modes
  • des: The Data Encryption Standard
• CBW (Crypt Breaker's Workbench) : The crypt program
• CCTA IT Security & Infrastructure Group : UK: other government departments and agencies
• tutorial : Read-only Filesystems
• CDFs (context-dependent files)
• • Context-Dependent Files
  • Hidden files and directories
• ceilings, dropped : Raised floors and dropped ceilings
• cellular telephones : Electrical noise
• CERCUS (Computer Emergency Response Committee for Unclassified Systems) : TRW network area and system administrators
• Cerf, Vint : IPv4: The Internet Protocol Version 4
• CERN : CERN HTTP Daemon
• CERT (Computer Emergency Response Team)
• • Using Message Digests
  • Response Personnel?
  • All Internet sites
  • CERT-NL (Netherlands) : Netherlands: SURFnet-connected sites
  • mailing list for : CERT-advisory
• CFB (cipher feedback) : DES modes
• CGI (Common Gateway Interface) : Security and the World Wide Web
• • scripts
  • • Running a Secure Server
    • Writing Secure CGI Scripts and Programs
    • Beware mixing HTTP with anonymous FTP
• cgi-bin directory : Understand Your Server's Directory Structure
• chacl command : HP-UX access control lists
• • -f option : HP-UX access control lists
  • -r option : HP-UX access control lists
• change detection
• • Detecting Change
  • Final Note
• character devices : Device Files
• chat groups, harassment via : Harassment, Threatening Communication, and Defamation
• chdir command
• • Tips on Avoiding Security-related Bugs
  • Tree-structure attacks
• checklists for detecting changes
• • Checklists and Metadata
  • Checksums and Signatures
• checksums
• • Checksums
  • Checksums and Signatures
• Chesson, Greg : Versions of UUCP
• chfn command : Monitoring File Format
• chgrp command : chgrp: Changing a File's Group
• child processes : Creating Processes
• chkey command : Proving your identity
• chmod command
• • chmod: Changing a File's Permissions
  • Using Octal File Permissions
  • Restricting Logins
  • -A option : HP-UX access control lists
  • -f option : chmod: Changing a File's Permissions
  • -h option : chmod: Changing a File's Permissions
  • -R option : chmod: Changing a File's Permissions
• chokes : (see firewalls)
• chown command
• • chown: Changing a File's Owner
  • Tips on Avoiding Security-related Bugs
• chroot system call
• • Restricted Filesystem
  • Checking new software
  • Trojan Horses
  • Using chroot()
  • with anonymous FTP : Setting up anonymous FTP with the standard UNIX FTP server
• chrootuid daemon : chrootuid
• chsh command : Integrating One-time Passwords with UNIX
• CIAC (Computer Incident Advisory Capability) : S. Department of Energy sites, Energy Sciences Network (ESnet), and DOE contractors
• CIDR (Classless InterDomain Routing)
• • IP networks
  • CIDR addresses
• cigarettes : Smoke
• cipher
• • ROT13: Great for Encoding Offensive Jokes
  • (see also cryptography; encryption)
  • block chaining (CBC)
  • • DES modes
    • des: The Data Encryption Standard
  • ciphertext
  • • What Is Encryption?
    • The crypt() Algorithm
  • feedback (CFB) : DES modes
• CISCO : CISCO Systems
• civil actions (lawsuits) : Civil Actions
• classified data and breakins
• • Legal Options After a Break-in
  • Federal Jurisdiction
• Classless InterDomain Routing (CIDR)
• • IP networks
  • CIDR addresses
• clear text : The crypt() Algorithm
• Clear to Send (CTS) : The RS-232 Serial Protocol
• client flooding : Security and Nameservice
• client/server model : Clients and Servers
• clients, NIS : (see NIS)
• clock, system
• • File Times
  • Network Time Protocol (NTP) (UDP Port 123)
  • for random seeds : Picking a Random Seed
  • resetting : Checksums and Signatures
  • Secure RPC timestamp : Setting the window
• clogging : Clogging
• CMW (Compartmented-Mode Workstation) : "Secure" Versions of UNIX
• CNID (Caller-ID)
• • Caller-ID (CNID)
  • Additional Security for Modems
  • Tracing a Connection
• CO2 system (for fires) : Fire
• COAST (Computer Operations, Audit, and Security Technology)
• • COAST
  • Software Resources
• code breaking : (see cryptography)
• codetutorials : Code Books
• CodeCenter : Tips on Avoiding Security-related Bugs
• cold, extreme : Temperature extremes
• command shells : (see shells)
• commands
• • Accounts That Run a Single Command
  • (see also under specific command name)
  • accounts running single : Accounts That Run a Single Command
  • in addresses : Early Security Problems with UUCP
  • editor, embedded : Other initializations
  • remote execution of
  • • uux Command
    • cmds: Providing Remote Command Execution
    • rexec (TCP Port 512)
  • running simultaneously
  • • Tips on Avoiding Security-related Bugs
    • (see also multitasking)
• commands in <Directory> blocks : Commands Within the <Directory> Block
• COMMANDS= command : Permissions Commands
• commenting out services : Primary UNIX Network Services
• comments in BNU UUCP : Sample Permissions file
• Common Gateway Interface : (see CGI)
• communications
• • modems : (see modems)
  • national telecommunications : Federal Jurisdiction
  • threatening : Harassment, Threatening Communication, and Defamation
• comparison copies
• • Comparison Copies
  • rdist
• compress program : Ways of improving the security of crypt
• Compressed SLIP (CSLIP) : IPv4: The Internet Protocol Version 4
• Computer Emergency Response Committee for Unclassified Systems (CERCUS) : TRW network area and system administrators
• Computer Emergency Response Team : (see CERT)
• Computer Incident Advisory Capability (CIAC) : S. Department of Energy sites, Energy Sciences Network (ESnet), and DOE contractors
• computer networks : Add-On Functionality Breeds Problems
• Computer Security Institute (CSI) : Computer Security Institute (CSI)
• computers
• • assigning UUCP name : Permissions Commands
  • auxiliary ports : Auxiliary ports on terminals
  • backing up individual : Individual Workstation
  • contacting administrator of : How to contact the system administrator of a computer you don't know
  • cutting cables to : Destructive Attacks
  • failure of : taxonomy of computer failures
  • hostnames for
  • • Hostnames
    • The /etc/hosts file
  • modems : (see modems)
  • multiple screens : Multiple screens
  • multiple suppliers of : Dependence on Third Parties
  • non-citizen access to : Munitions Export
  • operating after breakin : Resuming Operation
  • portable : Portables
  • remote command execution : rexec (TCP Port 512)
  • running NIS+ : NIS+ Limitations
  • screen savers : screen savers
  • security
  • • culture of : Understanding the Computer Security "Culture"
    • four steps toward : Defend in depth
    • physical : Physically secure your computer
    • references for : General Computer Security
    • resources on : Other Computer References
  • seized as evidence : Hazards of Criminal Prosecution
  • transferring files between : uucp Command
  • trusting
  • • Can you Trust Your Computer?
    • What the Superuser Can and Cannot Do
  • unattended
  • • Unattended Terminals
    • screen savers
  • unplugging : Getting Rid of the Intruder
  • vacuums for : Dust
  • vandalism of : (see vandalism)
  • virtual : (see Telnet utility)
• computing base (TCB) : Trusted computing base
• conf directory : Configuration files
• • conf/access.conf : (see access.conf file)
  • conf/srm.conf file : The access.conf and .htaccess Files
• confidentiality : (see encryption; privacy)
• configuration
• • errors : Prevention
  • files : Abusing Automatic Mechanisms
  • • logging : Informational material
    • MCSA web server : Configuration files
    • UUCP version differences : Versions of UUCP
  • simplifying management of : Read-only Filesystems
• connections
• • hijacking : IP Security
  • laundering : Who is on the Internet?
  • tracing
  • • Tracing a Connection
    • How to contact the system administrator of a computer you don't know
  • unplugging : Getting Rid of the Intruder
• connectors, network : Network connectors
• consistency of software : Planning Your Security Needs
• console device : Device Files
• CONSOLE variable : Secure Terminals
• constraining passwords : Constraining Passwords
• consultants : Your Consultants?
• context-dependent files (CDFs)
• • Context-Dependent Files
  • Hidden files and directories
• control characters in usernames : Usernames
• cookies
• • Using Xauthority magic cookies
  • Do not trust the user's browser!
• COPS (Computer Oracle and Password System)
• • NIS+ Limitations
  • COPS (Computer Oracle and Password System)
• copyleft
• • Comparison Copies
  • copyleft Infringement
  • Software piracy and the SPA
  • notices of : Other Tips
• CORBA (Common Object Request Broker Architecture) : Sun's Remote Procedure Call (RPC)
• core files
• • Tips on Avoiding Security-related Bugs
  • The kill Command
• cost-benefit analysis
• • Cost-Benefit Analysis
  • Convincing Management
• costs of losses : The Cost of Loss
• cp command : Simple Local Copies
• cpio program
• • Building an Automatic Backup System
  • Simple Archives
• crack program
• • Cracking Your Own Passwords
  • Setting Up Web Users and Passwords
• cracking
• • backing up because of : taxonomy of computer failures
  • passwords
  • • Bad Passwords: Open Doors
    • Passwords on Multiple Machines
    • The crypt() Algorithm
    • Cracking Your Own Passwords
    • The dilemma of password crackers
    • TELNET (TCP Port 23)
    • logging failed attempts : syslog Messages
  • responding to
  • • Discovering a Break-in
    • Damage Control
  • using rexecd : rexec (TCP Port 512)
• crashes, logging : Exception and activity reports
• CRC checksums : (see checksums)
• Cred table (NIS+) : NIS+ Tables
• criminal prosecution
• • Criminal Prosecution
  • Final Note on Criminal Actions
• cron file
• • Simple listing
  • Filename attacks
  • crontab entries
  • automating backups : Building an Automatic Backup System
  • cleaning up /tmp directory : /tmp Problems
  • collecting login times : lastlog File
  • symbolic links in : Other Logs
  • system clock and : Network Time Protocol (NTP) (UDP Port 123)
  • uucp scripts in : Automatic Execution of Cleanup Scripts
• crontab file : Automatic Execution of Cleanup Scripts
• Crypt Breaker's Workbench (CBW) : The crypt program
• crypt command/algorithm
• • Summary of Private Key Systems
  • UNIX crypt: The Original UNIX Encryption Command
  • Example
  • The UNIX Encrypted Password System
  • Setting Up Web Users and Passwords
• crypt function
• • The UNIX Encrypted Password System
  • The crypt() Algorithm
  • Algorithm and Library Changes
  • Tips on Using Passwords
• crypt16 algorithm : Crypt16() and Other Algorithms
• cryptography
• • Cryptography
  • Cryptography and Export Controls
  • Protection against eavesdropping
  • checklist for : Cryptography
  • checksums : Checksums
  • digital signatures : (see digital signatures)
  • export laws concerning : Cryptography and Export Controls
  • Message Authentication Codes (MACs) : Message authentication codes
  • message digests : (see message digests)
  • PGP : (see PGP)
  • private-key
  • • Common Cryptographic Algorithms
    • Summary of Private Key Systems
  • public-key
  • • Common Cryptographic Algorithms
    • Summary of Public Key Systems
    • RSA and Public Key Cryptography
    • Strength of RSA
    • Digital Signatures
    • Controlling Access to Files on Your Server
    • Dependence on Third Parties
  • references on : Cryptography Books
  • and U.S. patents : Cryptography and the U.S. Patent System
• csh (C shell)
• • Problems with SUID
  • Shell Features
  • Tips on Avoiding Security-related Bugs
  • Running the User's Shell
  • (see also shells)
  • autologout variable : Built-in shell autologout
  • history file : Shell History
  • uucp command : uucp with the C shell
• cshrc file
• • cshrc, .kshrc
  • Built-in shell autologout
  • Changes to startup files
• CSI (Computer Security Institute) : Computer Security Institute (CSI)
• CSLIP (Compressed SLIP) : IPv4: The Internet Protocol Version 4
• ctime
• • Inodes
  • File Times
  • chmod: Changing a File's Permissions
  • inode Modification Times
  • Checksums and Signatures
• cu command
• • Modems and UNIX
  • Originate testing
  • Privilege testing
  • -l option : Originate testing
• culture, computer security : Understanding the Computer Security "Culture"
• current directory : Current Directory and Paths
• Customer Warning System (CWS) : Oracle customers

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