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absolute pathnames 
Absolute Software Corporation 
abuse account 
access
    open 
    physical, to hardware  2nd 
access control 
    access control lists  [See ACL]
    file permissions  [See permissions]
    Internet servers 
    NIS+ objects  2nd 
    physical access to computers  [See physical security]
    restricted filesystems 
    X Window System 
access devices 
ACCESS function (RPC) 
access() system call 
access_log file 
accidents  [See environmental dangers]
accounting, process 
accounts 
    aliases for 
    changing login shell  2nd 
    changing password 
    created by intruders 
    default 
    demo 
    dormant 
    expiring 
    group 
    historical 
    importing to NIS server  2nd  3rd 
    Joes  2nd 
    locking automatically 
    logging changes to 
    names commonly attacked 
    names for  [See usernames]
    open  2nd 
    restricted, with rsh 
    root, protecting 
    running single command 
    security checklist for 
    synchronized passwords on 
    viewing in network database 
    without passwords 
acct file  2nd  3rd 
acctcom program 
accton command 
ACK bit 
ACL (Access Control List) 
    indicated by + in file permission 
    NNTP with 
    part of Unix security standard 
ACM (Association for Computing Machinery)  2nd 
active FTP 
activists
    as authors of programmed threats 
    planting programmed threats 
aculog file  2nd 
adb
    command 
    debugger 
add-on functionality 
addresses
    CIDR 
    Internet  [See IP addresses]
Adleman, Leonard M. 
    "A Method for Obtaining Digital Signatures" 
admintool command 
Advanced Encryption Standard (AES) 
Advanced Research Projects Agency (ARPA) 
air ducts, access through 
AIX
    file for new shells 
    history of 
    preventing users from changing passwords 
    silent ignore.* in syslog.conf 
    trusted path 
alarms  [See detectors]
Albitz, Paul (DNS and BIND) 
algorithmic attacks on encryption 
aliases
    account 
    decode 
    email  2nd 
        back door using 
    file for  2nd  3rd  4th 
    phantom email, avoiding with 
All Tomorrow's Parties (Gibson, William) 
Allman, Eric 
allow-transfers directive 
Amanda backup system  2nd  3rd 
amanda user 
Amateur Action Bulletin Board System 
American Civil Liberties Union v. Reno 
American Society for Industrial Security (ASIS) 
Amoroso, Edward (Fundamentals of Computer Security Technology) 
analog program 
analytic attacks on encryption 
ancestor directories, detecting changes to 
Anderson, Ross (Security Engineering) 
ANI (Automatic Number Identification)  2nd 
anlpasswd package 
anonymous FTP  2nd  3rd 
ANSI
    C compiler 
    C standards 
answer mode 
answer testing, modems 
answerback terminal mode, Trojan horses and 
Apache web servers
    always running 
    buffer overflows in 
    crypt() needed to verify passwords 
    logging from 
    requests increasing forked processes 
    security problems with 
    SSL library for 
    Tripwire for 
APOP option (POP) 
append-only files 
AppleTalk protocol 
application-level encryption 
Applied Cryptography: Protocols, Algorithms, and Source Code in C (Schneier, Bruce) 
ar program  2nd 
archiving information  2nd  [See also backups]3rd 
arguments, checking 
arp command 
ARP table, printing contents of 
ARPA (Advanced Research Projects Agency) 
ARPANET network 
arpwatch program 
ASIS (American Society for Industrial Security) 
assert macro 
assessing risks  2nd 
assets
    identifying 
    identifying threats to 
    physical 
Association for Computing Machinery  [See ACM]
asymmetric key algorithms  2nd  [See also public key algorithms]
Asynchronous Transfer Mode (ATM) 
@ Large (Freedman, David H. and Mann, Charles C.) 
at program  2nd 
at sign (@), in xhost list 
AT&T System V  [See System V Unix]
Athena, Project  2nd  [See also Kerberos system]
atime  2nd 
Atkins, Derek 
Atkins, E. Todd  2nd 
ATM (Asynchronous Transfer Mode) 
attackers, computer  [See intruders]
audio device 
audit IDs  2nd 
audit trail  2nd  [See also log files]
auditing  2nd  [See also logging]3rd 
    C2 audit 
    compliance audit 
    security checklist for 
    transaction audit 
    user access to equipment 
auth service  2nd 
AUTH_DES authentication  2nd  3rd 
AUTH_KERB authentication 
AUTH_NONE authentication 
AUTH_UNIX authentication  2nd  3rd 
authd service 
authdes_win variable 
authentication 
    email and 
    ident, for TCP/IP 
    IP services 
    Kerberos 
    LDAP 
    of logins 
    message digests 
    Netnews messages 
    for network systems  [See network authentication systems]
    PAM 
    public key  2nd  3rd 
    RPC 
    Samba  2nd 
    Secure RPC 
    security checklist for  2nd 
    SMB 
    SSH client 
    SSH host 
    standards for 
    xhost facility 
authenticators  2nd  [See also passwords]
Authenticode 
authorization  [See authentication]
authwarnings option, sendmail 
Auto_Mounter table (NIS+) 
autologout shell variable 
Automatic Number Identification  [See ANI]
automatic systems
    abuse of 
    for backups 
availability of services 
awareness, security  [See security, user awareness of]
awk scripts, Trojan horses in