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Index: N

name service
- Name Service
- Other naming services
- security and : Security and Nameservice
name-value pairs in BNU UUCP : Name-value pairs
named daemon : DNS under UNIX
named nameserver : DNS nameserver attacks
named-xfer program : DNS under UNIX
named.boot file
- DNS zone transfers
- DNS nameserver attacks
names
- choosing UUCP : Permissions Commands
- computer
- - Hostnames
  - The /etc/hosts file
- user : (see usernames)
nameserver attacks, DNS : DNS nameserver attacks
nameserver cache loading : Security and Nameservice
NASA
- Ames Research Center : NASA: Ames Research Center
NASA: Goddard Space Flight Center : NASA: Goddard Space Flight Center
National Aeronautical Space Agency : (see NASA)
National Computer Security Center (NCSC) : National Institute of Standards and Technology (NIST)
National Institute of Standards and Technology : (see NIST)
National Science Foundation Network : (see networks, NFSNET)
national security : Federal Jurisdiction
natural disasters
- What Is Computer Security?
- taxonomy of computer failures
- Physical security for backups
- Fire
- (see also physical security)
- accidents : Preventing Accidents
- earthquakes : Earthquake
- fires
- - Fire
  - Smoke
- lightning
- - Protecting Computer Hardware
  - Lightning
natural gas : Explosion
Naval Computer Incident Response Team (NAVCIRT) : S. Department of the Navy
ncheck command : The ncheck command
- -s option
- - The ncheck command
  - Device Files
NCSA HTTPD server : access_log Log File
NCSA server : (see Web servers)
NCSC (National Computer Security Center) : National Institute of Standards and Technology (NIST)
needexpnhelo (sendmail) : Improving the security of Berkeley sendmail V8
needmailhelo (sendmail) : Improving the security of Berkeley sendmail V8
needvrfyhelo (sendmail) : Improving the security of Berkeley sendmail V8
nested directories : Tree-structure attacks
Netgroup table (NIS+) : NIS+ Tables
netgroups, NIS
- NIS Netgroups
- NIS is confused about "+"
- limiting imported accounts : Using netgroups to limit the importing of accounts
NetInfo
- The /etc/passwd File and Network Databases
- Other naming services
Netmasks table (NIS+) : NIS+ Tables
netnews~firewalls : Netnews
netrc file : Network Setup
Netscape Navigator
- encryption system of : Eavesdropping Over the Wire
- random number generator : Picking a Random Seed
netstat command
- Monitoring Your Network with netstat
- Catching One in the Act
- Tracing a Connection
- -a option : Monitoring Your Network with netstat
- -n option : Monitoring Your Network with netstat
network connections : TELNET (TCP Port 23)
network databases : The /etc/passwd File and Network Databases
Network Filesystem : (see NFS)
network filesystems : Turning Off SUID and SGID in Mounted Filesystems
Network Information Center (NIC) : How to contact the system administrator of a computer you don't know
Network Information System : (see NIS)
Network News Transport Protocol : (see NNTP)
network providers : Network Providers that Network Too Well
network services
- TCP/IP Services
- Summary
- Tips on Writing Network Programs
- DNS : (see DNS)
- encryption with : Security Implications of Network Services
- finger : (see finger command)
- FTP : (see FTP)
- NNTP : (see NNTP)
- NTP : (see NTP)
- passwords for : Security Implications of Network Services
- POP : (see POP)
- root account with : Security Implications of Network Services
- securing : Securing Network Services
- SMTP : (see SMTP)
- SNMP : (see SNMP)
- spoofing : Monitoring Your Network with netstat
- systat : systat (TCP Port 11)
- table of : Table of IP Services
- Telnet : (see Telnet utility)
- TFTP : (see TFTP)
- UUCP over TCP : UUCP over TCP (TCP Port 540)
Network Time Protocol : (see NTP)
network weaving : Who is on the Internet?
networks
- 10Base-T : Eavesdropping by Ethernet and 10Base-T
- allowing threats from : Entry
- ARPANET : The Internet
- backing up
- - Small Network of Workstations and a Server
  - Large Service-Based Networks with Large Budgets
- backups across : Backups Across the Net
- cables for : Network cables
- checklist for
- - TCP/IP Networks
  - TCP/IP Services
- configuration files : Network Setup
- connectors for : Network connectors
- cutting cables : Destructive Attacks
- denial of service on
- - Network Denial of Service Attacks
  - Clogging
- disabling physically : Signal Grounding
- Internet : The Internet
- LANs : (see LANs)
- logging across : Logging across the network
- logging services of : Logging Network Services
- MANs : Networking
- mobile computing : One-Time Passwords
- monitoring with netstat : Monitoring Your Network with netstat
- NFSNET : The Internet
- packet-switching : IPv4: The Internet Protocol Version 4
- scanning : Network Scanning
- security references : Network Technology and Security
- services for : Back Doors and Trap Doors
- sniffers : IP Security
- spoofed connection : Trusted path
- TCP/IP : (see TCP/IP, networks)
- UNIX and : Networking and UNIX
- UUCP over : UUCP Over Networks
- WANs : Networking
Networks table (NIS+) : NIS+ Tables
networks, computer : Add-On Functionality Breeds Problems
Neumann, Peter : History of UNIX
newgrp command : Groups and older AT&T UNIX
newkey -u command
- Creating passwords for users
- When a user's passwords don't match
news : (see Usenet)
news (user) : Users and Groups
newsgroups, defamation/harassment via : Harassment, Threatening Communication, and Defamation
NEXTSTEP Window Server (NSWS) : NEXTSTEP Window Server (NSWS) (TCP Port 178)
NFS (Network Filesystem) : RPC, NIS, NIS+, and Kerberos
- authentication and
- - RPC Authentication
  - AUTH_KERB
- checklist for : NFS
- file permissions : File Permissions in Detail
- find command on : Finding All of the SUID and SGID Files
- -local option : Writable system files and directories
- MOUNT : NFS History
- Secure NFS : (see Secure NFS)
- server, and UUCP : UUCP and Security
- technical description of : NFS History
- and trusted hosts : The problem with trusted hosts
- -xdev option : Writable system files and directories
NIC (Network Information Center) : How to contact the system administrator of a computer you don't know
nice command : System overload attacks
nice numbers : Process priority and niceness
NIS (Network Information Service)
- + in
- - Sun's Network Information Service (NIS)
  - NIS is confused about "+"
- clients : Sun's Network Information Service (NIS)
- domains : NIS Domains
- maps : Sun's Network Information Service (NIS)
- netgroups
- - NIS Netgroups
  - NIS is confused about "+"
  - limiting imported accounts : Using netgroups to limit the importing of accounts
- Secure RPC with
- - Setting Up Secure RPC with NIS
  - Limitations of Secure RPC
- spoofing : Spoofing NIS
- UDP : UDP
- Yellow Pages : Other naming services
NIS (Network Information System)
- The /etc/passwd File and Network Databases
- Changing Your Password
- RPC, NIS, NIS+, and Kerberos
- Sun's Network Information Service (NIS)
- Unintended Disclosure of Site Information with NIS
NIS+
- The /etc/passwd File and Network Databases
- Changing Your Password
- Other naming services
- Sun's NIS+
- NIS+ Limitations
- integrity-checking software for : NIS+ Limitations
- principals : What NIS+ Does
- Secure RPC with
- - Setting Up Secure RPC with NIS
  - Limitations of Secure RPC
nisaddcred command : Proving your identity
niscat command : The /etc/passwd File and Network Databases
nischown command : Using NIS+
nispasswd command
- Changing Your Password
- Using NIS+
- When a user's passwords don't match
NIST (National Institute of Standards and Technology)
- National Institute of Standards and Technology (NIST)
- NIST (National Institute of Standards and Technology)
NNTP (Network News Transport Protocol) : Network News Transport Protocol (NNTP) (TCP Port 119)
nobody (user)
- Users and Groups
- Creating passwords for users
noexpn (sendmail) : Improving the security of Berkeley sendmail V8
noise, electrical : Electrical noise
nonadaptive modems : (see modems)
nonblocking systems : Sun's Remote Procedure Call (RPC)
nonce : Tips on Writing Network Programs
nonrepudiation : Message Digests and Digital Signatures
NORDUNET : NORDUNET: Denmark, Sweden, Norway, Finland, Iceland
NOREAD= command : Permissions Commands
Northwestern University : Northwestern University
nosuid : Back Doors and Trap Doors
Novell : History of UNIX
novrfy (sendmail) : Improving the security of Berkeley sendmail V8
Nowitz, David : Versions of UUCP
NOWRITE= command : Permissions Commands
npasswd package : Constraining Passwords
NPROC variable : Too many processes
NSA (National Security Agency) : National Security Agency (NSA)
NSWS (NextStep Window Server) : NEXTSTEP Window Server (NSWS) (TCP Port 178)
NTP (Network Time Protocol) : Network Time Protocol (NTP) (UDP Port 123)
- Secure RPC and : Setting the window
NU-CERT : Northwestern University
null device : Device Files
nuucp account
- How the UUCP Commands Work
- Assigning Additional UUCP Logins
- Format of USERFILE entry without system name

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