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Table Of Contents  CertiGuide to Security+
 9  Glossary

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N-O

NAT (Network Address Translation)

Using a private IP range for internal traffic and public address (es) for external communication

http://www.webopedia.com/TERM/N/NAT.html

NetBus

A famous backdoor program (illicit server)

http://www.nwinternet.com/~pchelp/nb/netbus.htm

http://www.hackfix.org/netbusfix/

Netcat

*nix utility which reads and writes data across network connections, using TCP or UDP protocols

http://rr.sans.org/audit/netcat.php

Network sniffing

Refer to stiffing

NMAP/NMAPWin

A network port scanner with O/S detection

http://www.insecure.org/nmap/

http://www.nmapwin.org/

Non-essential services

A security hole left open via unneeded services

http://mandrake.petra.ac.id:8888/info/max/BkPg155x32.htm

Non-repudiation

Cannot be denied

http://cert.uni-stuttgart.de/archive/usenet/comp.security.misc/2002/07/msg00424.html

http://www.faqs.org/rfcs/rfc2828.html


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