ARP cache entries - view, modify, secure

The following links go to commands to view and modify ARP cache on a machine. In order to prevent cache poisoning you might want to prevent gratuitous ARP by forcing MAC addresses for various machines.

Windows

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/arp.mspx?mfr=true

http://m.youtube.com/watch?v=g0YUIuzmSTI

Linux

http://linux.about.com/library/cmd/blcmdl8_arp.htm

http://linux.about.com/od/lna_guide/a/gdelna50.htm

Mac

https://developer.apple.com/library/mac/documentation/Darwin/Reference/Manpages/man8/arp.8.html

GARP

Guard against gratuitous arp vulnerabilities for VOIP phones

http://www.uoverip.com/what-is-garp-gratuitous-arp-protection/

Cisco document with details about gratuitous arp

http://www.opus1.com/www/whitepapers/4500_ha.pdf