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anti arp poisning for linux


arptables -P OUT DROP
arptables -P IN DROP
arptables -A IN -s 192.168.1.1 --source-mac 00:1D:0F:A6:73:20 -j ACCEPT
arptables -A OUT -d 192.168.1.1 --target-mac 00:1D:0F:A6:73:20 -j ACCEPT
arp -s 192.168.1.1 00:1D:0F:A6:73:20

http://abulmagd.blogspot.com/2008/08/arptables-and-arp-poisoningnetcut.html