Iptables
From Hack Sphere Labs Wiki
IP Tables That Work
iptables --flush iptables --table nat --flush iptables --delete-chain iptables --table nat --delete-chain iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE iptables --append FORWARD --in-interface tun0 -j ACCEPT echo 1 > /proc/sys/net/ipv4/ip_forward
client
iptables --table nat --append POSTROUTING --out-interface bond0 -j MASQUERADE iptables --append FORWARD --in-interface eth1 -j ACCEPT
server
iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE iptables --append FORWARD --in-interface bond0 -j ACCEPT