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route_traffic_across_two_interfaces

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route_traffic_across_two_interfaces [2013/07/07 20:36] deftespritroute_traffic_across_two_interfaces [2013/07/07 20:39] (current) deftesprit
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 +====== Route traffic across two interfaces ======
 +  * eth0 is the WAN
 +  * eth1 is the LAN
 +
 First, turn on ip forwarding:\\ First, turn on ip forwarding:\\
 ''echo 1 > /proc/sys/net/ipv4/ip_forward'' ''echo 1 > /proc/sys/net/ipv4/ip_forward''
  
 Next create iptables rules:\\ Next create iptables rules:\\
-''/sbin/iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE +''/sbin/iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE 
-/sbin/iptables -A FORWARD -i eth1 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT +/sbin/iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT 
-/sbin/iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT''+/sbin/iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT''
route_traffic_across_two_interfaces.txt · Last modified: 2013/07/07 20:39 by deftesprit