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SilentKernel/redirect_with_iptables.sh

Last active February 16, 2017 14:33
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Redirect one port to an other host with iptables
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redirect_with_iptables.sh
# Allowing ipv4 forward
echo 1 > /proc/sys/net/ipv4/ip_forward
# Redirect request response to source
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
# Redirect request on port 80 (TCP) to destionation's ip -> port 80
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to-destination xx.xx.xx.xx:80
# Allow forwarding of this port
iptables -A FORWARD -i eth0 -p tcp --dport 80 -j ACCEPT
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