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dsabanin/port_redirect.sh

Created May 23, 2014 14:55
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Script for setting up redirect for a local port to a remote host's port (root or sudo needed)
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port_redirect.sh
#!/bin/sh
TARGET_HOST=9.9.9.9
TARGET_PORT=22
PROXY_PORT=23
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport $PROXY_PORT -j DNAT --to $TARGET_HOST:$TARGET_PORT
iptables -t nat -A PREROUTING -p tcp --dport $PROXY_PORT -j DNAT --to $TARGET_HOST:$TARGET_PORT
iptables -t nat -A POSTROUTING -p tcp -d $TARGET_HOST --dport $TARGET_PORT -j MASQUERADE
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