Iptables-script

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==Descriptioon==
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This script will reroute all LAN->WAN traffic that's normally blocked(router loopback prevention). It solves the issue where only LAN-users OR WAN-users can connect, but not both.
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==Source==
 
<source lang="bash">
 
<source lang="bash">
 
#!/bin/sh
 
#!/bin/sh

Revision as of 09:08, 4 May 2008

Descriptioon

This script will reroute all LAN->WAN traffic that's normally blocked(router loopback prevention). It solves the issue where only LAN-users OR WAN-users can connect, but not both.

Source

#!/bin/sh
wanip=`wget -qO- http://checkip.dyndns.org/ | sed 's|.* \([[:digit:]]*\.[[:digit:]]*\.[[:digit:]]*\.[[:digit:]]*\).*|\1|'`
lanip=`ifconfig  | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1}'`
echo "Rewriting iptables using $wanip(wan) and $lanip(lan)..."
iptables -t nat -A OUTPUT --dst $wanip -p tcp --dport 9000:9010 -j DNAT --to-destination $lanip
iptables -t nat -A OUTPUT --dst $wanip -p udp --dport 9000:9010 -j DNAT --to-destination $lanip
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