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Old 07-11-2003, 01:31 AM   #1
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Registered: Jul 2003
Location: Brazil - São Paulo
Distribution: slackware
Posts: 2

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Post Redirect port with iptables

Hi all,

Here is my situation: i have a slackware box running a virtual machine under vmware. The virtual machine is a Windows 2003 server. In my server, i have 2 devices: eth0, vith the static/valid ip adress, and eth1 with my local network adress ( The virtual machine gets the following ip adress: and can ping the internet (i configure the virtual machine bridged with eth1, no problem).

What i want: redirect the traffic from port 80 of my linux (eth0, valid adress) to the virtual machine (

I've tryed the following solution:

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j DNAT --to
iptables -t nat -A POSTROUTING -s -p tcp -j SNAT --to <my valid ip adress>

But it doesn't work. I see this in the /proc/net/ip_conntrack :

tcp 6 111 SYN_SENT src=<ip_of_my_remote_box> dst=<ip_of_eth0(valid adress)> sport=42560 dport=80 [UNREPLIED] src= dst=<ip_of_my_remote_box> sport=80 dport=42560 use=1

Please... who can welp me? I spent 2 days in this problem

Thanx in advance... and sorry for the bad english

André Aun


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