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Old 04-25-2013, 05:09 AM   #1
Registered: Mar 2005
Location: Germany
Distribution: Debian Wheezy
Posts: 42

Rep: Reputation: 0
Preconditions for TPROXY within ip6tables

Hi all,
I try to use TPROXY to forward a port to another, but it is simly not working.

If all ip6tables chains are empty (I know, it's a security risk, but it's only for testing on private network), and I make the following:

ip6tables -t mangle -A PREROUTING -i eth0 -p tcp --dport 80 -j TPROXY --on-port 8080

I assume accessing port 80 will be forwarded to an application listening to port 8080, but there is nothing.

I've done:
- modprobe xt_TPROXY
- echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
- tried in new Debian Wheezy and in Ubuntu 12.04 LTS

What did I forgot?

Old 04-26-2013, 06:37 AM   #2
Registered: Feb 2008
Distribution: Fedora,RHEL,Ubuntu
Posts: 661

Rep: Reputation: 66
Try tproxy table in place of mangle table

iptables -t tproxy

Old 04-27-2013, 06:09 AM   #3
Registered: Mar 2005
Location: Germany
Distribution: Debian Wheezy
Posts: 42

Original Poster
Rep: Reputation: 0
nope - it only generates an error:
"Table does not exist (do you need to insmod?)"
even with loaded xt_TPROXY module

I've trid it under Wheezy with ip6tables v1.4.14



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