Re: [tproxy] A general question on xt_socket

On Tue, 2008-10-28 at 18:22 +0530, Arun Srinivasan wrote:

Hi all,

A general question:

Say I have the following rules configured:

+++++++++++++++++++++++++++++ iptables -t mangle -N DIVERT iptables -t mangle -I PREROUTING -p tcp -m socket -j DIVERT iptables -t mangle -A DIVERT -j MARK --set-mark 0x1 iptables -t mangle -A DIVERT -j ACCEPT ++++++++++++++++++++++++++++++++++++

In which case can the tcp packets go without hitting the rule "iptables -t mangle -I PREROUTING -p tcp -m socket -j DIVERT"?

if there's no applicable local socket to the packet in question, then -m socket will not match. a socket is applicable if the associated tuple (local ip:port, remote ip:port) matches the packet. related ICMP packets also match. -- Bazsi