Fwd: Linux bridge for route

tingwei liu <tingw.liu@xxxxxxxxx> · Fri, 17 Jan 2014 17:14:34 +0800

Dear all,

       There is  a question has puzzled me for a long time.
       You can find the topology from attachment.

       Normal traffic is:

               PC(192.168.1.8)--->Bridge(eth0)--->Bridget(eth1)--->NAT
server-->switch--->Server(192.168.5.3)

       Now I want the ssh traffic like this:
              PC(182.168.1.8)--->Bridge(eth0)--->eth2--->NAT
server--->switch--->Server(192.168.5.3)

      What I have done on LINUX Server:
              #net.bridge.bridge-nf-call-iptables = 1
              #iptables -t nat -A POSTROUTING -s 192.168.1.8 -p tcp
--dport 22 -j SNAT --to-source 192.168.5.2

      I have find the rule matched through command "iptables -t nat
-nvL", but the packets doesn't sent to 192.168.5.3.
      and "tcpdump -i eth2 tcp port 22" can not capture any packet!

Thanks very much!
Attachment:
topology.jpg

Description: JPEG image