Configure iptables with a bridge and static IPs

Posted by Andrew Koester on Server Fault See other posts from Server Fault or by Andrew Koester
Published on 2011-01-18T03:44:41Z Indexed on 2011/01/18 3:54 UTC
Read the original article Hit count: 243

Filed under:

linux

|

ubuntu

|

iptables

|

bridge

|

libvirt-kvm

I have my server set up with several public IP addresses, with a network configuration as follows (with example IPs):

eth0
 \- br0 - 1.1.1.2
     |- [VM 1's eth0]
     |    |- 1.1.1.3
     |    \- 1.1.1.4
     \- [VM 2's eth0]
          \- 1.1.1.5

My question is, how do I set up iptables with different rules for the actual physical server as well as the VMs? I don't mind having the VMs doing their own iptables, but I'd like br0 to have a different set of rules. Right now I can only let everything through, which is not the desired behavior (as br0 is exposed).

Thanks!

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