iptables rules created by libvirt

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I want to use NAT forwarding to forward some ports on my kvm host to my guests. There is a rule that libvirt is creating that rejects this traffic, and it gets recreated every time the network is updated.

 

-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable

 

My FORWARD policy is set to DROP, so I’d like to just remove this rule, but I don’t understand where it’s coming from.

 

I’m using kvm/qemu/libvirt on a RedHat 7.5 host.

 

It’s not clear to me whether anything is using any of the nwfilter rules. I haven’t added any, and I don’t see any referenced in any of my domain xml dumps or the network xml dump.

 

Can I get libvirt to stop adding this rule, or even any firewall rules and I’ll do it myself?

 

Thanks.

 

John Ratliff   | Pervasive Technology Institute | UITS | Research Storage - Indiana University | http://pti.iu.edu/

 

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