SSH to a VM with local IP using port forwarding on kvm/qemu server

Baequiraheal

12/10/23, 9:03 PM

I am struggling to find how I can ssh to a vm from outside just by port forwarding on a kvm server host. And is this possible at all?

VM IP - 192.168.122.10
Server public IP - 110.110.110.110 (for an example)

I'll open port 45 on both and if I try

ssh user@110.110.110.110 -p 45

it should ssh to the vm. Not sure if this is possible, maybe I just don't understand the idea correctly of port the port forwarding.

189

0 + 2

server

port-forwarding

kvm-virtualization

Christian Ehrhardt

1/23/24, 11:30 AM

You can establish something permanent, but if all you need is login you might as well use ssh port forwarding itself. To do so you'd log into the host and as long as that connection is active create a port on your workstation that will reach through that tunnel to a port on the VM. The benefit of that is that no one but you can even try to connect to the VM - but OTOH you might not want logins to you host in the first place. In the latter case you need to do something like https://www.debuntu.org/how-to-redirecting-network-traffic-to-a-new-ip-using-iptables/

Baequiraheal

1/24/24, 9:14 AM

@ChristianEhrhardt will give it a try. Thanks!

Elon Musk

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EN: SSH to a VM with local IP using port forwarding on kvm/qemu server

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