How to forward network ports to systemd-nspawn containers
Published: Sunday, Aug 23, 2015 Last modified: Tuesday, Nov 26, 2024
Assuming you’ve setup ~/containers/ssh to start a sshd on boot:
sudo systemd-nspawn -D ~/containers/ssh -n -b -p 23:22
The magic is the --port
aka -p
switch that allows port forwarding from the host to the container.
So when I ssh -p 23 $host
I get to my ssh container, since it’s redirected to port 22. Sadly ssh does not send the hostname as part of the SSH protocol as discussed in http://serverfault.com/questions/34552/is-there-a-name-based-virtual-host-ssh-reverse-proxy.