railway does not natively support such things, and i have yet to do it myself or see someone else successfully achive it.

with that said, I would love to hear your use-case!

I basically have some microservices that I only want accessible from within railway's network and then having a public api to connect it up. The issue there is that if I needed to I can't manually call the microservices. Given that it uses wireguard, there should be a way to do this, even if it needs to be manual for example sshing into a machine on the network.

you would have to deploy a wire guard server into your project and hook it up that way, nothing to do with ssh