I am trying to set up a VPN with a Raspberry Pi, and the first step is gaining the ability to
ssh: Could not resolve hostname [hostname]: nodename nor servname provided, or not known
ssh user@[local IP]
Recently I came across the same issue. I was able to ssh to my pi on my network, but not from outside my home network.
I had already:
Also, I set up port forward on my router for hosting a web site and I had even port forward port 22 to my pi's static IP for ssh, but I left the field blank where you specify the application you are performing the port forwarding for on the router. Anyway, I added 'ssh' into this field and, VOILA! A working ssh connection from anywhere to my pi.
I'll write out my router's port forwarding settings.
(ApplicationTextField)_ssh (external port)_22 (Internal Port)_22 (Protocal)_Both (To IP Address)_192.168.1.### (Enabled)_checkBox
Port forwarding settings can be different for different routers though, so look up directions for your router.
Now, when I am outside of my home network I connect to my pi by typing:
Then I am able to input my password and connect.