Jump hosts

Some servers can only be reached through another one — a bastion or jump host. Termini connects to the bastion first and opens the connection to the target through it, like OpenSSH’s ProxyJump.

Setting one up

1. Save the bastion as a host of its own.
2. Edit the target host, and under Connect through pick the bastion instead of Directly.
3. Connect to the target as usual.

Each host signs in with its own method: the bastion and the target can use different users and keys.

How it behaves

• One connection per bastion. Two targets behind the same bastion share one connection to it.
• Closed with the last. When you close the last session that uses a bastion, its connection closes too.
• Clear errors. If either hop fails, the error names both hosts, so you know which one refused.
• No loops. The picker won’t let A go through B and B through A.
• Deleted jump host. If you delete a host another one goes through, connecting explains that its jump host is gone and offers to clear it.

From your SSH config

Importing ~/.ssh/config links each ProxyJump host to its imported bastion for you.