There is a -J option in recent ssh! `ssh -J machine1,machine2 machine3` It saves a lot of hassle with manually building the tunnels. The corresponding config op

There is a -J option in recent ssh! `ssh -J machine1,machine2 machine3` It saves a lot of hassle with manually building the tunnels. The corresponding config option is ProxyJump. However, I thought people were using agent when they really needed the "one remote computer logs into another" feature - e.g. for direct file transfer. I have never used SSH agent in my life, though - when I need something like that, I just generate fresh SSH keys on the remote computer.