strange variation on the standard 'multi-hop tunnel' question.
I'm working remotely at the minute, but have several 'incoming' automatic reverse shells connecting to a dedicated server. This dedicated server does not have X, but several of the 'incoming' shell servers do.
Basically, take three machines, laptop, server, client. Laptop and client have X, server does not. All three machines have password-less logins to each other (laptop > server, server > client) and can password-lessly establish a shell.
ssh -X user@server "ssh -X user@client gui-application" and, no suprise, I'm getting 'Cannot open Display" messages.
Does anyone know I nice one-liner for this kind of tunnelling?