I need to SSH into a server which is only accessible when I am connected to a VPN (PPTP). Using my Ubuntu 13.03 virtual machine, this works perfectly. First I connect to the VPN, then I ssh into the server. I have recently created a new Ubuntu 14.04 VM and am trying to use this instead. I have no problems connecting to the VPN, and my internet browser shows that I have an IP address on the remote site, but I can't connect to the server - ssh simply times out. Does anyone know how I diagnose and fix the problem ? Many thanks in advance.