Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I want to connect with my university and use a cluster. I connect via vpn with university.Now i want to connect with the cluster with ssh protocol. I have the ip,so in a terminal i write "ssh ip" (of the cluster) ssh: connect to host xxx.xxx.xxx.xxx port 22: Connection timed out

what may be wrong ?

share|improve this question
1  
Can you ping that ip? –  LnxSlck Mar 14 '12 at 11:46
    
i write ping 195.xx.xx.x. PING xxx.xxx.xxx.xx (xxx.xxx.xxx.xx) 56(84) bytes of data. after that nothing happens –  Danath Mar 19 '12 at 14:28
    
Your problem isn't with the port 22 or ssh, your problem is that you have no connection to that IP, maybe firewall problem or other thing. –  LnxSlck Mar 19 '12 at 21:48
add comment

1 Answer 1

This sounds more like a general networking issue than anything wrong with SSH itself. I'd try:

  • Pinging known hosts on the network
  • Using a tool like whatismyip.com to make sure you're really on the VPN
  • If they both work, trying to access other protocols on other servers in the remote network (most Universities have an intranet, for example).
  • Use IPs when possible. If you're using mDNS or a local DNS server (inside the remote network) this can mess around with things especially if your computer has cached an external DNS record (which doesn't line up with the VPN-internal version). I'm not explaining that particularly well, but try an IP if you're currently using a domain name.

If you know you're on the VPN properly and can access other network services, that's when it's time to ping your IT department an email. There could be a policy to segregate VPN connections from the cluster for security reasons and they're likely the people who will know about it.

share|improve this answer
    
yesterday it works!without do anything.Today the same problem! why? –  Danath Mar 19 '12 at 14:21
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.