Keli's Mumbo Jumbo

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Proxy for SSH

Sometimes I need to ssh to my servers back at school when working in the company; Since the corporate proxy servers support HTTPS and don't block connections to port 22, ssh over proxy is possible, and here is what I did to make it work:

  • Install connect-proxy:
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    apt-get install connect-proxy
    The debian package description is pretty clear in describing its functions:
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    Description: Establish TCP connection using SOCKS4/5 and HTTP tunnelconnect-proxy is a simple relaying command to make TCP network connectionvia SOCKS or https proxies.It is mainly intended to be used as proxy command of OpenSSH.
  • Edit ~/.ssh/config and add the following lines (modify to suit your needs):
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    # not using proxy on lan
    Host 172.16.*
    ProxyCommand connect-proxy %h %p
    Host localhost
    ProxyCommand connect-proxy %h %p

    # mandatory to access the internet
    Host *
    ProxyCommand connect-proxy -H proxyserver:proxyport %h %p

Now when you run ssh to connect to servers not on your LAN, connect-proxy is used along transparently.