I am really struggling with this.
My host (A) is behind a proxy/firewall (PF) and needs to connect to
host H.
The proxy has HTTP/FTP/SOCK proxy configured and I have no issue to configure in web browser, wget etc.
But when I use…
ssh H //to connect my host
I have no success to pass over the proxy. It seems to try to connect directly instead of going via the PF.
I am using Ubuntu 12.10.
Answers:
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Method 1
ssh has no native SOCKS client support, you need to use a ProxyCommand for that, for instance with socat:
ssh -o ProxyCommand='socat - SOCKS4A:myproxy:%h:%p,socksuser=nobody' <a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b6c3c5d3c4f6ded9c5c2">[email protected]</a>
Or use things like tsocks or dante‘s socksify to transparently use SOCKS for TCP traffic.
For SOCKS5 with socat 2:
ssh -o ProxyCommand='socat - "SOCKS5:%h:%p|tcp:myproxy:1080"' <a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c2b7b1a7b082aaadb1b6">[email protected]</a>
For HTTP Proxy CONNECT method with socat 2:
ssh -o ProxyCommand='socat - "PROXY:%h:%p|tcp:myproxy:80"' <a href="https://getridbug.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="bbcec8dec9fbd3d4c8cf">[email protected]</a>
Method 2
Check Corkscrew or Proxytunnel (and be aware that tunnelling SSH through a proxy be forbidden by local policies in some networks).
Method 3
For HTTP Proxy CONNECT method with socat,
ProxyCommand: socat - PROXY:myproxy:%h:%p,proxyport=myproxyport
All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0