In addition to the HTTP proxy, Net::SSH also supports SOCKS proxies (both versions 4 and 5). Their usage is almost identical to the HTTP version (except SOCKS4 does not use passwords, just user names):

<pre>
  require 'net/ssh'
  require 'net/ssh/proxy/socks4'
  require 'net/ssh/proxy/socks5'

  proxy_host = 'my.proxy.com'
  proxy_port = 1080
  proxy_user = 'my-name'
  proxy_password = 'my-password'

  socks4 = Net::SSH::Proxy::SOCKS4.new( proxy_host, proxy_port,
              :user => proxy_user )

  socks5 = Net::SSH::Proxy::SOCKS5.new( proxy_host, proxy_port,
              :user => proxy_user,
              :password => proxy_password)

  Net::SSH.start( 'host', :proxy => socks4 ) do |session|
    ...
  end
</pre>