In the Net::OpenSSH case, you can use master_opts to pass a ProxyCommand configuration directive to the underlying SSH process. For instance: 
my $ssh = Net::OpenSSH($host,
                       master_opts => [-o => 'ProxyCommand=ssh foo nc 
+%h %p']);

[download]

Also, there is Net::OpenSSH::Gateway, that will find a way to open a SSH connection to a remote server through any combination of proxies and gateways (well, mostly).

I have not published it on CPAN yet because, even it is already functional, I have found some problems with its internal architecture that I want to solve first.

You can use it as follows: 

my $ssh = Net::OpenSSH->new($host,
                            gateway => { proxies => ['ssh://intermedia
+te_host',
                                                     'ssh://another_ho
+st',
                                                     'http://proxy:808
+0'] } );

[download]

In reply to Re: Establishing SSH tunnel and opening another SSH connection through it by salva
in thread Establishing SSH tunnel and opening another SSH connection through it by tehcook

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