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You can use Net::OpenSSH and Net::OpenSSH::Gateway. The later is not on CPAN yet because I am not completely happy with its internals, but otherwise it is completely functional.

Once installed, you can run:

my $ssh = Net::OpenSSH->new($target, gateway => { proxies => ['ssh://serverA', 'ssh://serverB'] +}); my $output = $ssh->capture('ls');
Under the hood it uses several tricks to find a way to jump from one hop to the next, as creating tunnels or running any of socat, netcat or perl.

In reply to Re: Multilevel SSH by salva
in thread Multilevel SSH by davidsnt

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