Re: How to open nested SSH connection using perl

Hello gjoshi,

Although the Monks seems that they have provided you with many solutions, I would like to add a few references where you can get some information with samples of code, for easier implementation.

I had the same problem with you some time ago and I found the most common name is ssh multi hop, when describing what you are trying to achieve. So ref1 Transparent Multi-hop SSH and ref2 SSH Port Forwarding Through Multiple Hops (.ssh/config).

Update: I found also another link that also contains a Perl script that I assume does exactly what you want. Ref3 ssh tunnel via multiple hops.

Hope this helps.

Seeking for Perl wisdom...on the process of learning...not there...yet!

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Re^2: How to open nested SSH connection using perl by Anonymous Monk on Jul 13, 2015 at 06:42 UTC
Thanks thanos1983 With the help of the link you have given i started the port forwarding and tunneling process in the background and now I am able to do the SSH to host 2 in the script. thanks --girija	[reply]
Re^3: How to open nested SSH connection using perl by salva (Canon) on Jul 13, 2015 at 08:33 UTC
And so, port forwarding is enabled in the gateway server... `use Net::OpenSSH; my $sshA = Net::OpenSSH->new($serverA, user => $userA, password => $passwordA); my $proxy_command = $sshA->make_remote_command({tunnel => 1}, $serverB +, 22); my $sshB = Net::OpenSSH->new($serverB, user => $userB, password => $passwordB, proxy_command => $proxy_command); $sshB->system($cmd1); $sshB->system($cmd2); ...` [download]	[reply] [d/l]
Re^4: How to open nested SSH connection using perl by Anonymous Monk on Jul 13, 2015 at 11:34 UTC
Hi, I am getting error at: `my $sshB = Net::OpenSSH->new($serverB, user => $userB, password => $passwordB, proxy_command => $proxy_command);` [download] The error is: ssh: illegal option -- W usage: ssh -1246AaCfgkMNnqsTtVvXxY -b bind_address -c cipher_spec [-D bind_address:port] -e escape_char -F configfile -i identity_file [-L bind_address:port:host:hostport] -l login_name -m mac_spec -O ctl_cmd -o option -p port [-R bind_address:port:host:hostport] -S ctl_path [-w local_tun:remote_tun] user@hostname command ssh_exchange_identification: Connection closed by remote host	[reply] [d/l]
Re^5: How to open nested SSH connection using perl by salva (Canon) on Jul 13, 2015 at 13:10 UTC
Re^4: How to open nested SSH connection using perl by gjoshi (Sexton) on Jul 14, 2015 at 03:58 UTC
I am getting an error with this code -w option is not known option then we try to do `my $sshB = Net::OpenSSH->new($serverB, user => $userB, password => $passwordB, proxy_command => $proxy_command);` [download]	[reply] [d/l]
Re^5: How to open nested SSH connection using perl by salva (Canon) on Jul 14, 2015 at 07:03 UTC