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Full Discussion: Tunnel using SSH
Top Forums UNIX for Advanced & Expert Users Tunnel using SSH Post 302993469 by lobsang on Friday 10th of March 2017 02:56:03 AM
Old 03-10-2017
Linux Tunnel using SSH

I am not clear with the part of concept of Tunneling using ssh.
Code:
ssh -f -N -L 1029 192.168.1.47:25 james@192.168.1.47

I found out that above code works for me . but didn't quite well understood how ti works and need to ask you guys some questions.
since we are using tunnel through ssh why we need to use other port above 1024 to channel unencrypted protocol.

my logic is like a tunnel drill between server and client using SSH. And every unencrypted protocol can pass without any restriction . but on reaching destination , it will have to connect using its port number . So i didn't quite get why we need that unprivileged port no . Any help would be highly appreciated

Last edited by Scrutinizer; 03-10-2017 at 04:01 AM.. Reason: doubts -> questions
 

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SSH-ARGV0(1)                                                BSD General Commands Manual                                               SSH-ARGV0(1)

NAME
ssh-argv0 -- replaces the old ssh command-name as hostname handling SYNOPSIS
hostname | user@hostname [-l login_name] [command] hostname | user@hostname [-afgknqstvxACNTX1246] [-b bind_address] [-c cipher_spec] [-e escape_char] [-i identity_file] [-l login_name] [-m mac_spec] [-o option] [-p port] [-F configfile] [-L port:host:hostport] [-R port:host:hostport] [-D port] [command] DESCRIPTION
ssh-argv0 replaces the old ssh command-name as hostname handling. If you link to this script with a hostname then executing the link is equivalent to having executed ssh with that hostname as an argument. All other arguments are passed to ssh and will be processed normally. OPTIONS
See ssh(1). FILES
See ssh(1). AUTHORS
OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH. Markus Friedl contributed the support for SSH protocol versions 1.5 and 2.0. Jonathan Amery wrote this ssh-argv0 script and the associated documentation. SEE ALSO
ssh(1) Debian Project September 7, 2001 Debian Project
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