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Full Discussion: Ftp over SSH port forwarding
Special Forums IP Networking Ftp over SSH port forwarding Post 302770642 by hanyunq on Sunday 17th of February 2013 08:27:14 PM
Old 02-17-2013
Blade Ftp over SSH port forwarding

Hi,
I'm trying to connect ftp over ssh port forwarding to a sever(UnixC) behind FireWall(F/W). here's my env and question.

UnixA(SSH Client) ----F/W ---- UnixB(SSH Svr) ---- UnixC (FTP, 21)

UnixA wants to connect ftp service of UnixC via SSH port forwarding on UnixB.

Unix A, terminal
$ssh -L10021:UnixC:21 ID@UnixB

Logged in UnixB with SSH and from new session on UnixA I tried these commands below.

% telnet localhost 10021
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection to localhost closed by foreign host.
% ftp localhost 10021
Connected to localhost.
421 Service not available, remote server has closed connection
ftp>

Last edited by hanyunq; 02-18-2013 at 04:00 AM..
 

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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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