As usual, telnet will tell you something, presuming you do have a working SSH server somewhere.
At least with my setup, if you telnet to port 22 on the SSH server (xyzzy), SSH will reply with its version number: ---------------------------------------------------------------- Microsoft Windows 2000 [Version 5.00.2195] (C) Copyright 1985-2000 Microsoft Corp. C:\>telnet ---------------------------------------------------------------- Microsoft (R) Windows 2000 (TM) Version 5.00 (Build 2195) Welcome to Microsoft Telnet Client Telnet Client Build 5.00.99203.1 Escape Character is 'CTRL+]' Microsoft Telnet> open xyzzy 22 ---------------------------------------------------------------- SSH-2.0-OpenSSH_2.9.9p2 ---------------------------------------------------------------- I'd do this first on the same side of the firewall as the SSH server ... you could "open xyzzy 22" on the SSH server itself ... just to see that the SSH server is running and does, indeed, respond to a telnet like mine does. From the other side of the firewall, if you get the same response as you do from the same side of the firewall, I'd conclude that the firewall is letting SSH through. Incidentally, when I can't reach the SSH server or if can reach the machine but SSHd isn't running, I get the same response: Connecting To xyzzy...Could not open a connection to host on port 22 : Connect failed ----- Original Message ----- From: "Zalman Margareten" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, November 08, 2001 6:33 PM Subject: test SSH over through firewall > How can I test if our firewall will let through SSH? > VNC protocol (RFB) seems to be restricted. (I only see the sync sent and no > response) > > My options basically are to try to tunnel through a different protocol. I > only know about SSH and Tunnel (which is very slow due to public server's > limitation. > > Preferably would be, to be able to compile VNC to run through other > protocols and ultimately to run the java viewer (or active x control out > there) through HTTPS. (This seems to be what gotomypc does with the RDP > protocol. > > Any input would be appreciated. > --------------------------------------------------------------------- > To unsubscribe, mail [EMAIL PROTECTED] with the line: > 'unsubscribe vnc-list' in the message BODY > See also: http://www.uk.research.att.com/vnc/intouch.html > --------------------------------------------------------------------- --------------------------------------------------------------------- To unsubscribe, mail [EMAIL PROTECTED] with the line: 'unsubscribe vnc-list' in the message BODY See also: http://www.uk.research.att.com/vnc/intouch.html ---------------------------------------------------------------------
