Security Basics mailing list archives

Re: Tunneling SMTP Traffic Via SSH Question


From: Dan Daggett <ddaggett () gmail com>
Date: Fri, 16 Jul 2004 14:12:38 -0600

        My apologies if this is a dumb question -- I'm attempting to
forward port 25 (SMTP) over SSH via Putty to an off-campus mail server.
Here are my connection parameters:

Session> Hostname (for SSH): mail.myserver.com          Port: 22
SSH > Preferred SSH protocol version: 2
Tunnels> Forwarded ports: localhost port 3225 to Destination
mail.myserver.com:25

When I try testing the connection in Outlook it returns an error saying
that Outlook cannot connect to the server. I know that out our outbound
WAN connection is blocking outbound port 25 traffic and I was hoping that
I could get around that via SSH forwarding. Firewalls can't peer into the
tunneled packet headers, can they? Help!

Did you change the outgoing mail port in Outlook to 3225?

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