SLUG Mailing List Archives
Re: [SLUG] SSH Port Forwarding
- To: Penguinillas <slug@xxxxxxxxxxx>
- Subject: Re: [SLUG] SSH Port Forwarding
- From: Malcolm Tredinnick <malcolm@xxxxxxxxxxxxxxxxx>
- Date: Fri Aug 17 19:11:02 2001
- User-agent: Mutt/1.2.5i
On Fri, Aug 17, 2001 at 06:42:58PM +1000, Jeff Waugh wrote:
> Just some random practical documentation written for work purposes, but
> foisted off to SLUG for the benefit of all. Manish Singh has also written
> one specifically for POP3, which you can find at his website:
> Using SSH Port Forwarding
> Let's not muck around:
> ssh -f -N -C -L <local-port>:<dest-host>:<dest-port> <gateway-host>
[...useful stuff snipped...]
There is one catch here to be aware of: if you are forwarding ports and
part of the connection is being masqueraded by another box, you may be
bitten by the timeouts on the masquerading (which can be adjusted).
I tend to have a long port forwarding setup running all day at work so
that I can collect mail and use irc and the like. It is useful to run
something like 'watch date' or even write a null byte every 30 seconds
or so just to keep the connection alive. The 'keepalive' option to ssl
should also have the same effect.
I'm not nearly as think as you confused I am!