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Date:      Sun, 20 Dec 1998 20:22:44 -0500 (EST)
From:      Antonio Bemfica <antonio@ngrdev.ic.gc.ca>
To:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Port redirection
Message-ID:  <Pine.GSO.3.96.981220201732.5133A-100000@ngrdev.ic.gc.ca>
In-Reply-To: <367CF1DC.2BE9A41C@tdx.co.uk>

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On Sun, 20 Dec 1998, Karl Pielorz wrote:

> Antonio Bemfica wrote:
> > 
> > On Sat, 19 Dec 1998, Jaime wrote:
> > 
> > > [...] If you're running 2.x, you'll have to either upgrade or write a
> > > program which acts as a daemon on port 23 and then reconnects incomming
> > > connections to 8000.
> > 
> > I think TCP wrappers can do that.
>
> Netcat (in the ports, i.e. /usr/ports/net/netcat) certainly can - we
> use it [...] The only problem is - once you relay port 23 onto port
> 8000 - you coulnd't telnet to the box, so make sure you have ssh or
> move the 'real telnet' to a different port ;-) 

If you compile TCP Wrappers with PROCESS_OPTIONS, you will be able to run
a different server on the same port depending on the host (or user@host)
who is connecting to it [at least that's what I understood from the man
page (man hosts_options, look for the 'twist' option)].

Antonio



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