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Date: Mon, 3 Dec 2012 17:23:38 +0400
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Subject: Re: redirect incoming telnet to com port
From: Ilya Kazakevich <kazakevichilya@gmail.com>
To: saeedeh motlagh <saeedeh.motlagh@gmail.com>
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hello everybody

>
> i have freebsd8.2.  i want to redirect incoming telnet from telnet port to
> a com port. i mean if somebody telnet to my system with a specific port (or
> 22 which is default telnet port), connect to com port and can talk to modem
> (something like cisco).
>
> is it possible or not?
>
> any hints or comments are really appreciated.
>

Are your talking about "reverse telnet" cisco functionality?

Try to use comserv:
http://www.freebsd.org/cgi/ports.cgi?query=comserv&stype=all

".Additionally, comservd can serve up local serial ports to remote
systems..."

Ilya.