Reverse Telnet

[David Mandala]

Ah, thats what he wants to do. Yes of course you can do that. Once you
are logged in to your Linux system just run minicom and attach to the
modem. Unless minicom is already configured you'll want to run it as
root the first time. You also may need to configure your serial ports to
allow their use by non-root users. Generally speaking there are two ways
to accomplish that. You can chmod the port permissions to something like
666 or you can add people to the group that controls the com ports. On
my system that is the uucp group. On my system since I didn't feel like
adding everyone to the uucp group I chose to do:

]# chmod 666 /dev/ttyS[01]
]# minicom -s

Once you have configured minicom once then you can run it as yourself.

]$ minicom

The normal modem devices on an x86 style box are /dev/ttyS0 and
/dev/ttyS1. At one place I worked we had a specialty communications card
which had 128 serial ports which we had connected to modems for dial in.
We kept a few for dial out and we routinely used minicom to
interactively configure the modems.

Hope that helps.

Cheers,

Davidm 

On Thu, 2003-02-13 at 10:22, Don Calfa wrote:
> If you have an IP session to a Cisco router, you attach a session to the 
> serial port and change modem settings, port speed, number of rings, dial 
> back, etc... and save it to NVRAM on the modem.
> 
> I'm guessing you could connect to /dev/{port of modem}?
> 
> 
> 
> davidm@them.com wrote:
> 
> >Sorry still don't understand what you want to do, however most anything
> >you can do with a Cicso you can do under Linux.
> >
> >If you could describe what you want to to might be able to help. 
> >
> >On Thu, 2003-02-13 at 09:47, Bruner, Andrew wrote:
> >  
> >
> >>On a cisco router you can reverse telnet to a modem to configure it with AT
> >>commands.
> >>-Andrew
> >>
> >>
> >>-----Original Message-----
> >>From: David Mandala [mailto:davidm@them.com]
> >>Sent: Thursday, February 13, 2003 9:21 AM
> >>To: Plug
> >>Subject: Re: Reverse Telnet
> >>
> >>
> >>Not sure I understand what you want to do?
> >>
> >>
> >>
> >>On Thu, 2003-02-13 at 07:52, Bruner, Andrew wrote:
> >>    
> >>
> >>>Is it possible to reverse telnet to a modem in linux?
> >>>-Andrew
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-- 
David IS Mandala
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