telnet/ssh disconnects... Possible NAT teardown?

[Mike Klinke]

On Saturday 07 February 2004 00:28, Jeremy wrote:
> Ok, I'm at home now, and i tried telneting in from another computer
> on the network....   It works fine.  No disconnects.
>
> I'm using Road-Runner (Cable modem) to connect to the internet, the
> linux PC in question is the router (2 NIC cards, one to cable
> modem, other to LAN).
>
> Is it possible the cable modem is the cause?  I don't understand
> what could be wrong.
>
> -Jeremy
>
 
I don't know what kind of equipment you have either at home or work 
but it seems there are some routers that will give you the exact 
symptoms you are seeing.  For example, here is a conversation I ran 
accross where someone else is having what seems to be the same 
problem as you:

Regards,  Mike Klinke


============Begin of Original Message ============

I have just connected my new DI-764.

All seems fine, except my SSH sessions now get disconnected after 10 
or so minutes of inactivity (SSH is like an encrypted version of 
Telnet)

Prior to using the DI-764, I was using a switch connected to a PC 
running windows 2000 'internet connection sharing' and had no 
problems (idle sessions
never timed out).

===========================

From: <ustechs at dlink.com>
Subject: Case ID: PTS959026
Date: Wed, 7 May 2003 09:33:22 -0700

Dear Chris,

Products:   DI-764
Operating System:  Windows XP Pro

With our routers, idle sessions on any ports are dropped to free up 
resources for other connections that are active.  To keep your SSH 
connection open you
should configure your client to send some sort of keep alive so that 
there is always traffic going through the connection.

Thank you for networking with D-Link.

Sincerely,
Matt
D-Link Technical Support

============================