Re: Telnet session is broken.

It's important to understand that E-mail and web/http (which is what I assume you meant by 'Internet') do not attempt to hold a constant connection to the server.

Once Telnet connects to your server, it keeps the connection open for the entire session. It's sort of like making a telephone call, and never hanging up...

But E-mail or Web do not say connected. They make a separate connection each time they need something -- when they aren't exchanging data, they are disconnected from the server. It's like making a phone call, but hanging up after talking, and then re-calling the next time you have something else to say.

So if you have some sort of instability in your network (and that seems very likely here) then it'll be very obvious to a Telnet connection, but perhaps harder to detect with E-mail or Web.

As for a solution -- I doubt very much you'll solve this by changing software settings (though, you might make it less painful). I would try swapping out hardware components with known-good ones, one-by-one until you determine which component is faulty.





On 8/9/2012 4:07 AM, Tomasz Skorża wrote:

Hi guys

have you any idea what could be a reason for break telnet session?

When my users work's via VPN on AS400 (5250 session) their session is
break many times. They works, everythinks seems to be good, and suddenly
their sessions is reloaded to logon screen. Internet works, email works,
any other program not detect any problem - only 5250 session is reloaded.

When they works on LAN in office, everything is OK. And to be precise -
not every time we have problem with VPN and 5250, weeks, months is OK,
and a horrible for a few days, and again peace for weeks/months and
again a problem for few days ...

I think that problem is with the internet line in user's houses, but how
to be sure that this is not caused by VPN or AS400 itself?

Regards

Tomek