Check your TCP session timeout in the Stateful Inspection part of global
properties. If it says 600 seconds then it's happening exactly as it's set
up to: the session is idle for 10 minutes so FW1 closes the connection. If
you need it longer then you can set the global property to be higher.

I'd bet that the timeouts do not apply to connections originating from the
enforcement point, so when you telnet from your nokia box it stays up.

-GP

-----Original Message-----
From: Can2002 [mailto:[EMAIL PROTECTED]
Sent: 18 February 2004 14:44
To: [EMAIL PROTECTED]
Subject: [FW-1] Idle Telnet sessions being dropped by FW1


I'm having a problem where connections to a Telnet server on a DMZ port
appear to be dropped by FW-1 after an idle time of 10 minutes.

If I connect to the telnet server from a box on the same subnet, the
telnet session remains open for greater than 10 minutes, but as soon as I
connect from a subnet behind the firewall I see the 10 minute timeout.

I happen to have a Packetshaper connected to the external interface of
the firewall, so I tried connecting to it via telnet to see if it would
drop after 10 idle minutes; it did!  I logged onto the Nokia command line
and tried telnetting to the Packetshaper, and the session remained after
10 idle minutes.

For background, the FW is on NG_R55; however it was upgraded (using
upgrade_export/import) from 4.1.

Thanks in advance for any help!

Chris

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