Jeff,
Hope this helps, this is what helped our shop with
dropped connections and as you will see was related
to our firewall.
The following is a copy of the e-mail to my team:
Maybe the following e-mail is old news, but I recall some discussion last week about dropped sessions and thought this worth forwarding.
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Chris Bipes
Sent: Thursday, August 09, 2012 8:40 AM
To: 'midrange-l@xxxxxxxxxxxx'
Subject: RE: Telnet session is broken.
The problem I had with telnet sessions dropping during VPN was a state full firewall that was part of the VPN client and a policy that was pushed from the VPN server not allowing you to connect if your VPN client firewall was not enabled. This blocked the probe from the iSeries telnet server to see if the session was still alive. The telnet server idle timeout is what triggers these probes.
Now if your client provides the keep a live packet during idle time, the telnet server will not send it's probe and your sessions will not timeout and disconnect.
Find you .ws file and add the following line to the file: KeepAlive=Y to activate the feature.
Here is a link to an article by Tom Van Looy on the Four Hundred Guru
http://www.itjungle.com/fhg/fhg061108-story01.html
--
Chris Bipes
Director of Information Services
CrossCheck, Inc.
-----Original Message-----
From: wdsci-l-bounces@xxxxxxxxxxxx [mailto:wdsci-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Young
Sent: Wednesday, September 19, 2012 11:56 AM
To: Rational Developer for IBM i / Websphere Development Studio Client for System i & iSeries
Subject: [WDSCI-L] RSE Connection dropped
All,
Using RDP 8.0.3.
Periodicly, when connected via VPN, I receive the following message in RSE:
TCP/IP network connection to the host was dropped. This could have been caused by a TCP/IP network outage or the IBM i server communication job ending. The previous operation has been canceled and the RSE connection xxx.xxx.xxx.xxx has been disconnected. Reconnect the RSE connection to continue working.
This message is displayed in a dialog box with the options OK, Reconnect and Details.
At the time the message is displayed, I am still connected on the VPN (using IBM Access 5250 emulator).
If I select the Reconnect option, the connection is re-established and I can continue to work.
This is very annoying.
Is there any setting I can change to eliminate this condition?
I have been receiving this message even when not using a VPN, but rather a direct IP connection to the remote system.
Thanks,
--
Jeff Young
Sr. Programmer Analyst
--
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