Netscreen 25 blocking Backup Server
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Netscreen 25 blocking Backup Server

From: <I__Alone@hotmail.com>
Date: Tue Nov 29 2005 - 15:37:48 CET

My company just purchased a disk based backup server (Unitrends DPU
2000) and it was installed on our LAN. Our LAN is connected to the
Trust Zone on a Netscreen 25 (Hardware Version 4010(0) Firmware
Version: 5.0.0 r 8.0). We have an SMTP Server connected to the DMZ
Zone on the same Netscreen 25.

When the Backup Server attempts to run a backup on the SMTP server, I
get a "partial connection check IP filters/firewall" error. Even with
a policy allowing all traffic between the 2 zones, I get this error.
Backups on servers in the Trust Zone run fine, so I've narrowed the
problem down to the netscreen.

The Backup Server uses 2 ports during operation, 1743 for a "control
channel" and 1744 for a "data channel". In viewing the error logs on
the back up server I find the following "Cannot connect to IP
XXX.XXX.XXX.XXX port 1743 Address is in use for channel 1743. <**
UNABLE TO BIND**> channel 1743.

What is the problem I am not seeing?

Any help would be appreciated. Thanks

Scott
Received on Sat Dec 3 04:18:43 2005