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[ISSForum] Truncated packet seen (BISP)

Subject: [ISSForum] Truncated packet seen (BISP)
Date: Wed, 18 May 2005 11:04:27 +0300
Hello everybody.

I have a mysterious problem with BlackIce Server Protection (3.6.cnz) on a 
web server.

BlackIce keeps filling the blackd.log with the following event:

EX::Mon, 16 May 2005 16:14:17: Truncated packet seen. Not usable [1514:0:

The event seems to be related to outgoing packets. (This can be concluded 
from the fact that if I
fetch a page that takes a few seconds to compute, the errors have the 
timestamp of the returned
packets.) The value on the event line changes, and I think it is the frame 
size, event though I'm not
sure about that. 

The server is an IBM eSeries x225 (type 8649) running Windows 2003 Server 
Web Edition, IIS &
DotNet and is equipped with two Broadcom NetXtreme Gigabit Ethernet nics. 
The nics are
connected to separate networks (10/100 switches). The events appear on 
both so this is probably
not a broken nic issue.

The pages load fine from the web server so no problem there - the real 
problem is that the log file
gets huge in just a few days as the traffic grows and it fills the disk if 
left unnoticed.

I'm a little clueless here, wondering if this could this be a gigabit 
ethernet specific problem or other
network related syndrome. Could someone help me out?

-jm

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