FW: Reducing your Outbound Bandwidth
- From: "Hugo Caye" <Hugo@xxxxxxxxxxxxx>
- To: "Lista ISA Server \(E-mail\)" <ISAList@xxxxxxxxxxxxx>
- Date: Wed, 19 Sep 2001 16:55:07 -0300
I just created these files with 1 byte, the outgoing bandwidth droped a lot, as
the CPU usage of ISA server.
C:\WINNT\Help\iisHelp\common>dir 404*.*
Volume in drive Q has no label.
Volume Serial Number is 70FD-4023
Directory of Q:\WINNT\Help\iisHelp\common
19/09/2001 16:20 1 404-1.htm
07/05/2001 19:16 3.167 404-1.htm.old
19/09/2001 16:20 1 404b.htm
07/05/2001 19:16 3.252 404b.htm.old
4 File(s) 6.421 bytes
-----Original Message-----
From: Ben Koshy [mailto:ben@xxxxxxxxxxx]
Sent: terça-feira, 18 de setembro de 2001 18:02
To: NTBUGTRAQ@xxxxxxxxxxxxxxxxxxxxxx
Subject: Reducing your Outbound Bandwidth
I'm not sure if this is helpful to anyone, but we noticed massive
outbound traffic from many of our web servers. Upon closer inspection
we found that were getting massive amounts of IIS compromise requests,
but since we were patched we were just sending back 404 pages. The
default Windows 2000K IIS 404 page is about 3Kb. By re-pointing the
default 404 error page to a one byte file (it contained a space, or
optionally just put the text '404') it cut down our outbound traffic by
100-300 fold. I'm sure by editing other error pages you can further
reduce your outbound traffic.
Ben Koshy
ben@xxxxxxxxxxx
Technical Manager
W3 International Media Ltd.
http://www.w3media.com
PH:(604) 871-9899 x388
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