Hi,
I'm trying to set up some filters on my gateway. Unfortunately the software
that I'm using is somewhat limited and requires that you match patterns in the
packets. In order to do this I have to make sure that the fields in the TCP
header are always in the same place. To do this the size of the IP header must be
fixed. I am therefore thinking of tossing all incoming IP packets that do not
have an IP header length of 5 words. This means that I will be tossing all
packets that contain options. Is there a problem with this? From what I've read,
you want to get rid of any packets that contain source routing options anyway,
are any other options common and desirable?
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Stephen Martin oO Fujitsu Systems Business of Canada, Inc.
smartin @
fujitsu .
ca Fujitsu Box 30
Phone: (416)512-0342 x3137 5140 Yonge St., Suite 2000
Fax: (416)512-0344 North York, Ontario, Canada. M2N 6L7
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