WireShark – IP Exclusion

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It seems that my WireShark usage is totally intermittent.  And, as expected, when I go to use it again I totally forget the syntax for filtering the display.  I was doing some testing today and noticed that a filter I had wasn’t working as expected.  I was trying to do this…

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Basically, WireShark was telling me that my filter wasn’t really going to work.  They word it by saying ‘unexpected results’ but I was still getting traffic from 10.20.30.41.  After a little googling I came across this post by Laura Chappell.

http://laurachappell.blogspot.com/2010/12/filtering-out-traffic-by-ip-address.html

Bingo! 

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I just had the syntax wrong.  Her explanation of why my other filter wasn’t working was just as interesting as the solution.

Thanks!

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