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Full Discussion: Wildcards when using awk -F
Top Forums UNIX for Beginners Questions & Answers Wildcards when using awk -F Post 303005344 by fgarvis88 on Tuesday 17th of October 2017 07:56:42 AM
Old 10-17-2017
Right, I'm using -F so I can filter on particular fields. This is a SecOnion VM so I'm trying to use some sort of wildcard combo to filter certain octets of an IP address of web traffic.

For instance I'm looking at http traffic but I want to see 5 or 6 fields so I can focus on who is talking to who. I want to filter out a range of IP's that take up a bulk of the traffic so I can focus on the onesies and twosies easier.

Last edited by rbatte1; 10-17-2017 at 10:12 AM.. Reason: Added ICODE tags
fgarvis88
 

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Traffic control index filter(8) 				       Linux					   Traffic control index filter(8)

NAME
tcindex - traffic control index filter SYNOPSIS
tc filter ... tcindex [ hash SIZE ] [ mask MASK ] [ shift SHIFT ] [ pass_on | fall_through ] [ classid CLASSID ] [ action ACTION_SPEC ] DESCRIPTION
This filter allows to match packets based on their tcindex field value, i.e. the combination of the DSCP and ECN fields as present in IPv4 and IPv6 headers. OPTIONS
action ACTION_SPEC Apply an action from the generic actions framework on matching packets. classid CLASSID Push matching packets into the class identified by CLASSID. hash SIZE Hash table size in entries to use. Defaults to 64. mask MASK An optional bitmask to binary AND to the packet's tcindex field before use. shift SHIFT The number of bits to right-shift a packet's tcindex value before use. If a mask has been set, masking is done before shifting. pass_on If this flag is set, failure to find a class for the resulting ID will make the filter fail and lead to the next filter being con- sulted. fall_through This is the opposite of pass_on and the default. The filter will classify the packet even if there is no class present for the resulting class ID. SEE ALSO
tc(8) iproute2 21 Oct 2015 Traffic control index filter(8)
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