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How to automate following TLS streams?

asked 2020-04-08 13:48:57 +0000

alajeb gravatar image

I have a huge pcap file and I want to follow each TLS stream in this file. Is there any way to do this by using a script?

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Not sure what your desired end result is. Do you want each TLS stream in a separate capture file?

grahamb gravatar imagegrahamb ( 2020-04-08 14:13:57 +0000 )edit

yes exactly

alajeb gravatar imagealajeb ( 2020-04-08 14:20:48 +0000 )edit

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answered 2020-04-08 14:36:47 +0000

grahamb gravatar image

This kind of thing generally needs multiple passes over the capture using tshark. First run a pass with a display filter to limit the output to the desired TLS traffic and add a T Fields -e tcp.stream argument to get a list of all tcp streams. Then use this list of streams to filter the original capture a single stream at a time and write the stream to a new file.

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Similar question using a script to extract multiple streams.

Chuckc gravatar imageChuckc ( 2020-04-08 15:29:08 +0000 )edit

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Asked: 2020-04-08 13:48:57 +0000

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Last updated: Apr 08