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HTTP && TCP filter

asked 2020-10-10 14:21:10 +0000

niralan gravatar image

updated 2020-10-10 14:21:38 +0000

Why using this filter returns packets with HTTP and OCSP protocol? I thought the AND operator returns anything only when both conditions are true?

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answered 2020-10-10 16:09:34 +0000

Chuckc gravatar image

There is a sample capture attached to this issue (#15674)

If you look at View-> Protocol Hierarchy it shows Online Certificate Status Protocol under Hypertext Transfer Protocol

Or select one of the OCSP packets, expand Frame and look at

[Protocols in frame [truncated]: eth:ethertype:ipv6:tcp:http:ocsp:ocsp:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509sat:x509ce:x509ce:ocsp:pkix1implicit]

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This was only implied, but for clarification Wireshark display filters are used to include or exclude each packet depending on whether it has the fields or field values specified in the filter, thus a filter of HTTP will include all packets containing protocols that an on top of http as all such packets contain the "field".

grahamb gravatar imagegrahamb ( 2020-10-11 08:56:38 +0000 )edit

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Asked: 2020-10-10 14:21:10 +0000

Seen: 728 times

Last updated: Oct 10 '20