Wireshark-bugs: [Wireshark-bugs] [Bug 12283] RPC traffic not recognized when port = 995

Date: Fri, 25 Mar 2016 01:24:41 +0000

Comment # 7 on bug 12283 from
Everything you say is correct, I will clarify more in future.

I just found it strange that we've been using Wireshark to look at NFS for
years, yet only since Wireshark 2.0 have we seen RPC+NFS decoded as other
protocols. Maybe we're just incredibly lucky but that seems unlikely.

(In reply to Guy Harris from comment #6)
> If you set the TCP preference "Try heuristic sub-dissectors first" to true,
> it recognizes the traffic in question as RPC.

Thanks, I will try this. Perhaps this default has changed between 1.x and 2.x,
exposing additional dissector bugs?

> However, it'd be better if there were a way to have the SSL dissector reject
> traffic that's "obviously" not SSL; whether that's possible to do without
> rejecting traffic that *is* SSL is another matter.  "Guessing protocols is
> hard, let's go shopping!"

True, at least there's already a sample capture "pop-ssl.pcapng" on the wiki
https://wiki.wireshark.org/SampleCaptures so should be easy to confirm.


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