Wireshark-dev: Re: [Wireshark-dev] How to avoid dissection based on port defined by a different
From: Dirk Jagdmann <[email protected]>
Date: Wed, 15 Dec 2010 21:21:25 -0800
> Sorry, I didn't make it clear that "what RFC that is" is "what RFC - if any - says that ephemeral ports should be handed out by default", not "what RFC explains what SHOULD and MUST mean".  *Is* there an RFC that describes well-known, registered, and ephemeral ports?  The first two of them are mentioned in the IANA port number assignment list:
> 	http://www.iana.org/assignments/port-numbers
> but that doesn't mention ephemeral ports.

There probably is not RFC to define that, and remember that different operating
systems have different default ranges and you can typically override those
defaults. See


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