https://weberblog.net/the-ultimate-pcap/

Plenty of FCS. They all validate as good so you'll need to modify one to
get a "Bad".



On Thu, Jan 13, 2022 at 3:00 AM Maël Hörz <mh-ne...@web.de> wrote:

> Hi,
>
> As many of you probably know, lots of modern hardware/operating system
> combinations do not allow to capture Ethernet frames with an embedded
> FCS (checksum).
>
> I looked at several example capture files, but none so far seemed to
> contain an FCS.
>
> Does anybody here have a link to such a file, ideally with the higher
> layers being TCP or UDP, and maybe some where the FCS is wrong as well.
>
> (I know I could somehow patch it into an existing capture file, but I'd
> like a range of real world examples for developing/debugging/learning
> purposes.)
>
> Best regards,
> Maël Hörz
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