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Repeating frames indicating "Ignored unknown Record"

asked 2024-05-16 14:57:29 +0000

kmnruser
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Forum, I am having issues wherein some of our users are getting disconnects from RDP sessions, and when that happens, they receive a graphical encryption error message from Windows. I ran a capture against one of the client connecting to the server in question. In the resultant trace file i keep seeing many recurring frames ( all are within TLS1.2 when filtered) over and over again.

Has anyone else seen this behavior before?

Thank you, KMNRuser

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answered 2024-05-20 05:49:46 +0000

flag of Netherlands

18528 ●9 ●339 ●255 https://SYN-b.it

"Ignored unknown Record" means Wireshark does not recognize the TLS record structure in the packet, this is usually seen when reassembly has been turned off in the protocol preferences, because TLS records spanning multiple packets will not be recognized any more. Have a look at the TCP and TLS protocol preferences to check your re-assembly settings (or create a new profile to get a default profile back).

This will most likely be benign and unrelated to the issue you're investigating...

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Asked: 2024-05-16 14:57:29 +0000

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Last updated: May 20