Kerberos: UDP vs. TCP


(Andreas Kopplinger) #1

We had some issues with Kerberos and remote users. Switching from UDP to TCP helped:
More information here:
https://support.microsoft.com/en-us/help/244474/how-to-force-kerberos-to-use-tcp-instead-of-udp-in-windows


(Andreas Kopplinger) #2

(Scott Bullock) #3

Hi Andreas,
Can you please describe some of the issues you encountered to the community can know what to look out for?

Cheers,

Scott-


(Andreas Kopplinger) #4

Hi,
the problem was that Kerberos UDP packets were lost. With the the links I have provided in the threat, we were able to solve this, as we can now force TCP.
Cheers,
Andreas


(Scott Bullock) #5

Thank you for sharing, I’m sure someone will find this useful.