Ultrasurf Blocking Fail

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Ultrasurf Blocking Fail

Not applicable


I am suferring from many failed attempts trying to block ultrasurf. i added the application to a deny policy on the top of my policies, but users keeps jumping to the allow policy. i tried to block unkown UDP/TCP apps, but it failed too. the applcation itself can't be blocked even though i blocked all the dependecies. i tried to do it on 5050 and 5060 on both PAN 5.0.11 and PAN-OS 6.0 with the most updated licenses.can some one help. i guess it's considered a huge problem


L7 Applicator

L6 Presenter

There is an open case for that.It is not fixed yet.

Could you please update the case ID here.



Thanks for help

Engineering is still working on this BUG. Fix is not available yet.


Not applicable

the same story with kproxy and freegate !!!:smileyshocked:


Does it still happen with Decryption enabled and Block sessions that cannot decrypted ? With that my own tests show it cannot get through .... Also it's useless to say unknown-tcp and unknown-udp should be blocked ...

Hi ,

the unknown-tcp and unknown-udp are blocked but should the PA block them without the need of ssl decryption policy ( i mean if we have the right signature of the application) ?!

with ssl decryption you will identify the real app. inside the ssl, so if you see only unknown tcp/udp , after decryption it will not change.

But if you see ssl, then it may change.

Until last version of ultrasurf, we were able to block it without decryption.

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