Palo alto not blocking a URL

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Palo alto not blocking a URL

L1 Bithead

Hi All,


I hope all are doing well.


I am trying to block a URL on palo alto firewall using custom URL category but firewall is not blocking the traffic and its passing through allow SSL/Web-browsing rule just below it.


This is the rule i created:



Rule 4 is allow rule to access websites, whereas rule 2 is used to block the URL -

I created custom URL category:



Traffic is not hitting rule 2 and traffic goes through rule 4. I created custom application as well by checking server name in wireshark in SNI field - Server Name: but it also not worked. rule number 3




I am decrypting SSL traffic as well.


Kindly advise.




L1 Bithead



I was able to block this successfully using the following setup.  I also included the wireshark debug for the site.  SNI (Server name indication) allows you to block without actually decrypting the traffic, since this field is unencrypted.






Have a good day,


Cyber Elite
Cyber Elite

@AnkurdattaTraffic logs and cli test commands may give you more clarity on why traffic is not matching expected security policy.



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