HELP: How to block access to any site except those on a whitelist...

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HELP: How to block access to any site except those on a whitelist...

L3 Networker



On a certain Zone I need to block access to anything else but these URLs on a whitelist like this:


How can I do that most elegantly (I have a VM-100 with latest PanOS)


Thanks a lot for a quick reply on this, I have tried with URL filtering but to no avail...




L7 Applicator
  1. Configure and enable TLS decryption*:
  2. Create a custom URL category with your entries
  3. Create a security policy where you add your custom URL category directly into your rule (in the service tab)
  4. Do not create any other rule except a deny-all rule for that zone

*without TLS decryption you'll be only able to filter for the domainname but not



Thanks for the quick reply. 


I have actually tried to create a custom URL category as you suggest using create URL Filtering Profile / Override tab and entered the list of 'white' URL's in the left (Allow List) listbox. 


Secondly I added this profile to the Security policy for the Zone in question.  However, despite this, it unfortunately still allows traffic from any URL.


What am I missing..?

If you use your method: have you set every URL category to block?

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