External Dynamic Lists not working

[COMIP]

Hi all,

I have configured EDL of type Dynamic URL Lists with the next configuration

Then in URL filtering profile the ransomwaretracker_URL category is configured as BLOCK and the Profile is applied in the Security rule.

It seems configured correctly, I can list the EDL in CLI, but if I try to go to listed URL, it does not blocked.

PAN is working with 7.1.2 version.

Thanks,

Jordi

[bmorris1]

Hi Jordi,

Can you remove the 'https://' and try that? The documentation says not to use this prefix.

https://www.paloaltonetworks.com/documentation/71/pan-os/pan-os/policy/formatting-guidelines-for-an-...

Can you also check your traffic logs and security policies and see if the allowed traffic is hitting a rule above or below the rule you have configured?

Try this command to see if your EDL has populated ok:

> request system external-list show type url (EDL name)

You can add your list to a URL filtering profile and add that profile to the policy:

https://www.paloaltonetworks.com/documentation/71/pan-os/pan-os/url-filtering/use-an-external-dynami...

hope this helps,

Ben

[BPry]

Does it work as expected if you build a Deny rule with your EBL as the source address? This list is also 4992 entries which may be pushing the number of address objects you can push in one EBL. If you have anything less than a 3050, 3060, or a 5020 and up then you aren't going to be able to use this list. 

[TranceforLife]

It is a bit away from the original post/question but I recall a discussion here about the limit of entries :

On each Palo Alto Networks firewall platform, you can configure a maximum of 30 unique sources for external dynamic lists. A source is a URL that includes the IP address or hostname, the path, and the filename for the external dynamic list. The firewall matches the URL (complete string) to determine whether a source is unique.

Although the firewall does not impose a limit on the number of lists for a specific type of list, the following limits are enforced:

• IP address—The PA-5000 Series and the PA-7000 Series firewalls support a maximum of 150,000 total IP addresses; all other platforms support a maximum of 50,000 total IP addresses. No limits are enforced for the number of IP addresses per list.
• URLs and domain names—a maximum of 50,000 URLs and 50,000 domains are supported on each platform, with no limits enforced on the number of entries per list.

More info here:

https://live.paloaltonetworks.com/t5/Featured-Articles/DotW-Dynamic-Block-List-Limited-Number-of-Ent...

[BPry]

@TranceforLife I believe those limits only cover 7.1. I've always gone off of what's listed here https://live.paloaltonetworks.com/t5/Learning-Articles/Working-with-External-Block-List-EBL-Formats-... unless people actually point out that they are running 7.1.* since most people seem to be ignoring it for now.