FQDN list doesnt work

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FQDN list doesnt work

L0 Member

Hey all,


I created a simple FQDN allow list and added google.com.  When I ping or curl google.com it only works sometimes.  Any ideas?


L3 Networker

Hello @SCalvanese,

I saw your post and have a few recommendations for you. You may want to look at it initially,


The maximum number of address objects you can resolve for an FQDN is increased from 10 of each address type (IPv4 and IPv6) to a maximum of 32 each. However, the combination of IPv4 and IPv6 addresses cannot exceed 512B; if it does, addresses that are not included in the first 512B are dropped and not resolved.


FQDN can also be helpful to control other services that don’t relate to web browsing like FTP, ssh, or any other service.


As a workaround, it is possible to configure the rule with  App-id [google-base] or by using a custom URL {google.com}, instead of using FQDN Object

 Thanks and Regards,

Edison K Benny
Product Specialist
Palo Alto Networks
*Don’t forget to accept the solution provided!




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