GRE passthrough

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GRE passthrough

L1 Bithead



we have a site on an already trusted zone, we require to allow GRE traffic through the FW to enable our wireless access points communciate back to the wireless controller (aruba). I have created a custom security policy to allow this gre and papi (aruba protocol), however the GRE traffic is being dropped/denied by a default interzone policy. 


Any help is greatly appreciated. 


Community Team Member

Hi @DForde ,


I'm guessing that the traffic isn't exactly matching the security policy you've configured.

I'd verify the denied sessions and confirm if it exactly matches the security policy you've configured (zones, apps, etc).




LIVEcommunity team member, CISSP
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L0 Member

We currently have similar situation in VM series, PAN OS 9.0.11. some GRE gets thru, some gets dropped. have case about it, but takes time to get an engineer allocated.


All knowing... wishful thinking.
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