I know that t.120 is not nessary on 6.x but Tiwara doesn't mention PAN OS version so I thing is better add by hand t.120 because it will working on all versions.
You are correct. :smileyhappy: Here, we don't know the PAN OS version. PAN OS 5.0 and 6.0 onwards behaviour has been changed for few protocols . How to Check if an Application Needs to have Explicitly Allowed Dependency Apps
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