Custom extensions for file blocking

scott.jones — Thu, 14 Mar 2019 17:33:52 GMT

I've got our PA setup to block file types that are risky. But, I've found a problem with Symantec LiveUpdate pulling down the update files it needs. It uses a couple odd file types that aren't in the list as types that I can allow for a profile. Is there a way to add custom file extensions that I can use to match against, or is there another way to go about only allowing the specific file types that Symantec uses? I was looking for an app-id that I could match against for Symantec or LiveUpdate, but there doesn't appear there is an ID for that, so any ideas are appreciated.

Re: Custom extensions for file blocking

Raido_Rattameister — Thu, 14 Mar 2019 18:22:26 GMT

Do you see traffic blocked?

If Palo does not identify those files what do you see in logs?

Check URL filtering log to identify where Symantec downloads updates.

Most likely liveupdate.symantecliveupdate.com and liveupdate.symantec.com

Create custom URL category (with liveupdate.symantecliveupdate.com and liveupdate.symantec.com in it).

Create Security Policy that allows download of any file from this custom URL category for test.

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Custom extensions for file blocking

Re: Custom extensions for file blocking