URL Filtering and DNS

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URL Filtering and DNS

Hi,

I'm trying to figure out if the URL Filtering detects domians in DNS requests and can take actions based on a domain in a DNS request (ie. blocking). I would like to move some of my DNS sinkhole activity to the Palo Alto 5020, but i'm unsure if this is a viable option with URL filtering.

Thanks in advance!

-sc

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L6 Presenter

Re: URL Filtering and DNS

Hi...URL Filtering is applied to web browsing traffic and not to DNS requests.  In PAN-OS 5.x, DNS botnet signatures are supported as part of the threat prevention license.  Thanks.

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Re: URL Filtering and DNS

Thanks Rmonvon,

Do you know if DNS sinkholing can be implemented on the Palos? Thanks!

-sc

L6 Presenter

Re: URL Filtering and DNS

As already mentioned the URL filtering is based on the the contents of the actual http request.

However in PA there is also a DNS-proxy feature which I think might be able to be used to sinkhole various domains, see some info in

The admin guide has a better description regarding settings of the dns-proxy feature.

In my opinion the best option is to use your own dns-servers (place in DMZ) and perform the sinkholing in them.

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