Benefits of using DNS Proxy?

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Benefits of using DNS Proxy?

L4 Transporter

Are there any Security benefits to using the current implementation of DNS proxy on the PAN? I have seen on the ver 6.0, a new feature called DNS sinkhole, but I don't think it will require the DNS proxy feature. Watchguard checks DNS headers and a couple of other criteria for DNS based attacks, but I don't see anything in PAN documentation that says the PAN Firewall does anything when used a DNS proxy.

Any thoughts?

The inherent vice of capitalism is the unequal sharing of blessings; the inherent virtue of socialism is the equal sharing of miseries.

L6 Presenter

Cache, static entries, etc... But not the one like DNS sinkhole, it is different and it is a security feature..

L7 Applicator

You are correct, the dns proxy feature is a performance feature and not a security feature.

Steve Puluka BSEET - IP Architect - DQE Communications (Metro Ethernet/ISP)
ACE PanOS 6; ACE PanOS 7; ASE 3.0; PSE 7.0 Foundations & Associate in Platform; Cyber Security; Data Center

L4 Transporter

If FW is set up  DNS proxy configuration, fw needs to have U-Turn NAT configuration?

May I disable U-Turn NAT rules?


U-turn - no, but You need policy like:


to allow DNS traffic



if you use fqdn you'll not need.bu if you'll access with ip, you will.

L4 Transporter


the DNS sinkholing is not implemented by the DNS PROXY.

the DNS sinkholing is implemented by antispyware profile


L3 Networker

I think it depends on your policy.  If you do not have a rule that dictates what the valid upstream resolvers are, the proxy could provide that same benefit.  It could also help with split dns issues.



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