The Palo Alto Networks security platform must not enable the DNS proxy.

From Palo Alto Networks ALG Security Technical Implementation Guide

Associated with: CCI-000381

SV-77051r2_rule The Palo Alto Networks security platform must not enable the DNS proxy.

Vulnerability discussion

The Palo Alto Networks security platform can act as a DNS proxy and send the DNS queries on behalf of the clients. DNS queries that arrive on an interface IP address can be directed to different DNS servers based on full or partial domain names.However, unrelated or unneeded proxy services increase the attack vector surface and add excessive complexity to securing the device.

Check content

To check if DNS Proxy is configured: Go to Network >> DNS Proxy If there are entries in the pane, this is a finding.

Fix text

Do not configure and enable the DNS Proxy capability. Go to Network >> DNS Proxy If there are no entries in the pane, then this capability has not been enabled.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.