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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-228839	PANW-AG-000037	SV-228839r557387_rule		Medium

Description
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.

STIG	Date
Palo Alto Networks ALG Security Technical Implementation Guide	2021-07-02

Details

Check Text ( C-31074r513812_chk )
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 (F-31051r513813_fix)
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.