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V-228839

CAT II (Medium)

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

Rule ID

SV-228839r557387_rule

STIG

Palo Alto Networks ALG Security Technical Implementation Guide

Version

V3R4

CCIs

CCI-000381

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.