The DNS server implementation must authenticate the other DNS server before responding to a server-to-server transaction.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-205203	SRG-APP-000394-DNS-000049	SV-205203r879767_rule		Medium

Description
Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Device authentication is a solution enabling an organization to manage devices. It is an additional layer of authentication ensuring only specific pre-authorized devices can access the system. This requirement applies to server-to-server (zone transfer) transactions only and is provided by TSIG/SIG(0), which enforces mutual server authentication using a key that is unique to each server pair (TSIG) or using PKI-based authentication (SIG(0)).

Description

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Device authentication is a solution enabling an organization to manage devices. It is an additional layer of authentication ensuring only specific pre-authorized devices can access the system. This requirement applies to server-to-server (zone transfer) transactions only and is provided by TSIG/SIG(0), which enforces mutual server authentication using a key that is unique to each server pair (TSIG) or using PKI-based authentication (SIG(0)).

STIG	Date
Domain Name System (DNS) Security Requirements Guide	2023-06-12

Details

Check Text ( C-5470r392522_chk )
Review the DNS server implementation configuration to determine if the DNS server authenticates the other DNS server before responding to a server-to-server transaction. If the DNS server does not authenticate the other DNS server, this is a finding.

Fix Text (F-5470r392523_fix)
Configure the DNS server to authenticate the other DNS server before responding to a server-to-server transaction.