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V-205182

CAT II (Medium)

The DNS implementation must protect the authenticity of communications sessions for zone transfers.

Rule ID

SV-205182r1043178_rule

STIG

Domain Name System (DNS) Security Requirements Guide

Version

V4R2

CCIs

CCI-001184

Discussion

DNS is a fundamental network service that is prone to various attacks, such as cache poisoning and man-in-the middle attacks. If communication sessions are not provided appropriate validity protections, such as the employment of DNSSEC, the authenticity of the data cannot be guaranteed.

Check Content

Review the DNS server implementation to confirm zone transfers are signing using transaction signing (TSIG) shared key or via SIG(0) asymmetric cryptography public keys.

If the DNS server does not ensure integrity of zone transfers by TSIG or SIG(0) signing, this is a finding.

Fix Text

Configure the DNS server with transaction signing (TSIG) or SIG(0).