The VPN gateway must use cryptographic algorithms approved by NSA to protect NSS when transporting classified traffic across an unclassified network.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-207262	SRG-NET-000565-VPN-002400	SV-207262r878134_rule		High

Description
Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The VPN gateway must implement cryptographic modules adhering to the higher standards approved by the Federal Government since this provides assurance they have been tested and validated. NIST cryptographic algorithms approved by NSA to protect NSS. Based on an analysis of the impact of quantum computing, cryptographic algorithms specified by CNSSP-15 and approved for use in products in the CSfC program, the approved algorithms have been changed to more stringent protocols configure with increased bit sizes and other secure characteristics to protect against quantum computing threats. The Commercial National Security Algorithm Suite (CNSA Suite) replaces Suite B.

Description

Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The VPN gateway must implement cryptographic modules adhering to the higher standards approved by the Federal Government since this provides assurance they have been tested and validated. NIST cryptographic algorithms approved by NSA to protect NSS. Based on an analysis of the impact of quantum computing, cryptographic algorithms specified by CNSSP-15 and approved for use in products in the CSfC program, the approved algorithms have been changed to more stringent protocols configure with increased bit sizes and other secure characteristics to protect against quantum computing threats. The Commercial National Security Algorithm Suite (CNSA Suite) replaces Suite B.

STIG	Date
Virtual Private Network (VPN) Security Requirements Guide	2024-04-09

Details

Check Text ( C-7522r803443_chk )
Verify the VPN gateway IKE Phase 1 and Phase 2 are configured to use cryptography that is compliant with NSA/CSS parameters when transporting classified traffic across an unclassified network. If the VPN gateway is not configured to use cryptography that is compliant with NSA/CSS parameters when transporting classified traffic across an unclassified network, this is a finding.

Fix Text (F-7522r803444_fix)
Configure the IPsec VPN Gateway Internet Key Exchange (IKE) to use cryptography that is compliant with NSA/CSS parameters when transporting classified traffic across an unclassified network.