The IPSec VPN must be configured to use FIPS-validated SHA-2 at 384 bits or higher for Internet Key Exchange (IKE).
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-207223 | SRG-NET-000230-VPN-000780 | SV-207223r916152_rule | CCI-001184 | high |
| Description | ||||
| Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Although allowed by SP800-131Ar2 for some applications, SHA-1 is considered a compromised hashing standard and is being phased out of use by industry and government standards. Unless required for legacy use, DOD systems should not be configured to use SHA-2 for integrity of remote access sessions. This requirement is applicable to the configuration of IKE Phase 1 and Phase 2. | ||||
| STIG | Date | |||
| Virtual Private Network (VPN) Security Requirements Guide | 2024-12-19 | |||
Details
Check Text (C-207223r916152_chk)
Verify the IPsec VPN Gateway uses IKE with SHA-2 at 384 bits or greater to protect the authenticity of communications sessions.
If the IPsec VPN Gateway is not configured to use IKE with SHA-2 at 384 bits or greater to protect the authenticity of communications sessions, this is a finding.
Fix Text (F-7483r916151_fix)
Configure the IPsec VPN Gateway to use IKE with SHA-2 at 384 bits or greater to protect the authenticity of communications sessions.