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Assessment Title
Rule Text
The IPSec VPN must be configured to use FIPS-validated SHA-2 at 384 bits or higher for Internet Key Exchange (IKE).
Description
Discussion Text
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.
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.
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