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V-214691

CAT II (Medium)

The Juniper SRX Services Gateway VPN IKE must use NIST FIPS-validated cryptography to implement encryption services for unclassified VPN traffic.

Rule ID

SV-214691r1056097_rule

STIG

Juniper SRX Services Gateway VPN Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-002450

Discussion

Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The network element must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.

Check Content

Verify all Internet Key Exchange (IKE) proposals are set to use AES256.

[edit]
show security ike

View the value of the encryption algorithm for each defined proposal.

If the value of the authentication method and other options are not set to use FIPS-validated values, this is a finding.

Fix Text

The following example commands configure the IKE (phase 1) proposal.

[edit]
set security ike proposal <P1-PROPOSAL> authentication-method rsa-signatures
set security ike proposal p1-proposal dh-group group19
set security ike proposal p1-proposal authentication-algorithm sha-384
set security ike proposal p1-proposal encryption-algorithm aes-256-cbc
set security ike proposal p1-proposal lifetime-seconds 86400