The IPsec BIG-IP appliance must use IKEv2 for IPsec VPN security associations.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-266282	SRG-NET-000132-VPN-000460	F5BI-VN-300024	SV-266282r1024757_rule	2024-09-09	1

Description
To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types); organizations must disable or restrict unused or unnecessary physical and logical ports/protocols on information systems. Use of IKEv2 leverages denial of service (DoS) protections because of improved bandwidth management and leverages more secure encryption algorithms.

Description

To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types); organizations must disable or restrict unused or unnecessary physical and logical ports/protocols on information systems. Use of IKEv2 leverages denial of service (DoS) protections because of improved bandwidth management and leverages more secure encryption algorithms.

ℹ️ Check
From the BIG-IP GUI: 1. Network. 2. IPsec. 3. IKE Peers. 4. Click on the name of the IKE peer. 5. Verify "Version 2" is selected for "Version". If the BIG-IP appliance is not configured to use IKEv2 for IPsec VPN security associations, this is a finding.

✔️ Fix
From the BIG-IP GUI: 1. Network. 2. IPsec. 3. IKE Peers. 4. Click on the name of the IKE peer. 5. Select "Version 2" for "Version". 6. Click "Update".