IKE Protection Profile - CLI

Internet Key Exchange (IKE) is the protocol used to set up a security association (SA) in the IPsec protocol suite. IKE uses a Diffie–Hellman key exchange to set up a shared session secret from which the cryptographic keys are derived. Diffie-Hellman (DH) groups determine the strength of the key used in the key exchange process. 

This Key Management Protection Profile specifies the encryption algorithm, the maximum SA lifetime, and other SA conditions, for the peer. These properties are linked to each IKE peer that is provisioned with this profile.

A user can specify one or more DH groups from the SBC supported list of DH groups.

• The SBC lists the configured DH groups in the descending order of their bit size while negotiating the protection mechanisms as initiator role as part of the SA payload.
• As responder, the SBC selects the first DH group in the list offered by peer, which is supported and enabled on SBC side.
• The SBC uses DH Group-2 as default if the user does not specify any group. 

 The SBC Core supports the following DH groups: 

• DH Group 1: 768 bit
• DH Group 2: 1024 bit (default)
• DH Group 5: 1536 bit
• DH Group 14: 2048 bit

See IPsec for Signaling for an in-depth feature description.

See IPsec Peer - CLI to configure IPSec peer for the IKE protocol version using CLI.

Command Syntax

% set profiles security ikeProtectionProfile <profile name> 
	algorithms 
		dhGroup <modp768 | modp1024 | modp1536 | modp2048>
		encryption <_3DesCbc | aesCbc128>
		integrity <hmacMd5 | hmacSha1 | hmacSha256>
	dpdInterval <interval #>
	pfsRequired <disabled | enabled>
	saLifetimeTime <1200-1000000 seconds> 

Command Parameters

The Key Management Protection Profile parameters are as shown below:

Command Example

% set profiles security ikeProtectionProfile IkeProfile algorithms dhGroup modp2048 encryption aesCbc128 integrity hmacSha256
% set profiles security ikeProtectionProfile IkeProfile dpdInterval 40 pfsRequired enabled saLifetimeTime 14400

% show profiles security ikeProtectionProfile IkeProfile
saLifetimeTime 14400;
algorithms {
    encryption aesCbc128;
    integrity  hmacSha256;
    dhGroup    modp2048;
}
dpdInterval    40;
pfsRequired    enabled;