Explanation: Explanations:IKE (Internet Key Exchange) encryption scheme can be used with the following encryption algorithms: DES, 3DES, AES and CAST, for integrity it can use MD5 or SHA-1. You cant use FWZ-1 as an encryption algorithm with IKE because it's Checkpoint's proprietary an is only supported by the FWZ encryption scheme.See Page
7.13 of CCSE NG Official Courseware.(VPN1-FW1 Management II NG FP-1).