Chapter 5 Quick Setup

•Remote Access (Client Role) - Choose this to connect to an IPSec server. This ZyWALL is the client (dial-in user) and can initiate the VPN tunnel.

5.5.5VPN Advanced Wizard - Phase 1 Settings

There are two phases to every IKE (Internet Key Exchange) negotiation – phase 1 (Authentication) and phase 2 (Key Exchange). A phase 1 exchange establishes an IKE SA (Security Association).

Figure 48 VPN Advanced Wizard: Phase 1 Settings

•Secure Gateway: If Any displays in this field, it is not configurable for the chosen scenario. If this field is configurable, enter the WAN IP address or domain name of the remote IPSec device (secure gateway) to identify the remote IPSec device by its IP address or a domain name. Use 0.0.0.0 if the remote IPSec device has a dynamic WAN IP address.

•My Address (interface): Select an interface from the drop-down list box to use on your ZyWALL.

•Negotiation Mode: Select Main for identity protection. Select Aggressive to allow more incoming connections from dynamic IP addresses to use separate passwords.

Note: Multiple SAs connecting through a secure gateway must have the same negotiation mode.

•Encryption Algorithm: 3DES and AES use encryption. The longer the key, the higher the security (this may affect throughput). Both sender and receiver must know the same secret key, which can be used to encrypt and decrypt the message or to generate and verify a message authentication code. The DES encryption algorithm uses a 56-bit key. Triple DES (3DES) is a variation on DES

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ZyWALL USG 50 User’s Guide