ZyXEL Communications ZyWALL 110 Series, User Manual, Page: 64 / 562

Chapter 4 Quick Setup Wizards
ZyWALL 110/310/1100 Series User’s Guide
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Rule Name: Type the name used to identify this VPN connection (and VPN gateway). You may use
1-31 alphanumeric characters, underscores (
_
), or dashes (-), but the first character cannot be a
number. This value is case-sensitive.
Application Scenario: Only the Remote Access (Server Role) is allowed in this wizard. It
allows incoming connections from the ZyWALL IPSec VPN Client.
Click Next to continue the wizard.
4.4.6 VPN Settings for Configuration Provisioning 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 47
VPN for Configuration Provisioning Advanced Wizard: Phase 1 Settings
• Secure Gateway: Any displays in this field because it is not configurable in this wizard. It allows
incoming connections from the ZyWALL IPSec VPN Client.
• 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 that uses a 168-bit key. As a result, 3DES is more secure than DES. It also
requires more processing power, resulting in increased latency and decreased throughput.
AES128 uses a 128-bit key and is faster than 3DES. AES192 uses a 192-bit key and AES256 uses
a 256-bit key.