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Reference Manual for the ProSafe Wireless 802.11g Firewall/Print Server Model FWG114P v2
8-12 Virtual Private Networking
201-10301-02, May 2005
SPI - Incoming
Enter a Hex value (3 - 8 chars). Any value is acceptable, provided the
remote VPN endpoint has the same value in its "Outgoing SPI" field.
SPI - Outgoing Enter a Hex value (3 - 8 chars). Any value is acceptable, provided the
remote VPN endpoint has the same value in its "Incoming SPI" field.
Enable Authentication Use this checkbox to enable or disable AH. Authentication is often not
used. In this case, leave the checkbox unchecked.
Authentication
Algorithm
If you enable AH, then select the authentication algorithm:
• MD5 is the default.
• SHA1 is more secure.
Enter the keys in the fields provided. For MD5, the keys should be 16
characters. For SHA-1, the keys should be 20 characters.
Key - In
Enter the keys.
• For MD5, the keys should be 16 characters.
• For SHA-1, the keys should be 20 characters.
Any value is acceptable, provided the remote VPN endpoint has the same
value in its Authentication Algorithm "Key - Out" field.
Key - Out Enter the keys in the fields provided.
• For MD5, the keys should be 16 characters.
• For SHA-1, the keys should be 20 characters.
Any value is acceptable, provided the remote VPN endpoint has the same
value in its Authentication Algorithm "Key - In" field.
Encapsulated Security
Payload (ESP) Configuration
ESP provides security for the payload (data) sent through the VPN tunnel.
Generally, you will want to enable both encryption and authentication
when you use ESP. Two ESP modes are available:
• Plain ESP encryption
• ESP encryption with authentication
These settings must match the remote VPN endpoint.
SPI - Incoming
Enter a Hex value (3 - 8 chars). Any value is acceptable, provided the
remote VPN endpoint has the same value in its "Outgoing SPI" field.
SPI - Outgoing Enter a Hex value (3 - 8 chars). Any value is acceptable, provided the
remote VPN endpoint has the same value in its "Incoming SPI" field.
Enable Encryption Use this checkbox to enable or disable ESP Encryption.
Table 8-1. VPN Manual Policy Configuration Fields
Field Description