Linksys RV082 - Manual (Page 60)

51 Chapter 6: Set Up and Configure the Router
VPN Tab - Client to Gateway
10/100 8-Port VPN Router
Phase 2 Encryption: Phase 2 is used to create one or more IPSec SAs, which are then used to key IPSec sessions.
There are two methods of encryption, DES and 3DES. The Encryption method determines the length of the key
used to encrypt/decrypt ESP packets. DES is 56-bit encryption and 3DES is 168-bit encryption. Both sides must
use the same Encryption method. If users enable the AH Hash Algorithm in Advanced, then it is recommended to
select Null to disable encrypting/decrypting ESP packets in Phase 2, but both sides of the tunnel must use the
same setting.
Phase 2 Authentication: There are two methods of authentication, MD5 and SHA. The Authentication method
determines a method to authenticate the ESP packets. Both sides must use the same Authentication method.
MD5 is a one-way hashing algorithm that produces a 128-bit digest. If users enable the AH Hash Algorithm in
Advanced, then it is recommended to select Null to disable authenticating ESP packets in Phase 2, but both sides
of the tunnel must use the same setting.
Phase 2 SA Life Time: This field allows you to configure the length of time a VPN tunnel is active. The default
value is 3,600 seconds.
Preshared Key: Character and hexadecimal values are acceptable in this field, e.g. “My_@123” or
“4d795f40313233.” The max entry of this field is 30-digit. Both sides must use the same Pre-shared Key. It’s
recommended to change Preshared keys regularly to maximize VPN security.
Click the Save Settings button to save the settings or click the Cancel Changes button to undo the changes.