Epson VIGOR 3300 - Manual (Page 101)

Vigor3300 Series User’s Guide 97
Click Advanced tab. The following page of default configuration will be shown:
Key Lifetime (main) The rekey-renegotiated period of the IKE Phase1 keying
channel of a connection. The acceptable range is from 5 to 480
minutes (8 hours).
Proposal (main) The proposed encryption and/or authentication algorithms for
IKE Phase1 negotiation. There are several proposals offered in
this page with combination of three types of algorithms:
Encryption algorithms - DES/3DES/AES
Authentication algorithms - MD5/SHA1
DH (Diffie-Hellman) Group -
MODP768/MODP1024/MODP1536.
Key Lifetime (quick) The rekey-renegotiated period of the IKE Phase2 keying
channel. The acceptable range is from 5 to 1440 minutes (24
hours).