ICG-2510W-Series User Manual

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ESP Keylife Set ESP keylife, current unit is hour, the default is 0
IKE aggressive
mode allowed
Negotiation mode adopt aggressive mode if tick; it is main
mode if non-tick
Perfect Forward
Security (PFS)
Tick to enable PFS, non-tick to disable PFS
Authentication: Choose use share encryption option or certificate authentication option. Current is only to choose use
share encryption option.
4.3.4.5. GRE
GRE (Generic Routing Encapsulation, Generic Routing Encapsulation) protocol is a network layer protocol (such as IP
and IPX). Data packets are encapsulated, so these encapsulated data packets go to another network layer protocol
(IP). GRE Tunnel technology is Layer Two Tunneling Protocol VPN (Virtual Private Network).
GRE Tunnel: Enable or disable GRE function.
When GRE tunnel is enabled, the configuration page is shown below.