Billion Electric Company BiGuard 2 - Manual (Page 92)

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Connection Name: A user-defined name for the connection.
Pre-shared Key: This is for the Internet Key Exchange (IKE) protocol. IKE is used to
establish a shared security policy and authenticated keys for services (such as IPSec)
that require a key. Before any IPSec traffic can be passed, each router must be able
to verify the identity of its peer. This can be done by manually entering the
pre-shared key into both sides (router or hosts).
Connection Type:
There are 5 connection types:
(1)LAN to LAN: BiGuard would like to establish an IPSec VPN tunnel with remote
router using Fixed Internet IP or domain name by using main mode.