User guide

Configuring Virtual Private Networks
100 WatchGuard Firebox X Edge
4 Type the Name and Shared Key for the VPN tunnel.
The shared key is a passphrase used by two IPSec-compatible appliances
to encrypt and decrypt the data that goes through the VPN tunnel. The
two appliances use the same passphrase. If the appliances do not have
the same passphrase, they cannot encrypt and decrypt the data
correctly.
Phase 1 settings
Internet Key Exchange (IKE) is a protocol used with VPNs that auto-
mates the process of negotiating keys, changing keys, and determin-
ing when to change keys. Phase 1, the first stage in the IKE
negotiation,
authenticates the two parties and sets up a key man-
agement security association for protecting the data.
The default Phase 1 settings are the same for all Firebox X devices.
These settings are commonly left in their default values.
To modify Phase 1 settings, complete the following steps: