Configure Link Monitor

To monitor the status of interfaces on your Firebox, you can configure Link Monitor targets, which are remote hosts beyond your network perimeter. For detailed information about how Link Monitor works, and for best practices, see About Link Monitor.

Different interface types have different Link Monitor default settings and requirements:

  • External interfaces — The default target is the default gateway, which is the next hop after the Firebox. For meaningful performance data, we recommend that you replace the default gateway target with a different Link Monitor target.
  • Internal interfaces (Fireware v12.4 or higher) — After you add an internal interface to Link Monitor, there is no default target. You must specify a next hop IP address or add a target. Internal interfaces are Trusted, Optional, or Custom interfaces.
  • BOVPN virtual interfaces (Fireware v12.4 or higher) —The default target is the peer IP address. You cannot edit or remove this target, or add other targets.

If you specify a domain name in the settings for a target, you must configure a DNS server as described in Configure Network DNS and WINS Servers.

Add an Interface

Edit the Link Monitor Configuration

Configure Link Monitor in Fireware v12.3.x

In Fireware v12.3.x, the steps to enable and configure Link Monitor are different.

Configure Link Monitor in Fireware v12.2.1 or Lower

In Fireware v12.2.1 or lower, link monitor settings appear in the multi-WAN configuration, and you must enable multi-WAN to configure link monitor targets. You can configure up to two link monitor targets for an interface.

To configure link monitor targets in Fireware v12.2.1 or lower, see Configure Link Monitor in the Fireware v12.2.1 or lower in the WatchGuard Knowledge Base.

See Also

About Link Monitor

About SD-WAN

About Multi-WAN