Silver Peak SD-WAN Deployment Guide
In Router or Bridge modeIn-line deployment of an appliance, placing it between an Ethernet LAN switch and a WAN edge router. Use in 2 port or 4 port mode., you can provide security on any WANWide Area Network-side interface by hardening the interface. This means:
From Configuration > Deployment, click the lock icon to toggle between hardening and unhardening an interface.