Site-to-Site VPNsAbout Site-to-Site VPNTypes of Site-to-Site VPN TopologiesRequirements and Prerequisites for Site-to-Site VPNManage Site-to-Site VPNsConfigure a Policy-based Site-to-Site VPNAbout Virtual Tunnel InterfacesGuidelines and Limitations for Virtual Tunnel InterfacesAdd a VTI InterfaceCreate a Route-based Site-to-Site VPNRoute Traffic Through a Backup VTI TunnelConfigure Dynamic VTI for a Route-based Site-to-Site VPNHow to Configure a Virtual Router with Dynamic VTIConfigure Routing and AC Policies for VTIDeploy a SASE Tunnel on UmbrellaGuidelines and Limitations for Configuring SASE Tunnels on UmbrellaHow to Deploy a SASE Tunnel on UmbrellaMonitoring the Site-to-Site VPNsHistory for Site-to-Site VPN