In this chapter, we covered two Untangle applications related to WAN interfaces. The two applications allow us to utilize multiple WAN interfaces and get all the benefits from this setup. Untangle WAN Failover is used to provide a constant Internet connection by failing over all traffic from a down WAN interface to another interface. Untangle WAN Balancer is used to enhance network connection and bandwidth utilization by distributing your network traffic among multiple WAN interfaces.
The next chapter will cover the VPN solutions provided by Untangle NGFW. Open VPN is a free module using SSL-based VPN. OpenVPN is based on the well-known open source project (OpenVPN). Also, Untangle provides a paid IPsec VPN module that has some additional features over the OpenVPN module. Both the applications provide remote access (user-to-site) and site-to-site VPN connections.