You must select two network interfaces when you launch the instance. The first interface will be treated as a LAN interface and second interface will be treated as a WAN interface. Instance will boot if you only have one interface but the product will not fully function unless you have two interfaces. This is by design as the product works like a firewall appliance. If the instance is launched with just one interface, you can still use SSH to connect to the instance but the web interface will not allow authentication. The web interface is accessed using the WAN IP address you have assigned to the instance. The default username for the web interface is "Administrator" and the default password is the Instance ID. The LAN interface must be associated with a private Subnet and the WAN interface must be associated with a public Subnet. A private Subnet is one that does not have default gateway (0.0.0.0/0) set to an Internet Gateway. A public Subnet is one that does have default gateway (0.0.0.0/0) set to an Internet Gateway. Once the FatPipe MPVPN instance has been created, you must set the Route Table for your private Subnet to use the eth0 network interface of the FatPipe MPVPN instance. Your public Subnet should have a Route Table that uses an Internet Gateway. The final step, to allow the FatPipe MPVPN device to forward traffic, is to set "Source/Dest. Check" to "Disabled" on both LAN and WAN network interfaces. The easiest way to do this is to select the instance