23D-Link COVR-C1203 User ManualSection 3 - ConffgurationPPTP (continued)If you selected Static IP as the Address Mode:PPTP IP Address: Enter the IP address provided by your ISP.PPTP SubnetMask:Enter the subnet mask provided by your ISP.PPTP Gateway IPAddress:Enter the gateway IP address provided by your ISP.Primary DNSServer:Enter the primary DNS server IP address assigned by your ISP.Secondary DNSServer:Enter the secondary DNS server IP address assigned by your ISP.MTU: Maximum Transmission Unit - you may need to change the MTU foroptimal performance with your ISP.Click Save when you are done.