Firewall Settings for the Linkskey LKR-604Router Sceenshot

Broadband Router | Firewall • Block WAN Ping • Client Filtering • MAC Control • DMZ • URL Filter Firewall Settings The Broadband Router provides packet filtering rules by restricting service ports, IP address or MAC address. However, for applications that require unrestricted access to the Internet, you can configure a specific client/server as a demilitarized zone (DMZ).