Firewall Features - Service Blocking
The ZyAIR G-2000's firewall interface is not the easiest to navigate for a novice when it comes to blocking services (also known as port filtering) but does include dozens of pre-created firewall services ready for blocking.
Figure 5: Enable Firewall, log traffic, and specify an IP that can bypass firewall blocks
Selecting a service to block is as simple as selecting the service name and clicking ADD (Figure 6). The result will be that the service (say, PING) will be blocked (dropped silently) from traversing the WAN, inbound to the LAN. Note that the web-interface does not provide the ability to selectively block specific IP addresses or perform directionally specific blocks.
Figure 6: Enable Services Blocking using predefined services, custom services, and block by time