User's Manual

Ch 4. Advanced Configurations

Configuring LAN to WAN

Firewall

Filtering function is used to block packets from LAN to WAN. The device

supports three kinds of filter Port Filtering, IP Filtering and MAC Filtering. All the

entries in current filter table are used to restrict certain types of packets from your

local network to through the device. Use of such filters can be helpful in securing

or restricting your local network.

Port Filtering

When you enable the Port Filtering function, you can specify a single port or port

ranges in current filter table. Once the source port of outgoing packets match the

port definition or within the port ranges in the table, the firewall will block those

packets from LAN to WAN.