3.6 Firewall
The system provided firewall functions include: MAC/IP/Port filtering,
Content Filtering, Port Forwarding, System Security and DMZ, to help prevent your
network from a hacker attack or to limit some clients' access.
3.6.1 MAC/IP/Port Filtering
Select Firewall, then MAC/IP/Port Filtering from the main menu to enter the page
as indicated in figure 19. Input the MAC address or IP address and Port range into
the corresponding fields. Select a Protocol you want to filter, and select the action
of Drop or Accept, then click Apply. The setting will append to the Current MAC
IP Port filtering rules in system table. Repeating this step, you can set all the
filter rules you want into this table. After your finished, access from the Internet
or LAN that matches the rules in the table will be Dropped or Accepted depending
on the corresponding Action setting thus limiting the clients' access.
3.6.2 Port Forwarding (Virtual Server)
If you configure the router for Virtual Server use, remote users accessing services such
as the Web or FTP at your local site via a public IP address can be automatically
redirected to local servers configured within your private IP addresses. In other words,
depending on the requested server (TCP/UDP port number), the router redirects the
external service request to the appropriate server.
Before using Virtual Server, You should add a static IP address to the designated
PC. You can add a Virtual Server by using the interface in figure 20:
