MAC Filtering
When you enable the MAC Filtering function, you can specify the MAC Addresses in current filter table. Once the source MAC Address of outgoing packets match the MAC Addresses in the table, the firewall will block this packet from LAN to WAN.
Configuring Port Forwarding (Virtual Server)
This function allows you to automatically redirect common network services to a specific machine behind the NAT firewall. These settings are only necessary if you wish to host some sort of server like a web server or mail server on the private local network behind the device's NAT firewall.
The most often used port numbers are shown in the following table.
Services | Port Number |
|
|
ECHO | 7 |
FTP (File Transfer Protocol) | 21 |
Telnet | 23 |
SMTP (Simple Mail Transfer Protocol) | 25 |
DNS (Domain Name System) | 53 |
Finger | 79 |
HTTP (Hyper Text Transfer Protocol) | 80 |
42
