Nlynx ZWA-G120 Manuel D’Utilisation

 

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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. 

 

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. 

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