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NTU-2V, NTU-RG Optical Network Terminals  31 
Click the Add button to add a new filtration rule. 
 
–  Filter Name – filter text description; 
–  IP Version – IP protocol version; 
–  Protocol – the network protocol selected; 
–  Source MAC address – source MAC address; 
–  Source IP address[/prefix length] – source IP address (prefix length can be specified after slash); 
–  Source Port (port or port:port) – source port(s); 
–  Destination  IP  address[/prefix  length]  –  destination  IP  address  (prefix  length  can  be  specified  after 
slash); 
–  Destination Port (port or port:port) – destination port(s); 
WAN (configured in the router mode and having firewall enabled) and LAN Interfaces 
–  Select All – when set, allows selection of all available interfaces. 
You can also select an interface from the list by setting a flag in front of it. 
Click the Apply/Save button to accept and save the settings.