49  VoIP Subscriber Gateways 
 
 
Configuration of domain names 
To add the address into the list, fill in the described below fields and click 'Add' button: 
-  IP address – IPv4-address of host corresponding to the name specified in the ‘Domain 
name’ field; 
-  Domain name – host domain name for access to it. 
To remove an address from the list, click the 'Delete' link next to the selected address. 
To store changes to the operative memory of the device, click the Save Changes button. To store 
settings into the non-volatile memory, click Apply button. 
The ‘Ports Forwarding’ submenu 
 
The submenu is available only for TAU-8.IP-W devices. 
In the submenu, you may configure port forwarding from WAN interface to WLAN interface.  
NAT (Network Address Translation) allows for IP packet address and network port translation. 
Port  forwarding  is  required  when  TCP/UDP  connection  to  a  local  computer  (connected  to  LAN 
interface) is established from the external network. In this settings menu, you may define the rules 
allowing packets to pass from the external network to the specified address in the local network and 
thus establishing connection. Port forwarding is required when torrent and p2p servers are used. For 
this purpose, you should identify TCP/UDP ports used by a torrent or p2p client in their settings and 
assign the respective forwarding rules for your computer IP address.