
Advanced Features
Advanced Features
 NAT – NAT (Network Address Translation) is the technology which allows a number of LAN PCs to share one (1) Internet IP address.
 Remote Access Configuration – This feature allows you to manage the 
 External Filters Configuration – These settings determine whether or not the 
 Interface Binding – Use these to ensure that certain traffic is sent by a particular WAN port, and thereby a particular ISP account. These settings are only useful if using both WAN ports. 
 Protocol & Port Binding – This allows you binding WAN 1 or WAN 2 ports by selecting TCP/UDP protocol
Settings - Advanced Features
NAT Configuration | • NAT Routing – NAT (Network Address Translation) is the technology which allows one (1) WAN (Internet) IP address to be used by many LAN users.  | 
  | - If you disable NAT, Internet access is only possible if all PCs are configured with valid Internet IP addresses. (The   | 
  | - NAT is disabled only when you wish to use the   | 
  | • TCP Timeout – Enter the desired value to use on both WAN ports. The default is 300.  | 
  | • UDP Timeout – Enter the desired value to use on both WAN ports. The default is 120.  | 
  | • TCP Window Limit – Enter the desired value to use on both WAN ports. The default is 0 (no limit).  | 
  | • TCP MSS Limit – Enter the required MSS (Maximum Segment Size) to use on both WAN ports. The default is 0 (no limit).  | 
  | • Disable Port Translation – Enter the desired port range of all packets which are not translated via WAN port.  | 
Remote Access Configuration  | • Remote Upgrade – If enabled, you can u�  | 
  | • Remote   | 
  | • Port – The port number used when connecting remotely. See below for details.  | 
  | • Allowed IP range – Remote access is only available to the IP addresses entered here.  | 
  | - Leaving these fields blank will allow access by all PCs.  | 
  | - These addresses must be Internet IP addresses and not addresses on the local LAN.  | 
  | - To specify a single address, enter it in both fields.  | 
External Filters Configuration | These settings determine whether or not the   | 
  | • Block Selected packet types – This acts as “master” switch. If checked, the selected packet types are blocked. Otherwise, they are accepted.  | 
  | • Echo Request, Timestamp Request – Select the packet types you wish to block, using the checkboxes.  | 
Dynamic Routing | • RIP v2 – This acts as “master” switch. If enabled, the selected WAN or LAN will run RIPv1/v2.  | 
  | • LAN, WAN1, WAN2 – When enabled, any WAN or LAN can execute RIP function.  | 
DNS Loopback | Some servers on a LAN and their domain names have already registered on public DNS. To avoid DNS loopback problem, enter the following fields.  | 
  | • Domain Name – Enter the domain name specified by you for local host/server.  | 
  | • Private IP – Enter the private IP address of your local host/server.  | 
Interface Binding | SMTP (Simple Mail Transport Protocol) Binding (This applies only when using   | 
  | Some ISPs configure their   | 
  | port may result in   | 
  | • Enable - When enabled, the port you specify below will be used for all outgoing SMTP traffic. If not enabled, either port will be used.  | 
  | • WAN 1 / WAN 2 – Select the desired port.  | 
Protocol & Port Binding | Use these settings if you wish to ensure   | 
  | • Enable - Enable or disable each item as required.  | 
  | • Source IP - IP address of source which packets are sent from.  | 
  | • Destination IP – IP address of destination which packets are sent to.  | 
  | • Subnet Mask – With subnet mask other than 255.255.255.255, you can make a IP   | 
  | • Protocol - Select the protocol used by the traffic you wish to configure.  | 
  | • Port Range - Enter the beginning and end of the port range used by the traffic you wish to configure. If only a single port is used, enter the port number in both fields.  | 
  | • WAN - Select the port you wish this traffic to use.  | 
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