Edimax Technology BR-6215SRg - Manual (Page 41)

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2.6 NAT
Network Address Translation (NAT) allows multiple users at your local site to access the Internet through a single Public
IP Address or multiple Public IP Addresses. NAT provides Firewall protection from hacker attacks and has the flexibility
to allow you to map Private IP Addresses to Public IP Addresses for key services such as Websites and FTP.
Parameters Description
Port Forwarding
You can have different services (e.g. email, FTP, Web etc.) going to different service
servers/clients in your LAN. The Port Forwarding allows you to re-direct a particular range
of service port numbers (from the Internet/WAN Ports) to a particular LAN IP address.
Virtual Server
You can have different services (e.g. email, FTP, Web etc.) going to different service
servers/clients in your LAN. The Virtual Server allows you to re-direct a particular service
port number (from the Internet/WAN Port) to a particular LAN IP address and its service
port number.
Special Applications
Some applications require multiple connections, such as Internet games, video
conferencing, Internet telephony and others. In this section you can configure the router to
support these types of applications.
UPnP Setting
It allows to Enable or Disable UPnP feature here. After you enable the UPnP feature, all
client systems that support UPnP, like Windows XP, can discover this router automatically
and access the Internet through this router without any configuration. The NAT Traversal
function provided by UPnP can let applications that support UPnP smoothly connect to
Internet sites without any incompatibility problem due to the NAPT port translation.
ALG Setting You can select special applications that need “Application Layer Gateway” to support here.
Static Routing You can disable NAT function and setup the routing rules manually.
Click on one of the above NAT selections and proceed to the manual's relevant sub-section.
2.6.1 Port Forwarding
The Port Forwarding allows you to re-direct a particular range of service port numbers (from the Internet/WAN Ports) to a
particular LAN IP address. It helps you to host some servers behind the router NAT firewall.