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4.9.2 Internal Server
Click “NAT” —> “Internal Server.”
The NAT firewall protects the computers in the local network from unauthorized
access from the Internet. Sometimes, however, it is required to allow access to a
local computer; e.g., a local FTP server. The router’s Internal Server function is
designed to let you do that. Each internal server operates on one service port. All
service requests to this port will be forwarded to the IP address specified.
Function: After setup, the router can allow some services, such as DNS, SMTP,
POP3, HTTP, NEWS, FTP, Telnet, PPTP in LAN, to be accessed from the Internet.
Or, by setting up a DMZ server you can have the router redirect all incoming
requests to one local computer, bypassing the NAT firewall completely.