Tenda F303 Manual page 53

single port, enter the port number in both Start and End
fields, say, 21 for FTP). Contact corresponding service provider if you
don't know the port number of the service to use.
2. LAN IP: Specify the internal host's IP address. Be sure to statically
assign the host's IP address to make this function constant.
3. Protocol: Specify the protocol required for the service utilizing the
port(s).
4. Enable: Check to enable current settings.
5. OK: Click to activate your settings.
Now, your friends only need to enter ftp://xxx.xxx.xxx.xxx:21 in their
browsers to access your FTP server xxx.xxx.xxx.xxx is the router's WAN IP
address. Assuming it is 172.16.102.89, and then your friends need to
enter ftp://172.16.102.89：21
For example:
You want to share some large files with your friends who are not in your
LAN; however it is not convenient to transfer such large files across
network. Then, you can set up your own PC as a FTP server and use the
Port (Range) Forwarding feature to let your friends access these files.
Assuming that the static IP address of the FTP server (Namely, your PC) is
192.168.0.10, you want your friends to access this FTP server through
default port of 21 using the TCP protocol, then do as follows:
1. Start/End Port: Enter 21 in both Start Port and End Port fields.
2. LAN IP: Enter 192.168.0.10
3. Protocol: Select TCP.
4. Enable: Check to enable current settings.
5. OK: Click to activate your settings.
!
Note: If you include port 80 on this section, you must set the port for
remote (web-based) management to a different number than 80,
such as 8080, otherwise the virtual server feature may not take
effect.
6.2 DMZ Host
The DMZ (De-Militarized Zone) function disables the firewall on the router
for one device for a special purpose service such as Internet gaming or
video conferencing. Enabling DMZ host may expose your local network to
potential attacks. So it is advisable to use it with caution.
in their browsers.