Sitecom N600 X5 User Manual page 50

Virtual Server
Use the Virtual Server function when you want different servers/clients in
your LAN to handle different service/Internet application type (e.g. Email, FTP,
Web server etc.) from the Internet. Computers use numbers called port
numbers to recognize a particular service/Internet application type. The
Virtual Server allows you to re-direct a particular service port number (from
the Internet/WAN Port) to a particular LAN private IP address and its service
port number.
Enable Virtual Server Enable Virtual Server.
Local IP This is the LAN client/host IP address that the Public Port number
packet will be sent to.
Local Port This is the port number (of the above Private IP host) that the
below Public Port number will be changed to when the packet enters your
LAN (to the LAN Server/Client IP).
Type Select the port number protocol type (TCP, UDP or both). If you are
unsure, then leave it to the default "both" setting. Public Port Enter the
service (service/Internet application) port number from the Internet that will
be re-directed to the above Private IP address host in your LAN
Comment The description of this setting.