SMC Networks BLW-54MF - Manual (Page 57)

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BLW-54MF
œDeleteĈDelete the protocol you set before.
œCancelĈIf you do not want to do this setting right now, you may click
this button to exist.
2.2 Virtual Server
BLW-54MF can enable Virtual Server function, and remote hosts can use
public IP address to connect with the Internet and FTP and then enter the
LAN, but all the PCs on the LAN will not be seen from the outside. Virtual
Server function can let users set a local server with specific port number
which stands for the specific port, such as Web (80), FTP (21), and Telnet
(23). When BLW-54MF receives an incoming access request to the specific
port, it will forward the request to the corresponding internal server which
means the external request for accessing a specific port will be reassigned
to a different port
To enable Server Port is like to open the firewall, which exposes
your LAN to users on the Internet. It is to say that the NAT
function of BLW-54MF will not be able to provide protection and
prevent hackers.