BenQ ESG-103 User Manual
Page 21
Chapter 3 Configuration - 17
3.3.3.1 Table of current virtual server entries
Sometimes, there are many servers located in the LAN side and wish to be
accessed by any remote host. However, they cannot be accessed directly
because of NAT. We could use Virtual Server to let remote hosts access
internal servers. In this configuration page, you can enter a public port that is
bound on a server in the LAN interface. For example, FTP server's public
port is 21, Telnet server's public port is 23, and HTTP server's public port is
80. After that, you should offer a host that maps to this public port. In
configuration figure below, you can map port 21 to the host whose IP
address is 192.168.1.101 and the remote host can access FTP server in the
LAN interface by accessing 211.21.83.14 through FTP client application
installed in the remote host itself. When you access ESG-103's WAN side,
the ESG-103 can convert your FTP packets and let them pass through the
NAT.
Protocol - Select the protocol type the server provides?