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Internet to the local network are blocked. Computers outside the Intranet are allowed to access
specific ports by using the vserv command.
There are four operation choices for vserv command: 1) Show, 2) Add, 3) Del, 0) Quit.
Example:
command>vserv
Set local virtual server mapping (maximum 12),
or <ESC> to escape
Operations => 1)Show 2)Add 3)Del 0)Quit : 2 ? Add a virtual server
Port number/application name : 80
? it's a Web server
Type => 1)tcp 2)udp : 1
? select TCP port
Server IP address : 192.168.0.254
? IP address of the local Web server
Below are some Port Numbers for some Internet applications:
Nameport Number
ftp 21
telnet 23
pop3 110
smtp 25
dns 53
www 80
news 119
gopher 70
Table 5
release
Gives up the obtained global port configuration. Executing this command disables the device,
unless the user executes the “renew” command as described below to retrieve configurations.
Example: