AmbiCom WL250N-AR - Manual (Page 57)

addresses, or just input the IP address in the left field to define a single IP address.
Local Port Range (4): Please input the range of local (source) port number that will be affected by this rule. If you want to
apply this rule on port 80 to 90, please input ’80-90’; if you want to apply this rule on a single port,
just input the port number, like ‘80’.
Remote IP Address: (5): Specify the remote (destination) IP address that will be affected by this rule. Please input the
starting IP address in the left field, and input the end IP address in the right field to define a range of
IP addresses, or just input the IP address in the left field to define a single IP address.
Remote Port Range (6): Please input the range of remote (destination) port number that will be affected by this rule. If you
want to apply this rule on port 80 to 90, please input ’80-90’; if you want to apply this rule on a single
port, just input the port number, like ‘80’. If the remote (destination) IP address and /or port number
is universal, just leave it blank.
Traffic Type (7): Please select the traffic type of this rule, available options are None, SMTP, HTTP, POP3, and FTP.
You can select a specific traffic type for this rule, if you want to make this rule as a IP address based
rule (apply the limitation on all traffics from / to the specified IP address / port number), select
‘None’.
Protocol (8): Please select the protocol type of this rule, available options are TCP and UDP. If you don’t know
what protocol your application uses, please try ‘TCP’ first, and switch to ‘UDP’ if this rule doesn’t
seems to work.
3-2 Network Address Translation (NAT)
Network address translations solve the problem if sharing a single IP address to multiple computers. Without NAT, all
computers must be assigned with a valid Internet IP address to get connected to Internet, but Internet service providers only
provide very few IP addresses to every user. Therefore it’s necessary to use NAT technology to share a single Internet IP
address to multiple computers on local network, so everyone can get connected to Internet.
3-2-1 Basic NAT Settings (Enable or disable NAT function)
Please click ‘NAT’ menu on the left of web management interface, and the following message will be displayed on your web
browser:
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