Tuesday, March 6, 2007

Port-Forwarding on Prolink H9200P DSL Modem

Just learned this while helping a friend in Dumaguete City--- hosting a web server from his PC behind the router.

The server is to be accessed on port 80 so that http://his_wan_ip will be forwarded to port 8080 of a server on LAN. This requires changing the default admin port on Prolink to 61900 as an example.

In short, using a browser with the url http://his_wan_ip:61900 will access the Prolink admin interface, and http://his_wan_ip:80 or simply http://his_wan_ip will access the webpage in his internal web server on port 8080.

From the Services->NAT page, add an RDR rule as shown in the image.

192.168.1.4:8080 is the web server address on the local PC. TCP requests arriving on port 80 of the Prolink WAN interface will be redirected to port 8080 of the server.

Click 'Submit' then go to Admin Page and 'Commit' then 'Reboot' for the changes to take effect.

I don't have this type of modem, but a large telecom company in the Philippines is using this for their DSL clients. The default username and password with the remote Admin interface enabled pose security risk, but that's another story!

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