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External cannot surf to my server

i got a nat server ( redhat9 )....from there i install ntop to see what happen to the network...i also make the server as ftp server also. i have a static ip...i have register a free domain name with dyndns.org where i register a static domain and the domain point to my static ip which is my nat server ip.

today i went to cyber cafe and try to surf to ntop at my server...i can't connect at all...even ftp also...

what wrong actually?...

i haven't set a dns or bind yet because i dont have the configuration of the dyndns free domain...but when i try internallly, it was ok...

pls help
1 Solution
I bet firewall is on/NAT does it.

You can remote check your webserver from home by using here:


Just type in your IP, and see if it can connect to webserver.

But I do believe firewall is on default on Redhat (certainly from 7.1 upwards).

You will need to open ports 21 (ftp) and 80 (http).  I am not sure what NAT does though on your network configuration - that can certainly foul things up.


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