IP cam: can view from LAN/WAN, but it's invisible from the Internet

I recently purchased an IP Cam.. While I can view the video stream on the LAN/WAN, I could not view it on the net (from outside my network). I use dynamic IP address.. I registed with No-Ip.com.. But whenever I try to get the view on the IPCAM, I am referred to the modem of my network.. Anything I should do?

It is similar to setting up DVR.

You need to forward the correct port(s) on your router/modem to the IP you've assigned to the camera.

What IP Cam exactly do you have? Don't you have a manual?

[marcoparker]

try to add :90 to the adress you write in your browser.
most of the dvrs use port 90
for example:
http://yoursitename.no-ip.com:90
you may find the port number in the manual of dvr if you have one.
else,you can check for the manual in the internet.
which dvr do you have ?

hope it helps,
marco