The recommended DDNS service provider, and most importantly, it's complete free.
After the Dyn DNS stops offer free dynamic DNS service, I moved to noip.com, we got a free sub-domain, it provides reliable service during the past three years, until now it's still running on our standalone DVR. No-IP Free Dynamic DNS (No credit card needed) is our entry level service.

A webinar is a seminar that is conducted online (web seminar).
Webinars are also known as web seminars, web conferences or webcasts.
Unlike other platforms, our software doesn’t require installation.
The organizer and attendees need only a Web browser and Internet access.
The platform is flexible and customizable to meet your needs.
For more information about our advantage over competitors, please click here. Mac requirements are: 1.83 GHz Intel Core TM Duo or faster processor Mac OS X v10.4, 10.5, 10.6 (Intel) or higher 512 MB of RAM (1 GB recommended) Mozilla Firefox 3 or higher; Apple Safari 4 or 5; Google Chrome The latest version of Adobe ® Flash® Player for all users (hosts, presenters, participants, and administrators).
And here's a list of indoor cameras that are affordable and good.
But nearly ANY internet connected IP camera that supports h.264 or MPEG-4 video over RTSP will work!
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(worry not, most moderately modern cameras support this) Let us know what type of camera you have and we'll tell you if we can re-stream it.