Same problem
I've had a number of IP cameras over the years and it rarely takes more than 15 mins to find a way to access the feed without logging in. Seems to be an issue across the board and not just these brands.
D-Link and Vivotek have submitted their entries for “dumbest security vulnerability of 2013”, with Core Security turning up a variety of daft bugs in their IP cameras, including hard-coded backdoor passwords. The advisories are here for Vivotek and here for D-Link. D-Link has told Core Security it is preparing a fix, but the …