anthonie

I am using Linux, so primarely that would be the place to search for tools. Assuming you have no ssh access to the device, I would take out the harddisk and put in a pc as a slave drive to be able to access it. If that's done, download / install a program called Testdisk. (Edit: I just noticed on the wiki it's available for all major OS's.) http://www.cgsecurity.org/wiki/TestDisk Run it with enough user right (sudo/su/gksudo) and recover your files with it. The testdisk manual can be found here http://linux.die.net/man/1/testdisk More extensive info on recovery can be found here http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step If you insist on Windows, there used to be a nice little program (albeit slow) called GetDataBack. It can still be found on plenty of sites.

A shame. And I can't help but wonder, how legal it is to sell devices without the appropriate security certificates. You mean on the device I use to watch the streams? Than I would have to change lots of them, as I only set this system up for the owners, whom will want to access/watch these streams from a range of devices. Isn't that for Windows? Clients both use Mac/Linux. I was wondering: If I am not mistaken, these avtech devices run some form of embedded linux, is that correct? Is it not possible to ssh into the machine and provide it with a new/altered certificate?

For a friend I installed two cctv systems that seem to be DVR4H3's from AVTech and of course I ran into the same certificate issues. I work with Linux on my machines, so I wanted to use Firefox to display the webinterface remotely. Having a java-spin called IcedTea (1.6.x) did not work, so I installed Sun's Java version 7 and presto: The applets load. I did have to turn off all security measures and disallow the checking of old certificates as well, in order for the applets to run. This is not only not ideal, but it poses direct security threats, as it invites people to invoke dangerous behaviour with their browser settings. It requires them to accept circumstances in which they no longer can expect themselves to be protected from all sorts of digital harm. I live and work in Europe where, according to Wiki, there are some rules regarding those certificates. I wonder if that's applicable to these dvr certificates as well. http://en.wikipedia.org/wiki/Public_key_certificate#Usage_in_the_European_Union