Web cam through ISA2004SP2
- From: "Glenn" <glenn.johnston@xxxxxxxxxxx>
- To: isalist@xxxxxxxxxxxxx
- Date: Sat, 18 Feb 2006 05:39:15 -0700
Hi,
A client has had some vandalism problems, in recent months and has had 4,
$350 web cams fitted to the out side of the building, so he can watch from
his PC at home, and hopeful ring the polic & get them there while the
painting is still ocuring.
The cameras are not Rolls Royce units, but are not entry level ones
either, to me, they seem to be of reasonable quality, although this is my
first dealing with web cams such as these, that are intended for remote
monitoring. They connect to the internal LAN, via Cat5e, and get assigned
an IP from the DHCP server. I've set the cameras MAC in the DHCP to assign
a fixed IP for the each of the 4 cameras.
These work through a remote web browser on port 80 connecting to the IP,
an applet is downloaded from the camera, and then a random TCP port is set
by the camera between 20100 and 40100, for the the applet to receive the
image from the camera.
From the internal LAN pointing at the IP's of the cameras, they work
flawlessly.
After a lot of fiddling, the publishing of the port 80 stuff through the
ISA2004SP3 & IIS on an internal server is working fine, (by using /CAM1,
/CAM2 etc & URL redirection), the applet down loads, starts, and the image
viewer opens, but when the camera flicks to the random port it all falls
apart. From whats in the manual and the web interface to the camera, there
is no way to set it to a fixed port, or even a smaller range.
To complicate maters, One of the cameras seems to have a different
firmware version, as once this one is viewed, you need to clear the local
PC browser cache, before you can view the other 3, and there does not seem
to be away to update the firmware. Pitty this was only found after the
electrician had installed the units.
We can obviousy open all the ports in the range but would like a more
secure approach.
They don't have inbound VPN or L2TP setup, and don't want to set this up.
Has anyone worked with these sort of cameras or have any suggestions on
how to securly publish the random port through the ISA server / IIS.
He only has a single public IP, my first thought was a router, with port
forwarding & nat'ing, but this has issues getting at the cameras as the
router needs to forward port 80 to the server for the company web site,
and the cameras won't allow changing the port they listen on.
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