[ALUG] webcam and firewall java applet problem

[Jenny Hopkins]

Hi,

I'm trying to enable access to an internal webcam externally, through
a firewall.  For complex reasons I won't go into unless necessary, the
firewall forwards to a server running xinetd, which then port forwards
to the camera.

The firewall has ports 8090 and 40001 opened, the manual stating these
are the two required.

The xinetd conf forwards 8090 to the camera port 80, and 40001 to the
camera port 40001, the former rule called 'camera' and the latter
'camera_image'.

Now - using debian and firefox browser, i.e. the java applet option, I
can see the webpage but the image is blank white.  (The same setup
could see the image fine on the internal network.)  Error message on
page: "Loading java applet failed". Only the 'camera' rule is invoked
in the firewall log.

 Windows IE users select the ActiveX button and can see the image
fine, and I note that now in the firewall log the 'camera_image' rule
is now being invoked as well as 'camera'.  The java applet does not
try and use port 40001 for some reason, but I can't see any rejected
requests for other ports.

Can anyone shed any light on this? I hope I've explained it well enough.

Thanks,

Jenny