That sounds peculiar that some ports would get forwarded but others not, you might want to check and see if your ISP is blocking the ports if your going through the internet to this security application. If everything is local, then you should try to follow the advice of upgrading your firmware to the latest version, in order to avoid "bricking" your router do the following sequence, before you upgrade:
do a backup of your configuration (optional)
Reset router to factory default settings from the GUI.
Upgrade to latest firmware.
Reset router to factory default settings again from the GUI.
Configure everything again manually *RECOMENDED*
This somewhat ilogical sequence of events prevents the IOS from being corrupted and has worked in many cases I have dealt with regarding router "lock up" issues.
Besides that the only thing else I can think of is find out if there are any more additional ports required for this application to work properly and check to see if your using the exact protocol UDP or TCP for the ports that are being forwarded.
you stated that the software "broadcasts" over port 7000, is this a streaming application? in other words, for me to look at the video do i need to launch my web browser and point it to the Vista box? (talking from the WAN side) or just launch my handy video connection application and it will phone home to the Vista box and display the video?
you may want to check two things, one; you may want to create a port trigger rather than a port forward; two, if port forward is correct, then i would bet you are using TCP rather than UDP. unless specified by the mfg, try UDP for the protocol.
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