Hi All... It's been a while... So be gentle

I have just had the new Telstra Technicolor Gen 3 Cobra XH installed on the home network. (Telstra FTTN)

I am attempting to open and forward a port for remote access of my DNR-322L (D-link Network Video Recorder) however it appears to close whichever port I open after a very short time.

I have been using this feature for many years with various modem / router configurations but this time it's got me stumped ;(

Is there a simple way to work around this ? i.e. firewall rule or similar ?

1. I have a fixed IP address with telstra
2. DNR has a fixed IP address on Modem
3. I also have a dynamic DNR service running fine on the modem
4. All IP Camera's using port forwarding are accessable just fine
5. I am running latest firmware and all hotfixes on the DNR which is working perfectly on local network etc.

Any guidance would be most awesome

Thanx