One of the persons involved in a home network has installed a Dlink DIR-825 Rev-B Extreme router on the Comcast cable system to allow a 'better' wireless signal on upper floors of the home. Two others involved in the same home network use a 'secure desktop access' software called NetOp to access the network remotely. To facilitate this software, we must 'port forward' port 6502 on BOTH UDP and TCP to the single system that is accessed. However, we are having great difficulty in getting this functional - so I'm the 'nerd' who has been asked to 'help' with this setup and my 'normal' means of accomplishing this setup (simple port forwarding) does not seem to work - neither does 'virtual server', for that matter. Prior to this router being installed, it was extremely simple to accomplish this remote access using a Linksys router, so our software firewall configuration has not changed but the new Dlink seems unable to allow remote access.
So my question: can someone tell me "step-by-step" exactly HOW (and via which of these access methods - port forwarding or virtual server) would be best? This configuration seems frustratingly difficult to accomplish and I'm about to take the Dlink 'out' of the network and re-install the Linksys with a 'high-gain' external antenna to facilitate simple signal enhancement. But I WOULD like to know what the h*** I'm doing 'wrong' with the Dlink....