D-Link → [Help Me] Opening ports on DIR-655

Hi,

I have a small network (4 computers). Three of those computers are used to play certain online games.

The company suggests using port forwarding to improve/allow communications with the games, however I cannot use that because there are 3 different computers/IP addresses that will be sending/receiving data to the game.

What I want to do is simply open the two ranges of ports the games use and restrict them on the remote side to a specific ip address range.

What is the best way to do this with the specific firewall (I'm used to using a much different firewall) built into this model of router?

I tried using the QOS engine but enabling traffic shaping seemed to make the DC issues even worse.

Any help would be greatly appreciated. Please ask if I haven't clarified something. Thank you in advance.

I read a bunch online since the last post and determined what I needed to do on the DIR-655 was to set up some application rules.

Unfortunately this is not solving my problems, and I'm stumped.

However, since this is obviously not a dlink issue I'm not going to bore you all with it.

Well, as you mentioned, on most D-Link routers you would set up an Application Rule to open the specific ports used by the games on an as-needed/on-demand basis.

Under "Advanced/Application Rules", you specify a "trigger" port, which should be a port the game always opens, whether inbound or outbound (be sure to specify the traffic-type next to the Trigger port, whether TCP, UDP, or both). The "Firewall" field (below "Trigger") should list all the ports used by the game (any combination of ranges and comma-separated values, e.g. "5000, 6200, 8000-8010, 9000"); I like to include the trigger port to be safe. Again, select the traffic type that should be allowed (to the right of "Firewall"). Give the rule a descriptive name, make sure the checkbox at the far left is checked to enable it, and click "Save Settings".

Unfortunately, I don't think it's possible to restrict an application rule to a specific group of remote IP addresses. D-Link routers do have an "Inbound Filter" feature, but this can only be used with Virtual Server or Port Forwarding, not Application Rules, as far as I can tell.

If you have personal-firewall software on the individual PCs, you might want to look into whether the equivalent of an "Inbound Filter" rule can be set up on the ports in question.

Aimhere