WRT54G + XP SP3 - Port Opening

By bman2005
Dec 13, 2008
  1. Afternoon all-

    After dealing with some unstable issues using Gamespy I have been inspired to try and get the private LAN game back up and running. I have been trying over the past year to get other gamers to see my machine but to no avail. All we get are time out errors - which has led to a battery of port tests.

    It appears that everything is blocked or filtered. I have checked with my ISP and they do not block any ports. However, no matter what I try - I get the same response

    a) connection refused

    I am beginning to think this is a SP3 (XP) issue as I have tried completely bypassing the router (wrt54G), in safe mode with networking and I get the same messages and game response.

    Here is what I have:

    WRT54G Version 2
    Updated Firmware to version 4.21.1

    Windows XP with SP3

    Game trying to plan - Flight Simulator X
    Ports anticipated by FSX = 2300-2400, 6073 and 23456

    I have two workstation running into the router. One system (non-gaming) is hardwired. The second system (FSX machine) uses a wireless adapter D-Link DWL-510

    I don't have any network connection issues as a whole. Everything has been running stable and access is fine. The wireless adapter is under WEP security.

    What I have tried:

    1) Verified that all antivirus software is off (windows and !avast)
    2) Made gaming computer static IP -

    3) On router - set port forwarding to the ranges as noted above for FSX

    4) On router - enabled DMZ for

    5) On route - unchecked "Block Anonymous Requests"

    6) Connect directly to modem
    7) Safemode + networking

    That's about all I can think of. No matter what I try, I can not see the ports open. I can ping my IP.

    Lost and confused. Any help is appreciated.

  2. LookinAround

    LookinAround Ex Tech Spotter Posts: 6,491   +183

    just an update for you... i've seen your post and plan to look into your problem so i will get back to you again.. probably later today.
  3. bman2005

    bman2005 TS Rookie Topic Starter Posts: 21


    Hey thanks for the update. I have an update myself. I think I found my solution last night after about 30 straight hours of hunting, trying and pecking.

    I believe that my solution has come from the RPC Locator service. I found some obscure thread that talked about SP3 turning that service off. I turned it back on and now have connection from other users.

    Other information however - all ports are shown as stealth on GRC's ShieldsUP and all ports come back as

    Error: I could not see your service on on port (21)
    Reason: Connection timed out

    When I test on

    Last but not least when I go to anonymous surfing ( I test anonymous. When I enable DRZ - it works as suspected and tells me ports are visible but closed.

    Is there any software that will test ports open / closed or stealth rather than getting into a game and trying and seeing if it does in fact work or not?

    Thanks for your help!

  4. LookinAround

    LookinAround Ex Tech Spotter Posts: 6,491   +183

    Zenmap is a Windows graphical interface front-end for, i think, one of the best and versatile port testing tools: Nmap.

    In fact figuring out all the commands and options can at first appear overwhelming but the Zenmap interface makes it much simpler. Especially if you start Zenmap then click Tools->Command wizard to help you build all the basic commands/scans you can start with.

    Website has some good documentation also
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