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Hello everyone,
I have a Motorola Surfboard Cable Modem and a Linksys SRX wireless router. I also have an HP machine with XP Pro, and a HP laptop with XP Home, but it has the Remote Desktop Connection utility.
I enabled Forwarding Port 3389 on the router. I also signed up for dyndns.org to track the IP changes of my modem so I can "tune-in" from an outside network. I was able to get my laptop to remote desktop my PC from inside my local LAN at my home. I believe all I had to do was enter the IP address of the computer that was grabbing it dynamically from the router. Since this was all in-house, LAN, it doesn't seem to be a problem. I believe I even added my laptop's IP address somehow through the Linksys Access Restrictions console.
Now, I am trying to connect from my work computer. I haven't yet tried connecting via my laptop from an outside network, but that is my next experiment. I logged into my dyndns.org account to check on my modem's IP address which has changed from last night. I went to remote desktop and tried to login using the Modem's IP address. To my suprise, it was asking me for a Username & Password for Windows 2000 Advanced Server! I do not have a Server anywhere on my network other than my HP PC acting as a XP Server for the purpose of this Remote Desktop. I tried using my login and password for that HP PC, but it did not work. This is not the same "login" window I got when I successfully did this from my laptop in-Network. It was an XP Pro login screen, not a Windows 2000 Advanced Server login.
I guess my question is: What am I actually logging into when I enter my modem's IP address? Is it perhaps an OptimumOnline PC? Also, how do I get into my home computer from an outside line describing the situation above? Any help would be greatly appreciated. Thanks. Ryan

Well, if Windows 2000 Advanced Server has a Remote Desktop feature, it sounds like you have a stale dynamic DNS entry. Your IP address may have changed since last night, but it also may have changed again and not been updated. Therefore, whatever your DNS is pointing to, may be pointing to someone running Windows 2000 Advanced Server and this is why you are seeing their login. A way to confirm this would be to enable Remote Management on your Linksys router, point your web browser to the dynamic DNS name, and see if you can login to your router with its assigned username and password. If you can login, then the DNS is correct and something really weird is going on. If you can't login and you aren't even prompted with the Linksys login screen, then its a stale DNS entry. I recommend running Remote Management on a port other than the default 8080 because a lot of ISP's block that port due to hack attempts, and for your own security.
Also, you mentioned that when you tested this on your own LAN, you entered the IP address that your XP Pro machine received dynamically from the router. If you are going to continue to use Remote Desktop, give the PC a static IP address. If you have your port forwarding setup to forward 3389 to 192.168.1.100, it may work one day, but tomorrow when your Remote Desktop server gets 192.168.1.101, it will no longer work.

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