Setting up WinRoute
If you want to use your Dreamcast server to do more than just surf the internet or email, you need to install a program to do the Net Address Translation required by most online games. I use a program called WinRoute Lite in these examples because it's one of the few that actually work with the dial-in connection, and it's easy to setup. You can also use the Professional version of WinRoute, and you may have to as I've been told some DSL or PPPoE setups won't work with the Lite version.
Download the software from Kerio Technology's website and install it. After installation you may be prompted to reboot the system, so go ahead and reboot.
To configure WinRoute Lite is easy. Open up the Administration dialog box and go to the Settings tab. Make sure you have the proper adapter selected for your internet connection.
Your PC is now ready to connect to your Dreamcast, but if you want to play online games, you're going to need to know how to setup port mappings. I'll show you how to configure the port mapping for Phantasy Star Online and PSO Version 2. If you try other games and they're not working, you can try this.
To connect Phantasy Star Online, you have to make one more change in WinRoute Lite. In the Administration dialog box, on the Settings tab (see picture above), click the button labeled Settings in the Advanced Settings section. Here you must create a port mapping to help the PSO servers find your Dreamcast. Click Add, and then map the ports 40975, 41231, 41487, or 41743 (or you can just map a range that includes those ports) to whatever IP address the Dial-up Server uses.
If you don't know the IP address, you'll have to first establish a connection and then look at the Active Connections in WinRoute's dialog box (in the picture below, it would be 192.168.1.2).
First open up the Administration window. When presented with the Open Configuration prompt, go ahead and log in to your configuration account. If you haven't created a configuration account yet, just click the Ok button.
Now go the the Settings menu, and click Interfaces. Select your LAN adapter and click properties, and then check Perform NAT with the IP address of this interface on all communication passing through. Make sure you don't have Exclude this computer from NAT checked and then click Ok. Then open up the properties for your RAS interface and make sure NAT is not enabled. When you're done it should look like the picture below.
Your PC is now ready to connect to your Dreamcast, but if you want to play online games, you're going to need to know how to setup port mappings. I'll show you how to configure the port mapping for Phantasy Star Online and PSO Version 2. If you try other games and they're not working, you can try this.
To connect Phantasy Star Online, you have to make one more change in WinRoute, but first you need to find out the Dreamcast's local IP address. Establish a connection with the Dreamcast, and then go to the Start Menu, and select Settings/Network Connections, and find your connection to the Dreamcast and click on it. You should see the status box (see below). Click on the Details tab and take note of the Client IP
Now in the WinRoute Administration, click on the Settings menu, and choose Advanced/Port Mappings. Here you must create a port mapping to help the PSO servers find your Dreamcast. Click Add, and then map the ports 40975, 41231, 41487, or 41743 to whatever IP address the Dial-up Server uses (the address you got in the above step).
Now you're ready to make the connection :)