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2on2 with the same IP
This guide is for people who like to share their connection, to play in a 2on2-game using the same IP-adress on battle.net. I recommend that people who don't share their connecton, but have a router with a built-in firewall also follow this guide, because it will make your connection to battle.net much more stable. You will also be allowed to create games, which usually doesn't work when you've got a router.
This is what you need:
Two computers with a network card in each of them.
Starcraft: Broodwar.
A D-Link router.
Internet connection (No dial-up-modem)
If you haven't ever handled a router and basically don't know anything about networking, this guide could be hard for you to understand. There can be many words that you would not of seen before, Therefore, I'll try to explain this on a low level, so that it doesn't matter how much you knew about it before.
Everytime your computer receives incoming data, it is sent to a port. Your computer has many different ports that can receive data and different activities will utilize different ports. Battle.net uses port 6112-6119 and 4000 to send your computer information via the protocols called TCP/IP and UDP. This is usually called port forwarding, but can also be called Virtual server. If you need any help with configuring TCP/IP and/or UDP, pay a visit to »
http://www.blizzard.com/support/?id=msi0423p to get information and suggestions about all kinds of networking.
If you haven't configured the battle.net ports before, you might be new to routers and firewalls too. A Router is a link that connects from your internet source (such as a modem) to your network and forwards it to computers in your network. Many routers have got a built-in firewall to block unknown sources to access your network, and that's what this guide is about - how you configure your router to "know" or "allow" the battle.net data to be sent to your modem -> through your router -> and to your computers. Anyhow, your router is operated through a tool called firmware (often built on the same basics as in a homesite) to access to all the necessary parts in your router, so that you may configure it.
First, here is a guide to help you update your firmware, note that all pictures are ment to be enlarged by clicking them: