A network packet forwarder allows wc3 games on Internet. Battle.LAN forwards LAN traffic to remote internet hosts, supplementing LAN applications to allow them to work on the Internet.
It is known to work with Warcraft v1.02 CD and No-CD version.
Warcraft 3 Setup Guide
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1. Launch Battle.LAN on the game host.
2. Enter the IPs of other players. The game host's IP may be omitted.
3. Press 'Add' to add the IP to the receivers list.
4. Click start.
5. Now create your Warcraft game normally. Your friends will see your game in the LAN game and be able to join it.