IW4x is a modification for Call of Duty: Modern Warfare 2. IW4x includes many features which we believe should have been in the game right from the beginning. This includes dedicated servers, offline playability via LAN, modding support, demo recording and many more.
The game is backed by a decentralized network that we call the node system. Every gameserver is a node and keeps the network alive. The node system is used to share known and validated servers with each other. This helps to secure the client against possible takedowns.