You can download KZ-Rush LAN server here.
Stable work is guaranteed for all CS builds from 6153 to 8684. To check your build just type version in console:



Attention! The latest CS build available on Steam has distorted physics, and therefore we are forced to prohibit its use. To switch to the legal version (build 8684), you need to use legacy mode (Steam Library - right click on CS - Properties - Beta - Select steam_legacy from the list). After this, Steam will update some of the game files.

Attention! Before installation make sure that you've launched game through New Game at least once.

Unpack (or just drag) the contents of lan_server_v4.xx.zip into cstrike folder. This folder's located in Steam directory:



If you are asked about files replacement, choose "Copy and replace":



If you are already using some other LAN server, just delete addons folder from your cstrike and then install our LAN server.