Before you begin, please ensure that Counter Strike Global Offensive is already installed on all computers involved. The computers must be connected to the same network, and the game should be set to go through the Windows firewall.
You can reconfigure your firewall settings by going to the
Control Panel >
Firewall and selecting
Allow a program or feature through Windows Firewall.
Launch Counter Strike Global Offensive and click
Options >
Game Settings >
Enable the Developer Console.
On the computer you'd like to use as a LAN server, click
Play >
Offline with bots. Next, launch a game, open the console, and type the following command: sv_lan 1
.
Your server is now ready. You can retrieve its IP address (which will allow the other players to connect to it) by typing in the
status command and looking for a line similar to
udp/ip : 192.168.0.103:27015.
You can define the number of bots with the following command: bot_quota
.
Next, on the client computer, open Counter Strike Global Offensive and open the console from the main menu. Then type the following, replacing the x's with the IP address of the LAN server: connect xxx.xxx.x.xxx:xxxx
source:
http://ccm.net/faq/35662-counter-strike-global-offensive-game-play (Counter Strike Global Offensive Game Play)