If you are using a modern client with HTTP support, such as Q2Pro, AprQ2, R1Q2, or Q2RTX, you can now simply connect to the server at q2vortex.com and jump right in - no setup required.
For other clients, please download the following file and unzip it into your Quake II folder.
To join, just type connect q2vortex.com into your Quake II console.