Hello! - I`m in the works to setup a MC server, with Forge, mainly for my son and friends to play on. The server is up and running. But, how do i set and protect spwan? Wich mods do i need? Running MC 26.03 on CraftyController.

You can do this without any mods:

At the center of your spawn, use

/setworldspawn

then

/gamerule spawnRadius 0

So the player spawn will be at this location

To protect this area, change the spawn-protection value in the server.properties

Default is 16 blocks - so an area of 33x33 blocks (one spawn block plus 16 blocks in each direction) is protected based on your worldspawn - just increase the number to protect a larger area