Hosting a Gmod Server

I make a server for my friends to go on,but when they go on they cant use their sweps or addons they downloaded. Can somone help me? Is it because i have to toggle a setting only I can use sweps and addons? I downloaded the ssame stuff as them.

No its because you need to download them to your game (assuming your using a listen server)

btw this is in the wrong section