Server Help


Hey, So i made a server for shits and gigs but i realized it was pretty simple and i want to add some scripts and other things onto it. I just need help with a couple things. One is i want it so when people join they cant use any client sided scripts, that are not permitted. And another one is whitelisting, which whitelisting script would you guys use? I think i can find out how to install it but i want a good one thats easy to use. Please get back to me! Thanks.