I dont want the guest to see the content of the forum, only after they are approved and registered

Is there anyway to remove the ability of viewing the forum? I basically only want members to be able to view the forum. im using 0.8.2

THIS HELPED! THANKS! i got it working

if anyone is wondering the website which was linked is down and it is this one http://burnaftercompiling.com/nodebb/setting-up-a-nodebb-forum-for-dummies/

The guide which nodebb provide link is unable to load and i would like to know when will the guide be loaded. I currently follow other guide but i reach to the point where the error is : NodeBB could nto connect to your redis database. redis returned the following error redis connection to my digital ocean data base failed - connect econnrefused

thanks if anybody can help me.

OH! my bad!

Will it be possible to @ people instead of groups?