Say you have a nice home network that has a firewall, and you would like everyone in your house to see all your files AND still run "little snitch"
Well you must go into System Preferences, click on Little Snitch, and then Find "slpd"
If you want to know what slpd is go to this webpage" Click the lock to make changes, then double click "slpd" and then change from "deny" to "allow" Congradualtions! everyone should see your filesharing now.