You can also close your forum, and set the general "Forum Closed" message, from "Master Settings" -> "Primary Settings" -> "General Tab"
You are given two options: "Close Board?" - Which closes your forum (just like the link on the CP Landing page) "Closed Message" - This is where you set the body of the closed message that your users will see.
Just fyi, When the board is closed. Only a admin will have the ability to browse the forum and make edits Your clue that the board is closed is the ribbon on the header that states so.
Blue Man Group There is no such thing as stupid questions. Just stupid answers