Link To Mod (http://mods.simplemachines.org/index.php?mod=236)
Download: http://www.anetcity.com/bbs/index.php?topic=6659.0
Pevent a user to enter a board that he shall not visit even though he can see it.
增加一个用户权限来控制用户是否可以进入一个版面. 无权的话, 用户不能进入可以看见的版面.