How to make a private/restricted channel

Every channel is able to be private (+p), and/or secret (+s). The two modes are similar, but it is possible for people to find out about a channel that is marked private only (+p). Therefore, if you want a channel nobody will be able to find out about unless they’re told, it is recommended that you mark it as secret and private, +sp. Unless you are in the channel or an IRCop, the server will pretend that the channel doesn’t exist.