Banned users can be configured in the setup file via the `banned_users` setting. This is a list of user names, or [[PageSpecs|ikiwiki/PageSpec]] to ban. Using a PageSpec is useful to block an IP address. For example: banned_users => ['evilspammer', 'ip(192.168.1.1)'], If a banned user attempts to use the ikiwiki CGI, they will receive a 403 Forbidden webpage indicating they are banned.