valid users (S) This is a list of users that should be allowed to login to this service. Names starting with '@', '+' and '&' are interpreted using the same rules as described in the invalid users parameter. If this is empty (the default) then any user can login. If a username is in both this list and the invalid users list then access is denied for that user. The current servicename is substituted for %S . This is useful in the [homes] section. See also invalid users Default: No valid users list (anyone can login) Example: valid users = greg, @pcusers