-The client/server protocol does not yet have any authentication mechanism. It
-is likely that authentication and encryption will be added in a future version,
-but for the time being it is the administrator's responsibility to secure the
-traffic from/to the daemon!
+If your rrdtool installation was built with libwrap then you can use
+hosts_access to restrict client access to the rrdcache daemon. For more
+information on how to use hosts_access to restrict access to the rrdcache
+daemon you should read the hosts_access(5) man pages.