Changes

'''Telnet''' - Telnet provides remote terminal access to your system. It does not use encryption and use is strongly discouraged. Leave this disabled and use SSH instead fopr remote access.

'''WWW (HTTP)''' - If you are hosting a web serv eron your Ubuntu Linux System you will need to enable HTTP traffic through the firewall to enable web page requests to reach the http server. If you do not plan to host a web server leave this disabled. Note that the Apache web server is not installed by default on Ubuntu Linux.