Warning W503 - Some simple IP services are enabled. The simple services include Echo, Discard, Day Time, Quote of the Day and so on. While most UNIX workstations enable them by default, most of the time they are not required.
Warning W503 - Some simple IP services are enabled. The simple services include Echo, Discard, Day Time, Quote of the Day and so on. While most UNIX workstations enable them by default, most of the time they are not required.
Fix: Uninstall or disable them unless you really need them.
For more information, please see the (FAQ).