This entry starts the echo service when required. This service sends back data received by it on a specified port. The echo service sends back data received by it on a specified port. This can be misused by an attacker to launch DoS attacks or Smurf attacks by initiating a data storm and causing network congestion. The service is used for testing purposes and therefore must be disabled if not required.
Solution
In /etc/inetd.conf, comment out the echo entries- chsubserver -r inetd -C /etc/inetd.conf -d -v 'echo' -p 'tcp'