The echo daemon must be disabled on AIX.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215391 | AIX7-00-003086 | SV-215391r958478_rule | Medium |
| Description |
| The echo service can be used in Denial of Service or SMURF attacks. It can also be used by someone else to get through a firewall or start a data storm. The echo service is unnecessary and it increases the attack vector of the system. |
| STIG | Date |
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 |
Details
| Check Text (C-16589r294624_chk) |
| Check the /etc/inetd.conf for TCP and UDP echo service entries using command: # grep echo /etc/inetd.conf | grep -v \# If there is any output from the command, this is a finding. |
| Fix Text (F-16587r294625_fix) |
| In "/etc/inetd.conf", comment out the "echo" entries by running commands: # chsubserver -r inetd -C /etc/inetd.conf -d -v 'echo' -p 'tcp' # chsubserver -r inetd -C /etc/inetd.conf -d -v 'echo' -p 'udp' Restart inetd: # refresh -s inetd |