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The system must not have the echo service active.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-29507 | GEN009230 | SV-38711r1_rule | ECSC-1 | Medium |
| Description |
|---|
| The echo service can be used in Denial of Service or SMURF attacks. It can also used at 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 |
|---|---|
| AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE | 2016-06-01 |
Details
| Check Text ( C-37807r1_chk ) |
|---|
| Check the /etc/inetd.conf for TCP and UDP echo service entries. #grep echo /etc/inetd.conf | grep -v \# If the echo service is enabled, this is a finding. |
| Fix Text (F-33065r1_fix) |
|---|
| Edit /etc/inetd.conf and comment out the echo service lines for both TCP and UDP. Restart the inetd service. # refresh -s inetd |