The system must not have the echo service active.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-001436

SV-38711r1_rule The system must not have the echo service active.

Vulnerability discussion

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.

Check content

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

Edit /etc/inetd.conf and comment out the echo service lines for both TCP and UDP. Restart the inetd service. # refresh -s inetd

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.