The system must not process Internet Control Message Protocol (ICMP) timestamp requests.

From HP-UX 11.31 Security Technical Implementation Guide

Part of GEN003602

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-35022r1_rule The system must not process Internet Control Message Protocol (ICMP) timestamp requests.

Vulnerability discussion

The processing of ICMP timestamp requests increases the attack surface of the system.

Check content

Fix text

Disable ICMP Timestamp responses on the system. # ndd -set /dev/ip ip_respond_to_timestamp 0 Edit /etc/rc.config.d/nddconf and add/set: TRANSPORT_NAME[x]=ip NDD_NAME[x]=ip_respond_to_timestamp NDD_VALUE[x]=0

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.