PCI-10.4:: Difference between revisions

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Obtain and review the process for getting and distributing the correct time within the organization. Also obtain and review related system parameter settings for the sample of (insert number and/or description of sample) system components. Verify the following is included in the process and implemented:  
<blockquote style="background: #C8CDC7; padding: 1em; margin-left: 0.5em;">
<br>
:'''Synchronize all critical system clocks and times.'''<br>
<br>
::'''PCI-10.4:''' Obtain and review the process for getting and distributing the correct time within the organization. Also obtain and review related system parameter settings for the sample of (insert number and/or description of sample) system components. Verify the following is included in the process and implemented:  
<br>
:* NTP or similar technology is used for time synchronization.
:* Two or three central time servers within the organization receive external time signals (directly from a special radio, GPS satellites, or other external sources—based on International Atomic Time and UTC (formerly GMT)), peer with each other to keep accurate time, and share the time with other internal servers (i.e., internal servers should not be all be receiving time signals from external sources).
:* NTP is running the most recent version.
:* Specific external hosts are designated from which the time servers will accept NTP time updates (to prevent an attacker from changing the clock). Optionally, those updates can be encrypted with a symmetric key, and access control lists can be created that specify the IP addresses of client machines that will be provided with the NTP service (to prevent unauthorized use of internal time servers).
<br>
See [http://www.ntp.org ntp.org] for more information.
<br>
</blockquote>
<br>
'''Testing Procedures'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Insert testing guidance here.
</blockquote>
'''Testing Frequency'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Describe testing frequency here.
<br>
</blockquote>
 
'''Evidence Archive Location'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Insert hyperlink or location of evidence archive.
<br>
</blockquote>
 
'''Control Stewards Process Narrative'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
<p><font color=#008000>Provide control steward commentary indicating the formal methodology in place.</font></p>
 
<br>
'''Control Steward – Jon Doe'''
<br>
</blockquote>
 
'''Process Illustration'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Replace this test by inserting a process diagram, flowchart or other visual representation to illustrate the process narrative as necessary. Include a brief description of the process illustration.
<br>
</blockquote>
 
'''Control Status and Auditors Commentary'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
<p><font color=#008000>The control is effective.</font></p>
<br>
[[Image:greenlock.jpg]]<br>
<br>
Status is acceptable.
<br>
</blockquote>
 
'''Control Exception Commentary'''
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
Status is acceptable.
<br>
</blockquote>


:*NTP or similar technology is used for time synchronization.
'''Remediation Plan'''
:*Two or three central time servers within the organization receive external time signals (directly from a special radio, GPS satellites, or other external sources—based on International Atomic Time and UTC (formerly GMT)), peer with each other to keep accurate time, and share the time with other internal servers (i.e., internal servers should not be all be receiving time signals from external sources).
<blockquote style="background: white; border: 1px solid black; padding: 1em;">
:*NTP is running the most recent version.
Remediation is not required at this time.
:*Specific external hosts are designated from which the time servers will accept NTP time updates (to prevent an attacker from changing the clock). Optionally, those updates can be encrypted with a symmetric key, and access control lists can be created that specify the IP addresses of client machines that will be provided with the NTP service (to prevent unauthorized use of internal time servers).
<br>
</blockquote>
<br>


See [http://www.ntp.org ntp.org] for more information.
--[[User:Mdpeters|Mdpeters]] 15:57, 2 March 2007 (EST)

Revision as of 20:57, 2 March 2007


Synchronize all critical system clocks and times.


PCI-10.4: Obtain and review the process for getting and distributing the correct time within the organization. Also obtain and review related system parameter settings for the sample of (insert number and/or description of sample) system components. Verify the following is included in the process and implemented:


  • NTP or similar technology is used for time synchronization.
  • Two or three central time servers within the organization receive external time signals (directly from a special radio, GPS satellites, or other external sources—based on International Atomic Time and UTC (formerly GMT)), peer with each other to keep accurate time, and share the time with other internal servers (i.e., internal servers should not be all be receiving time signals from external sources).
  • NTP is running the most recent version.
  • Specific external hosts are designated from which the time servers will accept NTP time updates (to prevent an attacker from changing the clock). Optionally, those updates can be encrypted with a symmetric key, and access control lists can be created that specify the IP addresses of client machines that will be provided with the NTP service (to prevent unauthorized use of internal time servers).


See ntp.org for more information.


Testing Procedures

Insert testing guidance here.

Testing Frequency

Describe testing frequency here.

Evidence Archive Location

Insert hyperlink or location of evidence archive.

Control Stewards Process Narrative

Provide control steward commentary indicating the formal methodology in place.


Control Steward – Jon Doe

Process Illustration

Replace this test by inserting a process diagram, flowchart or other visual representation to illustrate the process narrative as necessary. Include a brief description of the process illustration.

Control Status and Auditors Commentary

The control is effective.


File:Greenlock.jpg

Status is acceptable.

Control Exception Commentary

Status is acceptable.

Remediation Plan

Remediation is not required at this time.


--Mdpeters 15:57, 2 March 2007 (EST)

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