r24 - 2012-10-25 - 05:39:23 - SteveKosteckeYou are here: NTP >  Main Web > WebPreferences
NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.

ntp-4.2.8p11 was released on 27 February 2018. It addresses 2 low-/medium-, 1 informational-/medium-, and 2 low-severity security issues in ntpd, 1 medium-severity security issue in ntpq, and provides over 65 non-security bugfixes and other improvements over 4.2.8p10.

Please see the NTP Security Notice for vulnerability and mitigation details.

Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.

Main Web Preferences

The following settings are web preferences of the Main web. These preferences overwrite the site-level preferences in TWikiPreferences, and can be overwritten by user preferences (your personal topic, eg: TWikiGuest in the Users web).


  • List of topics of the NTP.Main web:
  • Caching
    • Set USECACHE = on

  • Web specific background color: (Pick a lighter one of the StandardColors)

  • List this web in the SiteMap:
    • If yes, Set SITEMAPLIST = on, and add the "what" and "use to..." description for the site map. Make sure to list only links that include the name of the web, e.g. Main.Topic links.
    • Set SITEMAPLIST = on
    • Set SITEMAPWHAT = The home of the NTP Public Services Project... User Support, Time Servers, Developement
    • Set SITEMAPUSETO = ... the NTP Public Services Project

  • Exclude web from a web="all" search: (Set to on for hidden webs)

  • Prevent automatic linking of WikiWords and acronyms (if set to on); link WikiWords (if empty); can be overwritten by web preferences:
    • Set NOAUTOLINK =
    • Note: Use the [[...][...]] syntax to link topics in case you disabled WikiWord linking. The <noautolink> ... </noautolink> syntax can be used to prevents links within a block of text.

  • Web preferences that are not allowed to be overridden by user preferences:


  • A preference is defined as:
    6 spaces * Set NAME = value
  • Preferences are used as TWikiVariables by enclosing the name in percent signs. Example:
    • When you write variable %WEBBGCOLOR% , it gets expanded to #FFEFA6 .
  • The sequential order of the preference settings is significant. Define preferences that use other preferences first, i.e. set WEBCOPYRIGHT before WIKIWEBMASTER since %WEBCOPYRIGHT% uses the %WIKIWEBMASTER% variable.
  • You can introduce new preferences variables and use them in your topics and templates. There is no need to change the NTP engine (Perl scripts).

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