r2 - 2007-01-01 - 22:20:20 - TWikiContributorYou are here: NTP >  TWiki Web > TWikiTipsOfTheDay > TWikiTip013
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-4.2.8p13 was released on 07 March 2019. It addresses 1 medium-severity security issue in ntpd, and provides 17 non-security bugfixes and 1 other improvements over 4.2.8p12.

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.

Preference settings

TWiki has four levels of preferences settings:

  1. Site-level settings: TWikiPreferences
    • Site name, proxy settings, access control, skin
  2. Web-level settings: located in each Web, e.g. WebPreferences topic
    • Web specific access control, navigation links, colors
  3. User-level settings: In each user's home page, e.g. TWikiGuest topic
    • Settings that are only in effect when this user is logged in, such as LINKTOOLTIPINFO
  4. Topic-level settings: Affecting current topic, for web applications

Preferences can be overridden by the next level down.

See More Tips...

-- TWiki:Main.PaulineCheung - 30 Jan 2005

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