Difference: TWikiAccessControl (6 vs. 7)

Revision 72001-03-16 - PeterThoeny

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TWiki Access Control

 TWiki allows you to define restrictions of who is allowed to view a TWiki web, make changes to topics or attach files.

IMPORTANT NOTE: Think twice before restricting read or write access to a web or a topic, because an open system where everybody can contribute is the essence of the WikiCulture. Experience shows that unrestricted write access works very well because:

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  • A topic revision can be undone by a member of the TWikiAdminGroup in case needed.
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Users and Groups
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Users and Groups

  Access control is based on users and groups.
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  • ALLOWTOPICCHANGE defines who is allowed to change the group topic; it is a comma delimited list of users and groups. You typically want to restrict that to the members of the group itself, so it should contain the name of the topic, i.e.
        * Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup
    for the TWikiAdminGroup topic. (This is to prevent users not in the group from editing the topic and gaining unauthorized membership to the group.)
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Write Access Restriction for Individual Topics
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Write Access Restriction for Individual Topics

  You can define restrictions of who is allowed to make changes to a topic or attach files to it.
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  DENYTOPICCHANGE is evaluated before ALLOWTOPICCHANGE. Access is denied if the authenticated person is in the DENYTOPICCHANGE list, or not in the ALLOWTOPICCHANGE list. Access is granted in case DENYTOPICCHANGE and ALLOWTOPICCHANGE is not defined.
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Write Access Restriction for a Whole TWiki Web
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Write Access Restriction for a Whole TWiki Web

  You can define restrictions of who is allowed to make changes to a TWiki web. This includes creating new topics, changing topics or attaching files.
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  • DENYTOPICCHANGE (in topic) overrides DENYWEBCHANGE (in WebPreferences)
  • ALLOWTOPICCHANGE (in topic) overrides ALLOWWEBCHANGE (in WebPreferences)
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Read Access Restriction for a Whole TWiki Web
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Read Access Restriction for a Whole TWiki Web

  You can define restrictions of who is allowed to view a TWiki web.
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  Related topics: TWikiPreferences, WebPreferences (in every web), TWikiAdminGroup, TWikiGroups
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-- PeterThoeny - 20 Jan 2001
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-- PeterThoeny - 16 Mar 2001
 
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