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:
Users and Groups
Access control is based on users and groups.
Users are defined by the user topics in the Main web, i.e. TWikiGuest
Groups are defined by group topics in the Main web, i.e. TWikiAdminGroup
* Set GROUP = Main.SomeUser, Main.OtherUser, Main.SomeOtherGroup
* Set ALLOWTOPICCHANGE = Main.TWikiAdminGroup
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.
Define one or both of these variables in a topic, preferably at the end of the topic:
DENYTOPICCHANGE defines users or groups that are not allowed to make changes to the topic. It is a comma delimited list of users and groups. Example:
* Set DENYTOPICCHANGE = Main.SomeBadBoy, Main.SomeBadGirl, Main.SomeHackerGroup
ALLOWTOPICCHANGE defines users or groups that are allowed to make changes to the topic. It is a comma delimited list of users and groups. Example:
* Set ALLOWTOPICCHANGE = Main.SomeGoodGuy, Main.SomeGoodGirl, Main.TWikiAdminGroup
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.
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.
Define one or both of these variable in the WebPreferences topic:
The same rules apply like the one for Access Control for Individual Topics; with these additions:
Read Access Restriction for a Whole TWiki Web
You can define restrictions of who is allowed to view a TWiki web.
Define one or both of these variable in the WebPreferences topic:
Notes for read access restriction:
.htaccess
file.
view
script non authenticated in the .htaccess
file.
$doRememberRemoteUser
flag in wikicfg.pm
as described in TWiki Authentication. TWiki will now remember the IP address of an authenticated user.
view
script to viewauth
(or better, create a symbolic link)
viewauth
script in the .htaccess
file.
view
script to the viewauth
script once (this hapens only if the user has never edited a topic). Doing so will ask for authentication. The viewauth
script shows the requested topic if the user could log on and if the user is authorized to see that web.
NOSEARCHALL
variable in its WebPreferences, like:
Related topics: TWikiPreferences, WebPreferences (in every web), TWikiAdminGroup, TWikiGroups
-- PeterThoeny - 20 Jan 2001