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TWikiUserAuthentication 3 - 29 Aug 2001 - Main.MikeMannix
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TWiki Authentication

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TWiki does not authenticate users internally, it depends on the REMOTE_USER environment variable. This variable is set when you enable basic authentication or authentication via SSL (https protocol)
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TWiki does not authenticate users internally, it depends on the REMOTE_USER environment variable. This variable is set when you enable basic authentication or authentication via SSL (https protocol).
 
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TWiki keeps track who made changes to topics at what time. This gives a complete audit trail of changes.
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TWiki uses visitor identification to keep track of who made changes to topics at what time and to manage a wide range of personal site settings. This gives a complete audit trail of changes and activity.
 
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No special installation steps need to be performed in case the server is already autenticated. If not you can opt for one of these:
  • Forget about authentication. All changes will be registered as TWikiGuest user, e.g. you can't tell who made changes.
  • Use basic authentication for the edit and attach scripts. TWiki Installation Notes tells you more about that.
  • Use SSL to authenticate and secure the whole server.
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Authentication Options

 
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The REMOTE_USER environment variable is only set for the scripts that are under authentication. If for example the edit, save and preview scripts are authenticated, but not view, you would get your WikiName in preview for the %WIKIUSERNAME% variable, but view will show TWikiGuest instead of your WikiName.
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No special installation steps need to be performed if the server is already authenticated. If not, you have three remaining options to controlling user access:
  1. Forget about authentication. All changes are registered to TWikiGuest user, so you can't tell who made changes. Your site is completely open and public.
  2. Use Basic Authentication for the edit and attach scripts. This uses .htaccess and generates the familiar grey log-in window. TWiki Installation Notes has more.
  3. Use SSL to authenticate and secure the whole server.
 
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There is a way to tell TWiki to remember the user for the scripts that are not authenticated, e.g. for the case where the REMOTE_USER environment variable is not set. TWiki can be configured to remember the IP address / username pair whenever an authentication happens (edit topic, attach file). Once remembered, the non authenticated scripts like view will show the correct username instead of TWikiGuest. You can enable this by setting the $doRememberRemoteUser flag in TWiki.cfg. TWiki persistently stores the IP address / username pairs in file $remoteUserFilename, which is "$dataDir/remoteusers.txt" by default. Please note that this can fail in case the IP address changes due to dynamically assigned IP addresses or proxy servers.
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Tracking by IP Address

 
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Test: You are TWikiGuest.
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The REMOTE_USER environment variable is only set for the scripts that are under authentication. If, for example, the edit, save and preview scripts are authenticated, but not view, you would get your WikiName in preview for the %WIKIUSERNAME% variable, but view will show TWikiGuest instead of your WikiName.

There is a way to tell TWiki to remember the user for the scripts that are not authenticated, ex: in case the REMOTE_USER environment variable is not set. TWiki can be configured to remember the IP address/username pair whenever an authentication happens (edit topic, attach file). Once remembered, the non-authenticated scripts like view will show the correct username instead of TWikiGuest. You can enable this by setting the $doRememberRemoteUser flag in TWiki.cfg. TWiki persistently stores the IP address / username pairs in file $remoteUserFilename, which is "$dataDir/remoteusers.txt" by default. Please note that this can fail if the IP address changes due to dynamically assigned IP addresses or proxy servers.

Authentication Test: You are TWikiGuest (%WIKIUSERNAME%)

TWiki Username vs. Login Username

This section applies only if your TWiki is installed on a server that is both authenticated and on an intranet.

TWiki internally manages two usernames: Login username and TWiki username.

  • Login username: When you login to the intranet, you use your existing login username, ex: pthoeny. This name is normally passed to TWiki by the REMOTE_USER environment variable, and used by internally by TWiki. Login usernames are maintained by your system administrator.
  • TWiki username: Your name in WikiNotation, ex: PeterThoeny, is recorded when you register using TWikiRegistration; doing so also generates a personal home page in the Main web.

TWiki can automatically map an intranet username to a TWiki username, provided that the username pair exists in the TWikiUsers topic. This is also handled automatically when you register.

NOTE: To correctly enter a WikiName - your own or someone else's - be sure to include the Main web name in front of the Wiki username, followed by a period, and no spaces. Ex:
Main.WikiUsername or %MAINWEB%.WikiUsername
This points WikiUser to the TWiki.Main web, where user registration pages are stored, no matter which web it's entered in. Without the web prefix, the name appears as a NewTopic? everywhere but in the Main web.
 -- PeterThoeny - 16 Mar 2001
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-- MikeMannix? - 29 Aug 2001

Revision 3r3 - 29 Aug 2001 - 15:23:41 - MikeMannix?
Revision 2r2 - 16 Mar 2001 - 09:09:58 - PeterThoeny?
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