... Leave the view script non authenticated in the .htaccess file. Enable the $doRememberRemoteUser flag in wikicfg.pm as described in TWiki Authentication . TWiki will now remember the IP address of an authenticated user. ... Enable authentication for the viewauth script in the .htaccess file. ... When a user accesses a web where you enabled view restriction, TWiki will redirect from the view script to the viewauth script once (this hapens only if the user has never edited a topic). ...