Task overview: Completing WebGate and filter installation:
You must make sure that the Domino Web Server can use the WebGate DLL. You need to edit the enter the name or names of the DLL/DLLs (DSAPI libraries) to be called for authentication in the DSAPI filter file names field of the HTTP tab under the Internet Protocols tab in the Server document.
You can select one of the following filters to install the filter:
Through a Web browser and names.nsf (option 1)
Through a Lotus Notes workstation and the Address Book (option 2)
Option 1: To set up the DSAPI filter to access names.nst:
Go to the names.nsf URL and log in. For example:
http://hostname:port/names.nsf
Click the Server-Servers link.
A Java applet will be loaded.
Select a server from those listed.
Click the Edit Server link to go to Edit mode.
Click the Internet Protocols link.
By default, the HTTP tab is selected and information is displayed in Edit mode.
Look for DSAPI where it says "DSAPI filter file names:", then type in the absolute path to the libwebgate.so file.
Save your changes.
Restart the Domino http server task.
Option 2: to access the Address Book through Lotus Notes: