.htaccess allow access to one file, deny the rest.

[Doug Hairfield <doug.hairfield@xxxxxxx>]

Fedora Core 4/apache2.0.59

Is it possible to use an htaccess file to deny access to everything in a directory EXCEPT one particular file and allow access to that file via IP address?  I have a script that needs to be able to hit http://someurl/nagios/cgi-bin/tac.cgi.  I am using the following .htaccess file to restrict access to our nagios page to a passwd file but allow access to the tac.cgi file.  I can't seem to find an example anywhere for what I am doing.

<Directory /usr/local/nagios/sbin/>

   Options ExecCGI

   SSLRequireSSL

   order deny,allow

   AuthType Basic

   AuthUserFile /usr/local/nagios/etc/passwd

   AuthName "nagios"

   require valid-user

<Files tac.cgi>

   Order Allow,Deny

   Allow from "SOME IP"

</Files>

</Directory>

Unfortunately, I am getting a 403 error with this config in place.

--Doug