ISAPI Filter for authenticating against OpenLDAP

[Dan Luther <dan.luther@dfrontiers.com>]

Good morning!

Is there available an ISAPI filter for authenticating against OpenLDAP?
I've found one, but is a bit restrictive in that per server, the
grouping is global with no apparent way to select different keys for
different virtual hosts.

My ideal goal is to have a mixed group of NT/IIS and Solaris/Apache web
servers authenticating against the OpenLDAP server. Naturally, the
Solaris/Apache authentication mechanism is well exploited, but the
NT/IIS seems ... limited.

Don't want to reinvent the wheel!

-- Dan