Help with apache and ldap authentication

[Allen Chen]

Bliss, Aaron wrote:
> I'm running redhat 3 es, apache and all modules including mod_authz_ldap
> are from system rpm's; I'm attempting to restrict access to a directory
> and would like to use ldap authentication; below is the relevant section
> of my httpd.conf file; I'm getting the box to enter my credentials when
> going to the web page, but it seems to be failing; any ideas?  Thanks
> very much. 
>
> <directory /webroot/www/nessus_summary>
>  AuthType Basic
>  AuthName "Private Area"
> # AuthUserFile /usr/local/sbin/htusers
>  AuthzLDAPEngine on
>  AuthzLDAPServer "al-lnx-s11.preferredcare.org"
>  AuthzLDAPBindDN "ou=users,dc=preferredcare,dc=org"
>  #AuthzLDAPMapBase "ou=users,dc=preferredcare,dc=org"
>  AuthzLDAPAuthoritative on
>  AuthzLDAPSetAuthorization on
>  Require valid-user
> </directory>
>
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>
>   

Can you ping ldap server  al-lnx-s11.preferredcare.org from apache machine?