application specific user account management on LDAP client

I have a directory server 6.0 all set on Solaris 9 systems. On some client machines, I have application that requires a special user account created only for that application. For example, I have user account 'web' that is specific to a web application on a few machines, say, 5 machines. How do I setup on LDAP server so that the 'web' user account can only be authenticated on a few LDAP client machines, and be denied on other machines where there is no specific web application.

Thanks,

--xinhuan

[523 byte] By [xhza] at [2007-11-27 6:24:28]