How to use LDAP to authenticate ?

ok you are right.

So I have tried using the syntax below

in the application.cfm file a single line entry

<CFAPPLICATION NAME="eOPS" SESSIONMANAGEMENT="Yes">

and code in the program similar to , a detailed code copy is attached.

<cfparam name="isAuthenticated" default="false">  

<cfparam name="logindomain" default="tw">  

<cfparam name="ldapServer" default="org.ad.city.aa">  

<cfparam name="dcStart" default="DC=city,DC=aa">    

<cfif IsDefined("form.username") AND form.username is not "" AND IsDefined("form.password") AND form.password is not "">      

   <cftry>          

         <cfldap action="QUERY"          

               name="auth"          

               attributes="samAccountName"          

               start="#dcStart#"          

               scope="SUBTREE"          

               maxrows="1"          

               server="#ldapServer#"          

               username="#logindomain#\#form.username#"          

               password="#form.password#">          

         <cfset isAuthenticated="true">             

      <cfcatch type="ANY">              

         <cfset isAuthenticated="no">          

      </cfcatch>      

   </cftry>  

</cfif>    

<cfoutput>      

   <cfif isAuthenticated>          
         <p>You are authenticated:</p> #isauthenticated#      
    #Form.UserName#



<cfset Session.UserName = #Form.UserName#>
<cfset Session.password = #LCase(Form.Password)#>
<cfset Session.back = 0>
     <!---  --->	         <cfif dbtype is 'oracle'>
				<cfquery name="FindRole" datasource="#datasource#" username="#Session.UserName#" password="#Session.password#">
                SELECT * FROM DBA_ROLE_PRIVS WHERE GRANTEE = '#Ucase(form.username)#' AND (GRANTED_ROLE = 'PMD_ADMIN' OR GRANTED_ROLE = 'OPERATOR' OR GRANTED_ROLE = 'MANAGER' OR GRANTED_ROLE = 'VIEWER') 
                </cfquery>
				<cfelseif dbtype is 'sqlserver'>
 				<cfquery name="FindRole" datasource="#datasource#" username=#Session.UserName# password=#Session.password#>
                select name 
				from sysusers 
				where uid in 
				     (select groupuid from sysmembers where memberuid = (select uid from sysusers where LOWER(name) = '#form.username#'))
				</cfquery>
				</cfif>
			
<cfif dbtype is 'oracle'>
	  <CFIF findrole.granted_role is 'MANAGER'>
		<cfset session.role = "manager">
	  <CFELSEIF Session.Username is 'dbo'>
		<cfset session.role = "owner">
	  <CFELSEIF findrole.granted_role is 'OPERATOR'>
		<cfset session.role = "operator">
	  <CFELSEIF findrole.granted_role is 'VIEWER'>
		<cfset session.role = "viewer">
	  <CFELSEIF findrole.granted_role is 'ADMIN'>
		<cfset session.role = "admin">
	  <CFELSE>	  
<script>
alert('Your user account has not been assigned a role, please contact your eAS administrator.');
document.location = 'default.cfm';
</script>
	  </CFIF>
<cfelseif dbtype is 'sqlserver'>

<cfset checkforrole = 0>

<cfloop query="FindRole">
<cfif Find("viewer",name) GT 0>
<cfset Session.role = "viewer">
<cfset checkforrole = 1>
</cfif>
</cfloop>

<cfloop query="FindRole">
<cfif Find("operator",name) GT 0>
<cfset Session.role = "operator">
<cfset checkforrole = 1>
</cfif>
</cfloop>

<cfloop query="FindRole">
<cfif Find("manager",name) GT 0>
<cfset Session.role = "manager">
<cfset checkforrole = 1>
</cfif>
</cfloop>

<cfloop query="FindRole">
<cfif Find("administrator",name) GT 0>
<cfset Session.role = "admin">
<cfset checkforrole = 1>
</cfif>
</cfloop>

<cfloop query="FindRole">
<cfif Find("db_owner",name) GT 0>
<cfset Session.role = "admin">
<cfset checkforrole = 1>
</cfif>
</cfloop>

<cfif checkforrole is 0>
<script>
alert('Your user account has not been assigned a role, please contact your eAS administrator.');
document.location = 'default.cfm';
</script>
</cfif>

</cfif>

<CFLOGINUSER name="#Session.UserName#" password="#Session.Password#" roles="">

<cfif dbtype is 'oracle'>
 <cfquery name="LookUp" datasource="#datasource#" username=#Form.UserName# password=#Form.password#>
  SELECT max(ipn) FROM dbo.look_up 
 </cfquery>
<cfelseif dbtype is 'sqlserver'>
 <cfquery name="LookUp" datasource="#datasource#" username="#Form.UserName#" password="#Form.password#">
  SELECT * FROM dbo.look_up
 </cfquery>
</cfif>
<-- -->
<cftry>
<script>
document.location = "main.cfm"
</script>
 <cfcatch type="any">
        Error: <cfoutput>#cfcatch.message#</cfoutput>
    </cfcatch>
</cftry>
		 

		 
		 
		 
   <cfelse>          
   #isauthenticated#  
      <p>Welcome !      
    
   </cfif>      

<form action="#cgi.script_name#" method="POST">      

   <p>Enter your login and pwd to see if you authenticate      

   <p>Username #logindomain#\<input type="Text" name="username" <cfif (IsDefined("form.username") AND form.username is not "")>value="#form.username#"</cfif>>      

   <br>password<input type="password" name="password" <cfif (IsDefined("form.password") AND form.password is not "")>value="#form.password#"</cfif>>      

   <br><input type="Submit" value="Login" name="">      

</form>  

</cfoutput>