Is Active Directory port 389 secure enough to talk to Cold Fusion?

I am currently (in development, not production) using a page that makes a CFLDAP call to our AD server.  I know that the secure port on AD is not on (any calls to the standard secure port are rejected), and no certificates have been installed on the CF server.

I need to ensure the powers that be that login/pass info sent from my CF page is secure when it makes the cfldap call. IThe CF server and the AD machine are not on the same subnet, so that is out. If it is not secure enough, What does one do to ensure this security?

I am kind of doing the AD guys work for them. They are clueless on if AD had a secure port at all.
I know how to make the CFLDAP calls, I just need to know about security. Code is atttached.

Thanks much for any help. Start Free Trial

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:

<cfldap action="query" 
           server="dc001...." 
		   port=389
	
           name="Results" 
           start="DC=something,"
           filter="(&(objectclass=user)(SamAccountName=#form.user#))"
           username="#form.user#@blah.net" 
           password="#form.pass#" 
           attributes = "cn,o,l,st,sn,c,mail,telephonenumber, givenname,homephone, streetaddress, postalcode, SamAccountname, physicalDeliveryOfficeName, department, organization, employeeID, password">