[squid-users] Help setting up squid to authenticate through pam

I need help how to setup squid to authenticate using pam.

I am new to squid. I am using Redhat 6.2 and squid 2.3. I would like to
limit access through squid-cache by authenticating the users through there
account password already on the local server (on the same machine).

I have tried to add the following lines to my squid.conf:
-------------------------------------
authenticate_program pam_auth shadow
authenticate_children 10
authenticate_ttl 3600
authenticate_ip_ttl 0
acl password proxy_auth REQUIRED
acl user1 src 10.30.0.5/255.255.255.255
http:_access allow user1 password
--------------------------------------
This doesnt work. Where am I going wrong??

-- 
Fred Kamwaza
University of Malawi
The Polytechnic
P/B 303, Chichiri, Blantyre 3
-------------------------------------
Tel: (265) 670 411 (o); (265) 842 891 (m)
Fax: (265) 670 578
email: fred@sdnp.org.mw
URL: http://poly.sdnp.org.mw