Hi, I was trying to setup squid on fc7. Version 2.6.STABLE16. I have a domain setup in win 2003 server with about 20 users (abcgroup.local), the IP address of the domain controller being 192.168.10.3. I have a group(abcgroup), which has 3 companys.(Cmp1, Cmp2, Cmp3) Now, I am setting all this up assuming I could use the squid_ldap_auth param to query the domain to authenticate the user without installing a ldap server on the DC. I tried to research on openLdap but I am not sure if I sould be using it on the win server. I am pretty new to using server 2003 and using squid for the first time. I'm not quite sure if the domain controller should have ldap setup by default OR if I will have to install it (openLdap) to get the squid proxy to authenticate the user. (I am trying a transparent auth so that I could view the logs in SARG such that I know which user logged in and accessed which web site) This is the authentication part of squid.conf. auth_param basic program /usr/lib/squid/squid_ldap_auth -R -b "dc=abcgroup,dc=local" -D "cn=Administrator,cn=Users,dc=abcgroup,dc=local" -w "password" -f sAMAccountName=%s -h 192.168.10.3 auth_param basic children 5 auth_param basic realm Vanderpolgroup.local auth_param basic credentialsttl 5 minutes I tried to use the squid_ldap_auth as a terminal command but it gave me an output. ERR everytime I hit the return key. Which is why, I am assuming that I cannot access the domain controller OR its not sending a query. I also tried using the ldap browser which does not display the entire tree that I have setup on the DC. I don't know if this information is enough. But if anyone can help me out it will be great. I am doing this as part of a school project. Thanks Sheldon