Hi Guys, I am configuring Squid Version 2.6.STABLE5 in Server1(192.168.60.10) and OpenLDAP in Server2(192.168.41.11), both using OpenSuse 11. When I ran this command on Server1: # /usr/sbin/squid_ldap_auth -R -v 3 -b "dc=mydom,dc=com" -D "cn=administrator,dc=mydom,dc=com" -w "mypass" -f "(&(objectClass=account)(uid=%s))" -H ldap://192.168.41.11 and I entered username & password, it turned OK. But when I put those line in squid.conf I get infinite authentication loop. Here is some of my squid.conf : auth_param basic program /usr/sbin/squid_ldap_auth -R -v 3 -b "dc=mydom,dc=com" -D "cn=administrator,dc=mydom,dc=com" -w "mypass" -f "(&(objectClass=account)(uid=%s))" -H ldap://192.168.41.11 auth_param basic children 5 auth_param basic realm Web-Proxy auth_param basic credentialsttl 1 hours acl CONNECT method CONNECT http_access allow manager localhost http_access deny manager http_access allow localhost http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow PURGE localhost http_access deny PURGE acl ldap-auth proxy_auth REQUIRED http_access allow ldap-auth http_access deny all http_reply_access allow all icp_access allow lan icp_access deny all miss_access allow all #---- end Please help. Thanks in advance for your help. -Dex-