Hi I am facing the same problem once again, the authentication from the browser appears repeatedly and gives a authentication error. cache.log reports "Squid_Ldap_Auth error: Cant Contact LDAP Server". This time I made sure things are fine with Msbox and with a nmap, I could see the ldap ports in msbox and a netstat shows me a connection established to msbox ldap port. Also I could successfully telnet into the msbox ldap port from squid box. Also I could use ldapsearch tool without any trouble. As previously Marc suggested to telnet msbox 445 port is working without any problem. I restarted my msbox like the previously but this time I am still getting the same error. Anyone can give me some idea what might be the problem? Thanx in advance Babs __________________________________ Yahoo! Mail Mobile Take Yahoo! Mail with you! Check email on your mobile phone. http://mobile.yahoo.com/learn/mail