Whilst this relates to ISA I believe this is relevant to my question i.e. Safari = No to Kerberos: http://lists.apple.com/archives/client-management/2009/Nov/msg00032.html Would be grateful to hear of any other experiences thanks Nickcx -- View this message in context: http://n4.nabble.com/Squid-3-20-Kerberos-Authentication-working-except-for-Safari-on-Mac-tp1564702p1565821.html Sent from the Squid - Users mailing list archive at Nabble.com.