So, I set the following in about:config (Firefox): *network.auth.use-sspi: false *network.negotiate-auth.gsslib: C:\Program Files\MIT\Kerberos\bin\gssapi32.dll *network.negotiate-auth.using-native-gsslib: false Then I got in /var/log/squid/cache.log: squid_kerb_auth: gss_acquire_cred() failed: Unspecified GSS failure. Minor code may provide more information. No principal in keytab matches desired name After searching the mailinglists, I saw that the principal did exist but I had 2 keytab files. One of them was old and squid used the old one. Now, Firefox works! Great. As for IE, it shows a login dialog, when entering username@REALM I get: 2010/09/28 11:44:28| squid_kerb_auth: Got 'YR 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' from squid (length: 755). 2010/09/28 11:44:28| squid_kerb_auth: parseNegTokenInit failed with rc=102 2010/09/28 11:44:28| squid_kerb_auth: gss_accept_sec_context() failed: Unspecified GSS failure. Minor code may provide more information. Key table entry not found So, IE does not use the MIT kerberos ticket I created. Is there a way to configure it? Thanks. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Simple-Kerberos-Squid-configuration-received-type-1-NTLM-token-tp2553379p2717106.html Sent from the Squid - Users mailing list archive at Nabble.com.