Squid authenticate in NTLMS not in KERBEROS

[Mohamed Navas <vmnavas@xxxxxxxxx>]

Hi,

I have setup the squid authentication with windows 2003 Domain
controller. But it's working well with NTLM, but failed with kerberso
..getting following error:-

=====================================================================
2012/07/02 15:07:17| squid_kerb_auth: ERROR: gss_accept_sec_context()
failed: Unspecified GSS failure.  Minor code may provide more
information.
2012/07/02 15:07:17| negotiate_wrapper: Return 'BH
gss_accept_sec_context() failed: Unspecified GSS failure.  Minor code
may provide more information.
'
2012/07/02 15:07:17| authenticateNegotiateHandleReply: Error
validating user via Negotiate. Error returned 'BH
gss_accept_sec_context() failed: Unspecified GSS failure.  Minor code
may provide more information

=======================================================================

mr krb5.conf file is:-

[logging]
 default = FILE:/var/log/krb5libs.log
 kdc = FILE:/var/log/krb5kdc.log
 admin_server = FILE:/var/log/kadmind.log

[libdefaults]
 default_realm = DXBPET.SYSNET.ROOT
 dns_lookup_realm = false
 dns_lookup_kdc = false
 ticket_lifetime = 24h
 renew_lifetime = 7d
 forwardable = true
#default_keytab_name = /etc/squid/HTTP.keytab
#allow_weak_crypto = yes


; for Windows 2003
      default_tgs_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
      default_tkt_enctypes = rc4-hmac des-cbc-crc des-cbc-md5
      permitted_enctypes = rc4-hmac des-cbc-crc des-cbc-md5

[realms]
 DXBPET.DUBAIPETROLEUM.ROOT = {
  kdc = dxbjadc12.dxbpet.sysnet.root
  admin_server = dxbjadc12.dxbpet.sysnet.root
  kdc = 10.97.8.122
 }

[domain_realm]
 .dxbpet.sysnet.root = DXBPET.SYSNET.ROOT
 dxbpet.sysnet.root = DXBPET.SYSNET.ROOT