INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Problem Configuring Kerberos

Problem Configuring Kerberos

(OP)
Good Day!

I am trying to make a Proxy server that requires authentification on Active Directory
now I am having a problem configuring the Proxy Server's Kerberos

any help would really be appreciated. Thank you!!

Below is the error I am getting when using msktutil:

#############################################################################################################################################################################################################

root@BTSProxy:/etc/squid3# msktutil -c -b "CN-COMPUTERS" -s HTTP/BTSProxy -k /etc/squid3/PROXY.keytab --computer-name BTSPROXY-K --upn HTTP/BTSProxy --server DC2012r2set1.intranet.de --verbose
-- init_password: Wiping the computer password structure
-- create_fake_krb5_conf: Created a fake krb5.conf file: /tmp/.msktkrb5.conf-y06SIP
-- reload: Reloading Kerberos Context
-- finalize_exec: SAM Account Name is: BTSPROXY-K$
-- try_machine_keytab_princ: Trying to authenticate for BTSPROXY-K$ from local keytab...
-- try_machine_keytab_princ: Error: krb5_get_init_creds_keytab failed (Unsupported key table format version number)
-- try_machine_keytab_princ: Authentication with keytab failed
-- try_machine_keytab_princ: Trying to authenticate for host/btsproxy.intranet.de from local keytab...
-- try_machine_keytab_princ: Error: krb5_get_init_creds_keytab failed (Client not found in Kerberos database)
-- try_machine_keytab_princ: Authentication with keytab failed
-- try_machine_password: Trying to authenticate for BTSPROXY-K$ with password.
-- try_machine_password: Error: krb5_get_init_creds_keytab failed (Preauthentication failed)
-- try_machine_password: Authentication with password failed
-- try_user_creds: Checking if default ticket cache has tickets...
-- finalize_exec: Authenticated using method 4

-- ldap_connect: Connecting to LDAP server: DC2012r2set1.intranet.de try_tls=YES
-- ldap_connect: Connecting to LDAP server: DC2012r2set1.intranet.de try_tls=NO
SASL/GSSAPI authentication started
SASL username: administrator@INTRANET.DE
SASL SSF: 56
SASL data security layer installed.
-- ldap_connect: LDAP_OPT_X_SASL_SSF=56

-- ldap_get_base_dn: Determining default LDAP base: dc=INTRANET,dc=DE
-- init_password: Wiping the computer password structure
-- generate_new_password: Generating a new, random password for the computer account
-- generate_new_password: Characters read from /dev/udandom = 82
-- ldap_check_account: Checking that a computer account for BTSPROXY-K$ exists
-- ldap_check_account: Checking computer account - found
-- ldap_check_account: Found userAccountControl = 0x1000

-- ldap_check_account: Found supportedEncryptionTypes = 28

-- ldap_check_account: Found dNSHostName = btsproxy.intranet.de

-- ldap_check_account: Found Principal: HTTP/BTSProxy.intranet.de
-- ldap_check_account: Found Principal: host/btsproxy.intranet.de
-- ldap_check_account: Found User Principal: HTTP/BTSProxy.intranet.de
-- ldap_check_account_strings: Inspecting (and updating) computer account attributes
-- ldap_simple_set_attr: Calling ldap_modify_ext_s to set userPrincipalName to HTTP/BTSProxy@INTRANET.DE
-- ldap_simple_set_attr: ldap_modify_ext_s failed (Constraint violation)
-- ldap_set_supportedEncryptionTypes: No need to change msDs-supportedEncryptionTypes they are 28

-- ldap_set_userAccountControl_flag: Setting userAccountControl bit at 0x200000 to 0x0
-- ldap_set_userAccountControl_flag: userAccountControl not changed 0x1000

-- set_password: Attempting to reset computer's password
-- set_password: Try change password using user's ticket cache

-- ldap_get_pwdLastSet: pwdLastSet is 131297269925813776
-- set_password: Successfully set password, waiting for it to be reflected in LDAP.
-- ldap_get_pwdLastSet: pwdLastSet is 131297296586674661
-- set_password: Successfully reset computer's password
-- ldap_add_principal: Checking that adding principal HTTP/BTSProxy to BTSPROXY-K$ won't cause a conflict
Error: Another computer account (CN=BTSProxy,CN=Computers,DC=intranet,DC=de) has the principal HTTP/BTSProxy
Error: ldap_add_principal failed
-- execute: Updating all entries for btsproxy.intranet.de in the keytab WRFILE:/etc/squid3/PROXY.keytab

-- update_keytab: Updating all entires for BTSPROXY-K$
-- ldap_get_kvno: KVNO is 4
-- add_principal_keytab: Adding principal to keytab: BTSPROXY-K$
-- add_principal_keytab: Using salt of INTRANET.DEhostbtsproxy-k.intranet.de
-- add_principal_keytab: Adding entry of enctype 0x17
Error: krb5_kt_add_entry failed (Unsupported key table format version number)
-- ~KRB5Context: Destroying Kerberos Context

#####################################################################################################################################################################

Best Regards,
RR

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close