Re: Squid and Kerberos problems

[Olivier CALVANO <o.calvano@xxxxxxxxx>]

hum a new problems ??

[root@gw]# msktutil --auto-update --verbose --computer-name ophtcysrv1v4-k -k /etc/squid/PROXY.keytab
 -- 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/urandom = 84
 -- get_dc_host: Attempting to find Domain Controller to use via DNS SRV record in domain MYDOMAIN.FR for procotol tcp
 -- get_dc_host: Found DC: dc122001.mydomain.fr
 -- get_dc_host: Canonicalizing DC through forward/reverse lookup...
Error: gethostbyaddr failed
 -- get_dc_host: Found Domain Controller:
Error: get_dc_host failed
 -- ~KRB5Context: Destroying Kerberos Context

2015-05-03 13:25 GMT+02:00 Markus Moeller <huaraz@xxxxxxxxxxxxxxxx>:

Did you compile msktutil or is it a package in centos ?

 

Markus

 

"Olivier CALVANO" <o.calvano@xxxxxxxxx> wrote in message news:CAJajPecQD+_1KRUfwa9eAC4iYAKapZBLyg-9vuueKLGWUecopQ@xxxxxxxxxxxxxx...

Hi

Thanks for your answer

CentOS Linux release 7.1.1503 (Core)

krb5-workstation-1.12.2-14.el7.x86_64
krb5-libs-1.12.2-14.el7.x86_64

regards

olivier

 

2015-05-03 0:25 GMT+02:00 Markus Moeller <huaraz@xxxxxxxxxxxxxxxx>:

Which OS and Kerberos version do you have ?  There might be some issue with the cache used KEYRING:persistent:0:0

Markus

 

"Olivier CALVANO" <o.calvano@xxxxxxxxx> wrote in message news:CAJajPefo3t8b1=_v5PFj3H0gq4Jk3OosuTW8gNHY7Z-Gs21qLg@xxxxxxxxxxxxxx...

Hi

I request your help because i want use NTLM/Kerberos for authenticate my user.

For NTLM, i use Winbind, no problems,

[root@gw]# wbinfo -t
checking the trust secret for domain MYADDOMAIN via RPC calls succeeded

but for Kerberos, i can't create the .keytab


[root@gw]# kinit MYUSERNAME
Password for MYUSERNAME@xxxxxxxxxxxxx:

[root@gw]# klist
Ticket cache: KEYRING:persistent:0:0
Default principal: MYUSERNAME@xxxxxxxxxxxxx

Valid starting       Expires              Service principal
02/05/2015 04:51:25  02/05/2015 14:51:25  krbtgt/MYADDOMAIN.FR@xxxxxxxxxxxxx
        renew until 09/05/2015 04:51:07

MYUSERNAME is the same account that i join the domain (net join) with winbind

after, i put:

msktutil -c -b "CN=COMPUTERS" -s HTTP/gw.srv1-v4.tcy.myinternetdomain.org -k /etc/squid/PROXY.keytab --computer-name OPHTCYSRV1V4-K --upn HTTP/gw.srv1-v4.tcy.myinternetdomain.org --server adserver1 --verbose

 

and i have a error:

[root@gw etc]# msktutil -c -b "CN=COMPUTERS" -s HTTP/gw.srv1-v4.tcy.myinternetdomain.org -k /etc/squid/PROXY.keytab --computer-name OPHTCYSRV1V4-K --upn HTTP/gw.srv1-v4.tcy.myinternetdomain.org --server adserver1 --verbose
-- 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 = 84
-- create_fake_krb5_conf: Created a fake krb5.conf file: /tmp/.msktkrb5.conf-jnxTuG
-- reload: Reloading Kerberos Context
-- finalize_exec: SAM Account Name is: OPHTCYSRV1V4-K$
-- try_machine_keytab_princ: Trying to authenticate for OPHTCYSRV1V4-K$ 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_keytab_princ: Trying to authenticate for host/gw.srv1-v4.tcy.myinternetdomain.org 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 OPHTCYSRV1V4-K$ with password.
-- create_default_machine_password: Default machine password for OPHTCYSRV1V4-K$ is ophtcysrv1v4-k
-- try_machine_password: Error: krb5_get_init_creds_keytab failed (Client not found in Kerberos database)
-- try_machine_password: Authentication with password failed
-- try_user_creds: Checking if default ticket cache has tickets...
-- try_user_creds: Error: krb5_cc_get_principal failed (No credentials cache found)
-- try_user_creds: User ticket cache was not valid.
Error: could not find any credentials to authenticate with. Neither keytab,
     default machine password, nor calling user's tickets worked. Try
     "kinit"ing yourself some tickets with permission to create computer
     objects, or pre-creating the computer object in AD and selecting
     'reset account'.
-- ~KRB5Context: Destroying Kerberos Context

same error if i change gw.srv1-v4.tcy.myinternetdomain.org to ophtcysrv1v4.myaddomain.fr

 

 

anyone know the origin of this error ?

thanks

Olivier

 

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