I have a simple Apache setup that works fine when I create a keytab on a domain level authentication works fine. When I create a keytab at the forest level authentication does not work. I get the following error message. Does anyone know what I am doing wrong here? I validated there is the SPN is unique on the AD side.
Our Network Security folks have mandated that we "Kerberize" our systems to allow them to perform an authenticated scan. This consists of instructions to change /etc/pam.d/sshd from:
# sshd: auth account password session
auth optional pam_krb5.so use_kcminit
auth optional ... (0 Replies)
I'm fairly new to UNIX-land, and one of my first assigned tasks was to try to set up Kerberos authentication on an unused partition. Hopefully everything makes sense, but please let me know if any clarification is needed with any of it.
AIX 7.1, and while I found various docs on the subject, a... (11 Replies)
Dear Expert,
i have linux box that is running in the windows domain, BUT did not being a member of the domain. as I am not the System Administrator so I have no control on the server in the network, such as modify dns entry , add the linux box in AD and domain record and so on that relevant.
... (2 Replies)
I am in the process of developing a application that needs to be able to authenticate users details with a kerberos server, which is proving to be rather difficult. There seems to be a lack of good information on how to do this using the MIT kerberos api.
Can anyone point me in the right... (0 Replies)
I have 2 servers (lft1 and lft3) running AIX 5.3 ML 5. Both are installed with krb5.client.rte 1.4.0.4 and openssh.base.server 4.3.0.5300.
I have configured some of the users on both servers to authenticate against our Windows 2003 Active Directory. From my PC, I can use telnet to login... (1 Reply)
I have installed Kerberos security in my UNIX system but I need to disable because of an application conflict with Kerberos.
So Anybody ca tell me how can I disable it?
Thank you (1 Reply)
ipa-getkeytab(1) IPA Manual Pages ipa-getkeytab(1)NAME
ipa-getkeytab - Get a keytab for a Kerberos principal
SYNOPSIS
ipa-getkeytab -s ipaserver -p principal-name -k keytab-file [ -e encryption-types ] [ -q ] [ -D|--binddn BINDDN ] [ -w|--bindpw ] [
-P|--password PASSWORD ]
DESCRIPTION
Retrieves a Kerberos keytab.
Kerberos keytabs are used for services (like sshd) to perform Kerberos authentication. A keytab is a file with one or more secrets (or
keys) for a Kerberos principal.
A Kerberos service principal is a Kerberos identity that can be used for authentication. Service principals contain the name of the ser-
vice, the hostname of the server, and the realm name. For example, the following is an example principal for an ldap server:
ldap/foo.example.com@EXAMPLE.COM
When using ipa-getkeytab the realm name is already provided, so the principal name is just the service name and hostname (ldap/foo.exam-
ple.com from the example above).
WARNING: retrieving the keytab resets the secret for the Kerberos principal. This renders all other keytabs for that principal invalid.
This is used during IPA client enrollment to retrieve a host service principal and store it in /etc/krb5.keytab. It is possible to retrieve
the keytab without Kerberos credentials if the host was pre-created with a one-time password. The keytab can be retrieved by binding as the
host and authenticating with this one-time password. The -D|--binddn and -w|--bindpw options are used for this authentication.
OPTIONS -s ipaserver
The IPA server to retrieve the keytab from (FQDN).
-p principal-name
The non-realm part of the full principal name.
-k keytab-file
The keytab file where to append the new key (will be created if it does not exist).
-e encryption-types
The list of encryption types to use to generate keys. ipa-getkeytab will use local client defaults if not provided. Valid values
depend on the Kerberos library version and configuration. Common values are: aes256-cts aes128-cts des3-hmac-sha1 arcfour-hmac
des-hmac-sha1 des-cbc-md5 des-cbc-crc
-q Quiet mode. Only errors are displayed.
--permitted-enctypes
This options returns a description of the permitted encryption types, like this: Supported encryption types: AES-256 CTS mode with
96-bit SHA-1 HMAC AES-128 CTS mode with 96-bit SHA-1 HMAC Triple DES cbc mode with HMAC/sha1 ArcFour with HMAC/md5 DES cbc mode with
CRC-32 DES cbc mode with RSA-MD5 DES cbc mode with RSA-MD4
-P, --password
Use this password for the key instead of one randomly generated.
-D, --binddn
The LDAP DN to bind as when retrieving a keytab without Kerberos credentials. Generally used with the -w option.
-w, --bindpw
The LDAP password to use when not binding with Kerberos.
EXAMPLES
Add and retrieve a keytab for the NFS service principal on the host foo.example.com and save it in the file /tmp/nfs.keytab and retrieve
just the des-cbc-crc key.
# ipa-getkeytab -s ipaserver.example.com -p nfs/foo.example.com -k /tmp/nfs.keytab -e des-cbc-crc
Add and retrieve a keytab for the ldap service principal on the host foo.example.com and save it in the file /tmp/ldap.keytab.
# ipa-getkeytab -s ipaserver.example.com -p ldap/foo.example.com -k /tmp/ldap.keytab
Retrieve a keytab using LDAP credentials (this will typically be done by ipa-join(1) when enrolling a client using the
ipa-client-install(1) command:
# ipa-getkeytab -s ipaserver.example.com -p host/foo.example.com -k /etc/krb5.keytab -D fqdn=foo.example.com,cn=comput-
ers,cn=accounts,dc=example,dc=com -w password
EXIT STATUS
The exit status is 0 on success, nonzero on error.
0 Success
1 Kerberos context initialization failed
2 Incorrect usage
3 Out of memory
4 Invalid service principal name
5 No Kerberos credentials cache
6 No Kerberos principal and no bind DN and password
7 Failed to open keytab
8 Failed to create key material
9 Setting keytab failed
10 Bind password required when using a bind DN
11 Failed to add key to keytab
12 Failed to close keytab
IPA Oct 10 2007 ipa-getkeytab(1)