Ubuntu 9.04 Samba Server Integrated With Active Directory Configuration (krb5.conf)

Discussion in 'HOWTO-Related Questions' started by Leow, Oct 9, 2009.

  1. Leow

    Leow New Member

    I am lost in krb5.conf

    While configuring, I don't know what to replace in these EXAMPLE.NET and
    yourdomaincontroller.example.net

    Code:
    [logging]
    
    default = FILE:/var/log/krb5.log
    kdc = FILE:/var/log/krb5kdc.log
    admin_server = FILE:/var/log/kadmin.log
    
    
    [libdefaults]
    default_realm = EXAMPLE.NET
    dns_lookup_realm = false
    dns_lookup_kdc = true
    ticket_lifetime = 24000
    
    [realms]
    EXAMPLE.NET = {
    kdc = yourdomaincontroller.example.net
    admin_server = yourdomaincontroller.example.net
    default_domain = EXAMPLE.NET }
    
    [domain_realm]
    .example.net = EXAMPLE.NET
    example.net = EXAMPLE.NET
    
     
  2. Leow

    Leow New Member

    I have tried replacing with my localhost name

    Code:
    leow-desktop
    
    after krb5 configuration, then testing here is what I got:
    Code:
    [email protected]:/home/leow# kinit [email protected]
    kinit(v5): Cannot contact any KDC for realm 'leow-desktop' while getting initial credentials
    
     
  3. bad_crow

    bad_crow New Member

    There is a difference between the hostname and the fully qualified hostname.
    leow-desktop is the hostname but not necessarily the fully qualified hostname (even though it is possible).
    What does the command hostname -f give you ?
    if you have something like leow-desktop.localdomain try with this, I think kerberos uses the fully qualified domain name.
     
  4. Leow

    Leow New Member

    Code:
    [libdefaults]
    	default_realm = ATHENA.MIT.EDU
    
    # The following krb5.conf variables are only for MIT Kerberos.
    	krb4_config = /etc/krb.conf
    	krb4_realms = /etc/krb.realms
    	kdc_timesync = 1
    	ccache_type = 4
    	forwardable = true
    	proxiable = true
    
    # The following encryption type specification will be used by MIT Kerberos
    # if uncommented.  In general, the defaults in the MIT Kerberos code are
    # correct and overriding these specifications only serves to disable new
    # encryption types as they are added, creating interoperability problems.
    #
    # Thie only time when you might need to uncomment these lines and change
    # the enctypes is if you have local software that will break on ticket
    # caches containing ticket encryption types it doesn't know about (such as
    # old versions of Sun Java).
    
    #	default_tgs_enctypes = des3-hmac-sha1
    #	default_tkt_enctypes = des3-hmac-sha1
    #	permitted_enctypes = des3-hmac-sha1
    
    # The following libdefaults parameters are only for Heimdal Kerberos.
    	v4_instance_resolve = false
    	v4_name_convert = {
    		host = {
    			rcmd = host
    			ftp = ftp
    		}
    		plain = {
    			something = something-else
    		}
    	}
    	fcc-mit-ticketflags = true
    
    [realms]
    	ATHENA.MIT.EDU = {
    		kdc = kerberos.mit.edu:88
    		kdc = kerberos-1.mit.edu:88
    		kdc = kerberos-2.mit.edu:88
    		admin_server = kerberos.mit.edu
    		default_domain = mit.edu
    	}
    	MEDIA-LAB.MIT.EDU = {
    		kdc = kerberos.media.mit.edu
    		admin_server = kerberos.media.mit.edu
    	}
    	ZONE.MIT.EDU = {
    		kdc = casio.mit.edu
    		kdc = seiko.mit.edu
    		admin_server = casio.mit.edu
    	}
    	MOOF.MIT.EDU = {
    		kdc = three-headed-dogcow.mit.edu:88
    		kdc = three-headed-dogcow-1.mit.edu:88
    		admin_server = three-headed-dogcow.mit.edu
    	}
    	CSAIL.MIT.EDU = {
    		kdc = kerberos-1.csail.mit.edu
    		kdc = kerberos-2.csail.mit.edu
    		admin_server = kerberos.csail.mit.edu
    		default_domain = csail.mit.edu
    		krb524_server = krb524.csail.mit.edu
    	}
    	IHTFP.ORG = {
    		kdc = kerberos.ihtfp.org
    		admin_server = kerberos.ihtfp.org
    	}
    	GNU.ORG = {
    		kdc = kerberos.gnu.org
    		kdc = kerberos-2.gnu.org
    		kdc = kerberos-3.gnu.org
    		admin_server = kerberos.gnu.org
    	}
    	1TS.ORG = {
    		kdc = kerberos.1ts.org
    		admin_server = kerberos.1ts.org
    	}
    	GRATUITOUS.ORG = {
    		kdc = kerberos.gratuitous.org
    		admin_server = kerberos.gratuitous.org
    	}
    	DOOMCOM.ORG = {
    		kdc = kerberos.doomcom.org
    		admin_server = kerberos.doomcom.org
    	}
    	ANDREW.CMU.EDU = {
    		kdc = vice28.fs.andrew.cmu.edu
    		kdc = vice2.fs.andrew.cmu.edu
    		kdc = vice11.fs.andrew.cmu.edu
    		kdc = vice12.fs.andrew.cmu.edu
    		admin_server = vice28.fs.andrew.cmu.edu
    		default_domain = andrew.cmu.edu
    	}
    	CS.CMU.EDU = {
    		kdc = kerberos.cs.cmu.edu
    		kdc = kerberos-2.srv.cs.cmu.edu
    		admin_server = kerberos.cs.cmu.edu
    	}
    	DEMENTIA.ORG = {
    		kdc = kerberos.dementia.org
    		kdc = kerberos2.dementia.org
    		admin_server = kerberos.dementia.org
    	}
    	stanford.edu = {
    		kdc = krb5auth1.stanford.edu
    		kdc = krb5auth2.stanford.edu
    		kdc = krb5auth3.stanford.edu
    		master_kdc = krb5auth1.stanford.edu
    		admin_server = krb5-admin.stanford.edu
    		default_domain = stanford.edu
    	}
    
    [domain_realm]
    	.mit.edu = ATHENA.MIT.EDU
    	mit.edu = ATHENA.MIT.EDU
    	.media.mit.edu = MEDIA-LAB.MIT.EDU
    	media.mit.edu = MEDIA-LAB.MIT.EDU
    	.csail.mit.edu = CSAIL.MIT.EDU
    	csail.mit.edu = CSAIL.MIT.EDU
    	.whoi.edu = ATHENA.MIT.EDU
    	whoi.edu = ATHENA.MIT.EDU
    	.stanford.edu = stanford.edu
    	.slac.stanford.edu = SLAC.STANFORD.EDU
    
    [login]
    	krb4_convert = true
    	krb4_get_tickets = false
    
    The above is the back up I have made. Cuz I have messed with the original one. Must we own a domain to configure this file?

    My hostname -f gives me leow-desktop, same as hostname gives me leow-desktop.
     
  5. Leow

    Leow New Member

    I'm repeating unanswered question. Can anyone at least confirm if my hostname isn't usable or I need a purchased domain name?

    Sorry, newbie here. Thanks..
     

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