I've been considering deploying mod_auth_kerb on our internal web servers to enable SSO. The one obvious problem I can see is that it's an all-or-nothing approach, either all your domain users can access a site or not. Is it possible to combine mod_auth_kerb with something like mod_authnz_ldap to check for group membership in a particular group in LDAP? I'm guessing the KrbAuthoritative option would have something to do with this? Also, as I understand it, the module sets the username to be username@REALM after authentication, but of course in the directory the users are stored as the username only.

Furthermore, some internal sites we run such as trac already have a user profile linked to each username. Is there a way to resolve this, perhaps by stripping off the realm bit after authentication somehow? It's the whole point of the authn/authz separation in 2.2 that you can authenticate with one mechanism, and authorize with another. Authentication provides you with a setting of REMOTE_USER, which you then can use authz_ldap against. In addition, authn_ldap searches then for a user (converting the REMOTE_USER to a DN if found, using search criteria you have to specify - e.g. Searching for CN).

Then, when a DN has been found, you can specify requirements on the LDAP object. If all users accessing a resource must be in the same OU, you specify require ldap-dn ou=Managers, o=The Company.

Setup Kerberos Install MIT Kerberos. On Ubuntu the package manager can install this: sudo apt-get install krb5-user The dependencies for this package will provide the rest of the required files.

Edit /etc/krb5.conf [libdefaults] default_realm = ACME.LOCAL [domain_realm] acme.local = ACME.LOCAL [realms] ACME.LOCAL = { kdc = win2k3.acme.local admin_server = win2k3.acme.local Test your Kerberos configuration so far: • Ensure that you can ping between the Windows 2003 server and the linux server in both directions and using both the fully-qualified domain name (win2k3.acme.local) and the IP address. Capello dvd player universal remote codes manual. Note: You must be able to ping your Windows 2003 KDC using the fully-qualified domain name from the linux host.

M&S News and Insights Kerberos Module for Apache - mod_auth_kerb Download (mod auth kerb) Kerberos Module for Apache – mod_auth_kerb Download (mod auth kerb) In case you are having trouble finding the Kerberos Module for Apache like some of our customers have, we have decided to host it on our website as well. [Tomcat-users] mod_auth_kerb / mod_spnego on Windows; Maciej Matecki. Jun 26, 2009 at 10:03 pm: Hello, I have to run Kerberos with Apache + Tomcat on Windows. I tested everything in Linux and there everything works just great.

In the unlikely event you have mDNS enabled this will fail if your Active Directory domain ends in.local. If you try to work around the name resolution issue by entering the IP address in krb5.conf, the next test will succeed but Apache authentication will fail later with 'No principal in keytab matches desired name' in the Apache error log. • In a shell type kinit.LOCAL, entering an Active Directory username you know. If it is successful it will ask for the account's password and then exit without an error.

Use klist to view the Kerberos ticket that was just added to the machine. Setting up a keytab file Now switch to your Windows 2003 server and create a user account that will represent the HTTP service on the linux server. Let's use wikikerb. We will use ktpass from the Windows 2003 Support Kit to create a keytab file the linux server will need. At the command line, enter ktpass /out c: my.keytab /mapuser HTTP-user@acme.local /princ HTTP/wikisvr.acme.local@ACME.LOCAL /crypto RC4-HMAC-NT /pass passw0rd /ptype KRB5_NT_PRINCIPAL Note: Even if you created a CNAME to redirect wiki.acme.com to wikisvr.acme.local, and all your users will be entering wiki.acme.com, the principal name ( -princ) must still use the canonical DNS name.

This will not affect what your users need to type to get to the site. Copy the keytab file to the linux server and place it in /etc/apache2. Test the keytab file like so: kinit -k -t /etc/apache2/http.keytab HTTP/wikisvr.acme.local This should exit without any error messages, and this Kerberos ticket will now appear in klist. If you want to purge the ticket cache use kdestroy.

Alternatively, instead of using kinit, proceed to configuring mod_auth_kerb for Apache. For more information see the guide at. Setup mod-auth-kerb Once again the package manager works wonders: sudo apt-get install libapache2-mod-auth-kerb In /etc/apache2/conf.d/twiki.conf, add the entries for Kerberos authentication. Enter # in front of AuthType basic to disable plain text authentication. Order Deny, Allow Allow from all AuthType Kerberos KrbAuthRealms ACME.LOCAL KrbServiceName HTTP Krb5Keytab /etc/apache2/http.keytab KrbMethodNegotiate on KrbMethodK5Passwd on Require valid-user. NewUserPlugin The works great with this setup, and creates the user page when they first login by copying a template and filling in their details from LDAP. -- Contributor:, - 05 Dec 2009-12-28 Comments & Questions about this Supplemental Document Topic Thanks Matt for contributing this topic.

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