Alexander Bokovoy
44a255d423
Implement minimal server referrals support for enterprise principals as defined in RFC 6806. Use krb5_pac_verify_ext() and krb5_pac_sign_ext() to support cross-realm S4U extensions. We have to verify/sign PAC and take the realm into account for S4U in these cases. The use of extended functions require krb5 1.17+. For PAC verification, we have to filter existing PAC CLIENT-INFO structure in cross-realm S4U case because otherwise old CLIENT-INFO would change the PAC principal due to adding or ommiting the realm in transition. Since a new PAC CLIENT-INFO will be provided by k5_insert_client_info() anyway, we can filter it in all cases. Generate PAC only for the first S4U2Self request to the client realm (client != NULL). Otherwise, use the PAC from the cross-realm ticket. The latter PAC belongs to the impersonated user. Foreign (inner) principal look up in non-AS request returns KRB5_KDB_NOENTRY. Finally, in PAC signing we have to take the realm into account as well for S4U2Self cross-realm operation. This does not work when compiling against krb5 1.17 at the moment because sign_authdata() callback does not know whether we are dealing with an issuing referral or not. In 1.18 a KDC will set a special client flag to signify this when asking KDB driver to sign a PAC record. Fixes: https://pagure.io/freeipa/issue/8319 Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com> Signed-off-by: Isaac Boukris <iboukris@redhat.com> Reviewed-By: Isaac Boukris <iboukris@redhat.com> Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
FreeIPA Server
FreeIPA allows Linux administrators to centrally manage identity, authentication and access control aspects of Linux and UNIX systems by providing simple to install and use command line and web based management tools.
FreeIPA is built on top of well known Open Source components and standard protocols with a very strong focus on ease of management and automation of installation and configuration tasks.
FreeIPA can seamlessly integrate into an Active Directory environment via cross-realm Kerberos trust or user synchronization.
Benefits
FreeIPA:
- Allows all your users to access all the machines with the same credentials and security settings
- Allows users to access personal files transparently from any machine in an authenticated and secure way
- Uses an advanced grouping mechanism to restrict network access to services and files only to specific users
- Allows central management of security mechanisms like passwords, SSH Public Keys, SUDO rules, Keytabs, Access Control Rules
- Enables delegation of selected administrative tasks to other power users
- Integrates into Active Directory environments
Components
The FreeIPA project provides unified installation and management tools for the following components:
- LDAP Server - based on the 389 project
- KDC - based on MIT Kerberos implementation
- PKI based on Dogtag project
- Samba libraries for Active Directory integration
- DNS Server based on BIND and the Bind-DynDB-LDAP plugin
Project Website
Releases, announcements and other information can be found on the IPA server project page at http://www.freeipa.org/ .
Documentation
The most up-to-date documentation can be found at http://freeipa.org/page/Documentation .
Quick Start
To get started quickly, start here: http://www.freeipa.org/page/Quick_Start_Guide
For developers
- Building FreeIPA from source
- http://www.freeipa.org/page/Build
- See the BUILD.txt file in the source root directory
Licensing
Please see the file called COPYING.
Contacts
- If you want to be informed about new code releases, bug fixes, security fixes, general news and information about the IPA server subscribe to the freeipa-announce mailing list at https://www.redhat.com/mailman/listinfo/freeipa-interest/ .
- If you have a bug report please submit it at: https://pagure.io/freeipa/issues
- If you want to participate in actively developing IPA please subscribe to the freeipa-devel mailing list at https://lists.fedoraproject.org/archives/list/freeipa-devel@lists.fedorahosted.org/ or join us in IRC at irc://irc.freenode.net/freeipa