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Because the KDC does not limit protocol transition (S4U2Self), two new
well-known SIDs are available to give this control to the resource
administrator. These SIDs identify whether protocol transition (S4U2Self) has
occurred, and can be used with standard access control lists to grant or limit
access as needed.
See
https://docs.microsoft.com/en-us/windows-server/security/kerberos/kerberos-constrained-delegation-overview
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Apr 13 13:54:27 UTC 2022 on sn-devel-184
The resulting user_info_dc is kept in the 'samba_kdc_entry' structure,
so it can be reused between calls.
This allows us to simplify samba_kdc_get_pac_blobs(), as it no longer
need to return a user_info_dc structure.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
NOTE: THIS COMMIT WON'T COMPILE/WORK ON ITS OWN!
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This will be allocated by the KDC in MIT KRB5 1.20 and newer.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This will be used for SID expanding and filtering.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13300
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This subsystem should be used to provide shared code between the s4 heimdal kdc
and the s4 heimdal wdc plugin.
Guenther
Signed-off-by: Günther Deschner <gd@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>
Here we can fetch the right key, and check if the PAC is likely to be signed by a key that
we know. We cannot check the KDC signature on incoming trusts.
Andrew Bartlett
It is much easier to do decryption with wireshark when the keytab is
available for every host in the domain. Running 'net export keytab
<keytab name>' will export the current (as pointed to by the supplied
smb.conf) local Samba4 doamin.
(This uses Heimdal's 'hdb' keytab and then the existing hdb-samba4,
and so has a good chance of keeping working in the long term).
Andrew Bartlett
