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-rw-r--r--source3/winbindd/winbindd_pam.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/source3/winbindd/winbindd_pam.c b/source3/winbindd/winbindd_pam.c
index bc27f3db20..2de10a9f10 100644
--- a/source3/winbindd/winbindd_pam.c
+++ b/source3/winbindd/winbindd_pam.c
@@ -1307,6 +1307,27 @@ NTSTATUS winbindd_dual_pam_auth_samlogon(struct winbindd_domain *domain,
goto done;
}
+ /* It is really important to try SamLogonEx here,
+ * because in a clustered environment, we want to use
+ * one machine account from multiple physical
+ * computers.
+ *
+ * With a normal SamLogon call, we must keep the
+ * credentials chain updated and intact between all
+ * users of the machine account (which would imply
+ * cross-node communication for every NTLM logon).
+ *
+ * (The credentials chain is not per NETLOGON pipe
+ * connection, but globally on the server/client pair
+ * by machine name).
+ *
+ * When using SamLogonEx, the credentials are not
+ * supplied, but the session key is implied by the
+ * wrapping SamLogon context.
+ *
+ * -- abartlet 21 April 2008
+ */
+
logon_fn = contact_domain->can_do_samlogon_ex
? rpccli_netlogon_sam_network_logon_ex
: rpccli_netlogon_sam_network_logon;