r9196: - add a note about the Canonicalize KDCOPtion flag

- add a note about old client using the wrong checksum type for GSSAPI
  in the Authenticator

metze
(This used to be commit 07e39bd94c3ce4d255e6cf6e68dc438bb5c9f9e6)

1 files changed, 15 insertions, 0 deletions

diff --git a/source4/auth/kerberos/kerberos-notes.txt b/source4/auth/kerberos/kerberos-notes.txt
index 24e6ad2403..a9b62742fe 100644
--- a/source4/auth/kerberos/kerberos-notes.txt
+++ b/source4/auth/kerberos/kerberos-notes.txt
@@ -45,6 +45,21 @@ realm to what the client asked for, even just in case differences.
 Heimdal has the same problem, and this applies to the krb5 layer, not
 just gssapi.
 
+We need to test if the canonicalisation is controlled by the KDCOption
+flags, windows always sends the Canonicalize flags
+
+Old Clients (samba3 and HPUX clients) uses 'selfmade' gssapi/krb5
+for using it in the CIFS session setup. Because they use krb5_mk_req()
+they get a chksum field depending on the encryption type, but that's wrong
+for GSSAPI (see rfc 1964 section 1.1.1). The Cheksum type 8003
+should be used in the Authenticator of the AP-REQ! That allows the channel bindings,
+the GCC_C_* req_flags and optional delegation tickets to be passed from the client to the server.
+Hower windows doesn't seems to care about if the checksum is of the wrong type,
+for CIFS SessionSetups, it seems that the req_flags are just set to 0.
+So this can't work for LDAP connections with sign or seal, or for any DCERPC
+connection.
+
+So we need to also support old clients!
 
 Principal Names, long and short names
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