The defines whether
ldap traffic will be signed or signed and encrypted (sealed).
Possible values are plain, sign
and seal.
The values sign and seal are
only available if Samba has been compiled against a modern
OpenLDAP version (2.3.x or higher).
This option is needed in the case of Domain Controllers enforcing
the usage of signed LDAP connections (e.g. Windows 2000 SP3 or higher).
LDAP sign and seal can be controlled with the registry key
"HKLM\System\CurrentControlSet\Services\ NTDS\Parameters\LDAPServerIntegrity"
on the Windows server side.
Depending on the used KRB5 library (MIT and older Heimdal versions)
it is possible that the message "integrity only" is not supported.
In this case, sign is just an alias for
seal.
The default value is plain which is not irritable
to KRB5 clock skew errors. That implies synchronizing the time
with the KDC in the case of using sign or
seal.
plain