All four IIS types use an XML format to store their section of the metabase. The present XML format does not support metabase properties of type NTACL (such as AdminACL); if any are encountered while reading/writing to the metabase, they are ignored. Also, properties of type IPSec (such as IPSecurity) are written out as serialized objects, and as a result they are not human-readable (during either direct examination, or as difference results).