Interop.Windows.NtDll.ImpersonationLevel
enum ImpersonationLevel
Values that specify security impersonation levels. Security impersonation levels govern
the degree to which a server process can act on behalf of a client process.
The server process cannot obtain identification information about the client, and
it cannot impersonate the client. It is defined with no value given, and this, by
ANSI C rules, defaults to a value of zero.
The server process can impersonate the client's security context on remote systems.
The server process can obtain information about the client, such as security
identifiers and privileges, but it cannot impersonate the client. This is useful
for servers that export their own objects, for example, database products that
export tables and views. Using the retrieved client-security information, the
server can make access-validation decision without being able to use other
services that are using the client's security context.
The server process can impersonate the client's security context on its local
system. The server cannot impersonate the client on remote systems.