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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| -
| Header File
| winnt.h
| Unicode
| No
| Platform Notes
| None
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SECURITY_IMPERSONATION_LEVEL
The SECURITY_IMPERSONATION_LEVEL enumeration type contains 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.
typedef enum _SECURITY_IMPERSONATION_LEVEL { // sil
SecurityAnonymous,
SecurityIdentification,
SecurityImpersonation,
SecurityDelegation
} SECURITY_IMPERSONATION_LEVEL;
Value
| Meaning
| SecurityAnonymous
| The server process cannot obtain identification information about the client
and it cannot impersonate the client. It is defined with no value given, and
thus, by ANSI C rules, defaults to a value of 0.
| SecurityIdentification
| 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
decisions without being able to utilize other services using the client's security
context.
| SecurityImpersonation
| The server process can impersonate the client's security context on its local
system. The server cannot impersonate the client on remote systems.
| SecurityDelegation
| Windows NT security does not support this impersonation level.
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Remarks
Impersonation is the ability of a process to take on the security attributes
of another process.
See Also
CreatePrivateObjectSecurity, DuplicateToken, DuplicateTokenEx, GetTokenInformation, ImpersonateSelf, OpenThreadToken
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