What is the Process Runs behind CTRL+ALT+DEL on Windows server
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Answer Posted / pradipta chakraborty
the process which runs behind CTRL+ALT+DEL is winlogon,
which in response instructs GINA component to collect your
user name and password.
GINA passes the secure information to the Local Security
Authority (LSA) for authentication.
The LSA passes the information to the Security Support
Provider Interface (SSPI). SSPI is an interface that
communicates to both Kerberos and NTLM services and allows
developers to write security aware applications without
knowing Kerberos or NTLM specifics.
SSPI passes the user name and password to Kerberos SSP.
Kerberos SSP checks to see if the target computer name is
the local computer or the domain name. Kerberos passes an
error message to SSPI if it is the local computer name. The
computer generates an internal error not visible to the
user.
The internal error message triggers SSPI to start the
process over again with GINA. GINA passes the information
to LSA again, and then LSA passes the information to SSPI
again.
This time, SSPI passes the user name and password to the
NTLM driver MSV1-0 SSP. The NTLM driver uses the Netlogon
service to validate the user against the local SAM database.
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