what is nt authority\network service account?

I'm setting up WSUS server and in the docs the nt authority\network service account is referenced?  I'm not sure if this is a seperate account or an alias for another.  Don't know where to go from here.
rmckolayAsked:
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shankshankCommented:
It is a separete account.  When you choose your update services properties, and goto the logon account, choose THIS ACCOUNT and put in NT AUTHORITY\NetworkService and the appropriate password.

I have mine set as a domain administrator, i think because we had a problem using the network service account
Mohammed HamadaSenior IT ConsultantCommented:
The NT AUTHORITY/NETWORK SERVICE database user is part of the IIS Worker Process Group. In the SQL Server Login Properties not only click on add "ASPNET" to add this user as a Login for the selected database. You'll also have to give rights to the "NT AUTHORITY/NETWORK SERVICE" user, which was the user that your ASP.NET web application tried to use to access your database ..

Referenced here...
http://www.experts-exchange.com/Programming/Q_21766462.html

Have a look At this threads too..
http://support.instantasp.co.uk/Topic1286-25-1.aspx
http://www.sharepointu.com/forums/m_39732/mpage_1//tm.htm#39741
MereteCommented:

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MereteCommented:
Thank you  rmckolay may it all run smoothly for you.
Cheers Merete
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