These credentials are needed only if Microsoft System Center Configuration Manager 2007 clients need to connect to the Internet via a proxy server or firewall requires authenticated access.
Required Rights and Permissions
This account requires permission to use the proxy server or firewall for Internet access.
Account and Password Creation
Depending on the type of firewall or proxy server, this might be a set of credentials instead of an actual account. The firewall or proxy server administrator might create or designate the credentials to be used.
This account exist anywhere it can access the proxy server or firewall.
The administrator configures the Configuration Manager 2007 client to use the new account or password.
Security Best Practices
Use an account with the least possible permissions.