WMS IP Address Authorization, WMS Negotiate Authentication

http://technet.microsoft.com/en-us/library/cc730972.aspx

WMS Negotiate Authentication

The WMS Negotiate Authentication plug-in grants access to the server based upon the user's network logon approval. This plug-in uses an encrypted challenge/response scheme to authenticate users. It is a secure form of authentication because the user name and password

http://technet.microsoft.com/en-us/library/cc770273(WS.10).aspx

WMS IP Address Authorization

Set IP address access permissions
Allow all except those in the Deny list	Select this option to restrict clients from accessing your server based on their IP addresses. If this permission level is set, all clients have access by default.
Deny all except those in the Allow list	Select this option to allow clients to access your server based on their IP addresses. If this permission level is set, all clients do not have