You can configure your Web site to grant or deny specific computers, groups of computers, or domains access to Web sites, directories, or files.
Credentials: Membership in the Administrators group on the local computer.
As a security best practice, log on to your computer using an account that is not in the Administrators group, and then use the Run as command to run IIS Manager as an administrator. At the command prompt, type runas /user:administrative_accountname "mmc %systemroot%\system32\inetsrv\iis.msc".
Configure Restrictions Based on IP Address
You can use IIS Manager to grant or deny access to Web sites or applications for a computer or group of computers. ...