An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
An authentication framework is described that provides a secure means for clients to access remote computing resources via the Web. Clients authenticate themselves to a proxy Web server using a secure protocol and a digital certificate. The server