Using client side certificates vs. server side certificate only

I understand that only a server side certificate is needed to establish a secure connection, but what is the advantage of using a client side certificate as well?

Date Entered: 10/8/2001    Last Updated: 06/09/2004

Using a client side certificate verifies the identity of the client to the server. Client certificates are a mechanism to provide added trust in situations where added security is important to the server.

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