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Asymmetric tokens and Mixed-Mode Security

When you are using a X.509 Certificate as the client authentication token in Mixed-Mode Security - apart from signing the Timestamp WCF will sign the 'To' header as well. This is to prevent a client spoofing attack by a rougue service. Consider the situation

WCF Security Modes

WCF supports three types of Security. They are, Transport Security Mixed-Mode Security Message Security Let's discuss the various Security Modes below. Transport Security is applied at the transport byte stream below the message layer. The message does
 
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