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If you need to provide a certificate to the server, you can define it here. By default one is not provided. Provides a private key to use. Specifies the verify depth to use that indicates the depth to which OpenSSL will check the certificate chain. Performs five reconnects using the same session ID to ensure session caching is working. Displays the entire certificate chain not just the server certificate. Prints the SSL session states. Provides extra debugging information including a hex dump of all the SSL traffic. Shows all the protocol messages if you are performing the debug hex dump. Enables and disables the available SSL and TLS protocols.

The last option is extremely useful when diagnosing issues Some older versions of SSL implemented with applications will not function when connected to with newer versions of the SSL/TLS protocols For example, some servers require TLS to be disabled Alternatively, others servers require that you connect to a remote server that allows only one type of SSL protocol The openssl s_server function allows you to set up a functioning SSL server that you can connect to and test certificates and keys Listing 3-11 shows how to start a test SSL server Listing 3-11 Starting a Test SSL Server Using the openssl s_server Function puppy$ openssl s_server -key puppyyourdomaincomkeypem \ -cert puppyyourdomaincomcert.

pem Using default temp DH parameters Enter PEM pass phrase: ACCEPT The command in Listing 3-11 will start a server and bind it onto port 4433 and await input from a remote application The choice of port 4433 is the default, and you can override that by specifying the -accept option and telling s_server to bind to another port As you can see from Listing 3-11, I have specified a key and certificate for the function to use If you specify a certificate or key that has a passphrase, you will be prompted to enter the required password You can also define the location of the CA certificate file and a path to the CA files using the -CAfile option and the -CApath option, respectively You can also emulate a typical SSL Web server To emulate a simple Web server, specify the -WWW option on the command line.

Any HTML files requested will be sourced relative to the directory from which the openssl s_client function was started; in other words, a request for indexhtml will assume the file is located at /indexhtml You can also add the -www option to the command line to have the openssl command send back detailed status and response information in the form of a HTML document to the requesting Web server While in the session, if it was not been initiated with the -www or -WWW option, you can send commands to the client from within the server session Table 3-3 details the commands available to you Table 3-3 SSL Commands Within an openssl s_server Session.

"Is .NET RIA Services going to be preferred over ADO.NET DataServices for Silverlight Data Access No. The bits that are being released today for RIA Services actually build on top of ADO.NET DataServices. So you can think of ADO.NET DataServices as providing a kind of lower layer RAW/REST API, and then RIA Services as a layer on top. We definitely think that there are scenarios where you would want to have a pure REST service model. And then the .NET RIA Services gives you things like the validation, cross-tiering, and higher-level services on top. We ve worked hard to layer them nicely, so that RIA Services isn t a competitive technology, but actually just builds on top of ADO.NET DataServices."

Sends some plain text to the client. This should disconnect the client by causing a protocol violation. Ends the current SSL connection but still accepts new connections. Ends the current SSL connection and ends the server. Renegotiates the current SSL session. Renegotiates the current SSL session and requests a client certificate from the client. Prints the session cache status information.

to function like tcpdump except it focuses on SSL/TLS traffic. This is a good tool for diagnosing connection with SSL/TLS. If provided with keys and passwords, it can also decrypt the monitored traffic.