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1.1 misho 1: The roadwarriors <b>carol</b> and <b>dave</b> set up a connection each to gateway <b>moon</b> 2: using EAP-TTLS authentication only with the gateway presenting a server certificate and 3: the clients doing EAP-MD5 password-based authentication. 4: In a next step the EAP-TNC protocol is used within the EAP-TTLS tunnel to determine the 5: state of <b>carol</b>'s and <b>dave</b>'s operating system via the <b>TNCCS 2.0 </b> 6: client-server interface compliant with <b>RFC 5793 PB-TNC</b>. The OS and Attestation IMCs 7: exchange PA-TNC attributes with the OS and Attestation IMVs via the <b>IF-M 1.0</b> measurement 8: protocol defined by <b>RFC 5792 PA-TNC</b>. 9: <p> 10: <b>carol</b> sends information on her operating system consisting of the PA-TNC attributes 11: <em>Product Information</em>, <em>String Version</em>, and <em>Device ID</em> up-front 12: to the Attestation IMV, whereas <b>dave</b> must be prompted by the IMV to do so via an 13: <em>Attribute Request</em> PA-TNC attribute. <b>dave</b> is instructed to do a reference 14: measurement on all files in the <b>/bin</b> directory. <b>carol</b> is then prompted to 15: measure a couple of individual files and the files in the <b>/bin</b> directory as 16: well as to get metadata on the <b>/etc/tnc_confg</b> configuration file. 17: <p> 18: <b>carol</b> passes the health test and <b>dave</b> fails because IP forwarding is 19: enabled. Based on these assessments which are communicated to the IMCs using the 20: <em>Assessment Result</em> PA-TNC attribute, the clients are connected by gateway <b>moon</b> 21: to the "rw-allow" and "rw-isolate" subnets, respectively. 22: </p>