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- The roadwarriors <b>carol</b> and <b>dave</b> set up a connection each to gateway <b>moon</b>
- using EAP-TTLS authentication only with the gateway presenting a server certificate and
- the clients doing EAP-MD5 password-based authentication.
- <p/>
- In a next step the <b>RFC 7171 PT-EAP</b> transport protocol is used within the EAP-TTLS tunnel
- to determine the state of <b>carol</b>'s and <b>dave</b>'s operating system via the <b>IF-TNCCS 2.0</b>
- client-server interface compliant with <b>RFC 5793 PB-TNC</b>. The OS and Attestation IMCs
- exchange PA-TNC attributes with the OS IMV via the <b>IF-M 1.0</b> measurement protocol
- defined by <b>RFC 5792 PA-TNC</b>.
- <p/>
- <b>carol</b> sends information on her operating system consisting of the PA-TNC attributes
- <em>Product Information</em>, <em>String Version</em>, <em>Numeric Version</em>,
- <em>Operational Status</em>, <em>Forwarding Enabled</em>, <em>Factory Default Password Enabled</em>
- and <em>Device ID</em> up-front, whereas <b>dave</b> must be prompted by the IMV to do so via an
- <em>Attribute Request</em> PA-TNC attribute. <b>carol</b> is then prompted to send a list of
- installed packages using the <em>Installed Packages</em> PA-TNC attribute. Since <b>dave</b>
- successfully connected to the VPN gateway shortly before, no new list of installed packages is
- requested again but because IP forwarding is enabled <b>dave</b> receives a corresponding
- <em>Remediation Instructions</em> PA-TNC attribute.
- <p>
- <b>carol</b> passes the health test and <b>dave</b> fails. Based on these assessments
- which are communicated to the IMCs using the <em>Assessment Result</em> PA-TNC attribute,
- the clients are connected by gateway <b>moon</b> to the "rw-allow" and "rw-isolate"
- subnets, respectively.
- </p>
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