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Android BYOD Security based on Trusted Network Connect » History » Version 11

Andreas Steffen, 22.02.2013 15:52

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h1. Android BYOD Security based on Trusted Network Connect
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An experimental "BYOD version":http://www.strongswan.org/byod/strongswan-byod-1.2.0.apk of the popular "strongSwan Android VPN Client":https://play.google.com/store/apps/details?id=org.strongswan.android allows the collection of integrity measurements on Android 4.x devices. A special Android BYOD IMC written in Java communicates via the TNC IF-M 1.0 Measurement protocol with an Operating System IMV and a Port Scanner IMV. The strongSwan Android VPN Client transports the IF-M messages in IF-TNCCS 2.0 Client/Server protocol batches via the IF-T for Tunneled EAP Methods 1.1 Transport protocol protected by IKEv2 EAP-TTLS.
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h2. VPN Client Configuration
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!strongswan-config_small.png!:http://www.strongswan.org/byod/strongswan-config.png
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The Android VPN client profile *BYOD* specifies the VPN gateway *byod.strongswan.org*, the user authentication is based on *IKEv2 EAP-MD5*, possible user names are *john* or *jane* and the user password is *byod-test*. The *byod.strongswan.org* server certificate is issued by the *strongSwan 2009* certification authority. Therefore the "strongSwan 2009 CA certificate":http://www.strongswan.org/byod/strongswan-cert.crt must be imported into the Android certificate trust store before the first connection can be attempted.
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h2. Unrestricted Access (TNC recommendation is allow)
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!connected.png!:http://www.strongswan.org/byod/screenshot-01-connected.png
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h2. Restricted Access (TNC recommendation is isolate)
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* "Non-Market-Apps Security Setting":http://www.strongswan.org/byod/screenshot-09-non-market-apps-setting.png
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* "Install Web Server App":http://www.strongswan.org/byod/screenshot-10-kws-webserver.png
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* "Restricted connection":http://www.strongswan.org/byod/screenshot-02-restricted.png
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* "Remediation instructions":http://www.strongswan.org/byod/screenshot-03-restricted-remediation.png
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* "Detailed remediation instructions":http://www.strongswan.org/byod/screenshot-04-restricted-remediation-details.png
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h2. Blocked Access (TNC recommendation is block)
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* "Start Android Web Server":http://www.strongswan.org/byod/screenshot-08-webserver-active.png
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* "Failed connection":http://www.strongswan.org/byod/screenshot-05-failure.png
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* "Remediation instructions":http://www.strongswan.org/byod/screenshot-06-failure-remediation.png
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* "Detailed remediation instructions":http://www.strongswan.org/byod/screenshot-07-failure-remediation-details.png