Designing Access Controls
Choose Endpoint Integrity Testing Methods
Sophisticated users, on the other hand, are so comfortable changing settings that you may have to take measures to prevent them from trying to avoid the testing process. With the ActiveX testing method, for example, users could close their Web browser to bypass the
Table 3-48. Testing Method by User Sophistication
| Agentless | ActiveX | NAC EI Agent |
User sophistication | • Low (domain members) | Low to medium | Low to medium |
| • Medium |
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| members) |
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User interaction | May need to enable print and | Support for ActiveX and | Download and install agent |
| file sharing | JavaScript on the Web | one time |
| May need to supply network | browser |
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| administrator with admin | Keep Internet Explorer open |
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| credentials |
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User evasion | None | Change settings before pre- | None |
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| connect testing, then change |
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| them back after |
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| testing is completed |
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| Close browser to avoid post- |
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| connect testing |
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Example. The PCU students are computer literate. In fact, many are expert users. Although some of the university administrators and faculty are less knowledgeable about computers, all of them are using computer programs to do their jobs and are comfortable completing basic tasks. Based solely on user sophistication, the PCU network administrators decide to set up support for the testing methods outlined in Table
Table 3-49. Testing Methods for User Sophistication
Factor | Public Wired | Private Wired | Public Wireless | Private | Remote |
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| Wireless |
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User sophistication | NAC EI agent | NAC EI agent | NAC EI agent | NAC EI agent | NAC EI agent |
| ActiveX | Agentless | ActiveX | Agentless | Agentless |
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| ActiveX |
| ActiveX | ActiveX |
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