OfficeScan 10 Administrator's Guide - Online Help Home - Trend Micro

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Trend Micro OfficeScan 10 Service Pack 1 Administrator’s Guide 10-8 6. The client performs the actions configured in the posture token. OfficeScan client Request to connect to network Request security posture Pass security posture (Virus Pattern and Virus Scan Engine version) Return posture token Network Access Device Cisco Secure ACS Pass security posture Return posture token Carry out actions specified in the posture token and retry connection to the network.* The validation sequence repeats. Policy Server for Cisco NAC Pass security posture Return posture token FIGURE 10-23. Network access validation sequence Office Scan server Request current version of Virus Pattern and Virus Scan Engine Return current version of the Virus Pattern and Virus Scan Engine Use security posture to validate client. The Policy Server uses policies to compare client security posture with the most recent versions of the Virus Pattern and Virus Scan Engine. * The client retries to access the network when the Network Access Device timer expires. See the Cisco router documentation for information on configuring the timer.
The Policy Server Policy Server for Cisco NAC The Policy Server is responsible for evaluating the OfficeScan client’s security posture and for creating the posture token. It compares the security posture with the latest versions of the Virus Pattern and Virus Scan Engine received from the OfficeScan server to which the client is a member. It returns the posture token to the Cisco Secure ACS server, which in turn passes it to the client from the Cisco Network Access Device. Installing additional Policy Servers on a single network can improve performance when a large number of clients simultaneously attempt to access the network. These Policy Servers can also act as a backup if a Policy Server becomes inoperable. If there are multiple OfficeScan servers on a network, the Policy Server handles requests for all OfficeScan servers registered to it. Likewise, multiple Policy Servers can handle requests for a single OfficeScan server registered to all the Policy Servers. The following figure illustrates the relationship of multiple OfficeScan servers and Policy Servers. Network Access Device OfficeScan client Cisco Secure ACS Policy servers OfficeScan servers FIGURE 10-24. Multiple Policy Server/OfficeScan server relationship You can also install the Policy Server on the same computer as the OfficeScan server. 10-9
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OfficeScan 10 Administrator's Guide - Online Help Home - Trend Micro

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