SCAN 5-2 Dokumentacja Pobierz pdf (Strona 349)

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Policy Server for Cisco NAC

10-7

The Client Validation Sequence

Client validation refers to the process of evaluating an OfficeScan client’s security

posture and returning instructions for the client to perform if the Policy Server

considers it to be at-risk. The Policy Server validates an OfficeScan client by using

configurable rules and policies.

Below is the sequence of events that occurs when an OfficeScan client attempts to

access the network:

1. The Cisco Network Access Device starts the validation sequence by requesting the

security posture of the client when it attempts to access the network.

2. The Network Access Device then passes the security posture to the ACS server.

3. The ACS server passes the security posture to the Policy Server, which performs

the evaluation.

4. In a separate process, the Policy Server periodically polls the OfficeScan server for

Virus Pattern and Virus Scan Engine version information to keep its data current.

It then uses a policy you configure to perform a comparison of this information

with the client security posture data.

5. Following that, the Policy Server creates a posture token, and passes it back to the

OfficeScan client.

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