Cisco Cisco Web Security Appliance S380 Guia Do Utilizador

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      Cisco AnyConnect Secure Mobility Solution Guide
Understanding How AnyConnect Secure Mobility Works
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Cisco AnyConnect Secure Mobility Solution Guide
The Web Security appliance tracks the requests it receives and applies policies 
configured for remote users to traffic received from remote users. For information 
on how it identifies remote users, see 
.
Depending on how you configure the Web Security appliance, the AnyConnect 
client may use a VPN connection to an adaptive security appliance to 
communicate directly with the Web Security appliance. For more information, see 
Communication Between the ASA and WSA
Whether the Web Security appliance interacts and communicates with the 
adaptive security appliance depends on how the Web Security appliance is 
configured to identify remote users. The Web Security appliance keeps track of 
the traffic it receives and applies policies configured for remote users to traffic 
received from remote users. It identifies remote users using one of the following 
methods:
  •
Associate by IP address. The Web Security appliance administrator specifies 
a range of IP addresses that it considers as assigned to remote devices. 
Typically, the adaptive security appliance assigns these IP addresses to 
devices that connect using VPN functionality. When the Web Security 
appliance receives a transaction from one of the configured IP addresses, it 
considers the user as a remote user. With this configuration, the Web Security 
appliance does not communicate with any adaptive security appliance.
  •
Integrate with a Cisco ASA. The Web Security appliance administrator 
configures the Web Security appliance to communicate with one or more 
adaptive security appliances. The adaptive security appliance maintains an IP 
address-to-user mapping and communicates that information to the Web 
Security appliance. When the Web Security appliance receives a transaction, 
it obtains the IP address and checks the IP address-to-user mapping to 
determine the user name. When you integrate with an adaptive security 
appliance, you can enable single sign-on for remote users. With this 
configuration, the Web Security appliance communicates with the adaptive 
security appliance.
When the Web Security appliance is configured to integrate with an adaptive 
security appliance, it tries to establish an HTTPS connection with all configured 
adaptive security appliances when it first starts up. Once the connection is