Cisco Cisco Web Security Appliance S170 Guia Do Utilizador

All other error types. Most other error types are due to the appliance not being able to complete 
the SSL handshake with the HTTPS server. For more information about additional error scenarios 
for server certificates, see http://www.openssl.org/docs/apps/verify.html.

When a certificate is both expired and has an unrecognized root authority, the Web Security 
appliance performs the action specified for an unrecognized root authority. 

For more information about handling invalid server certificates, see 

.

Submit and commit your changes.

After the Web Proxy assigns an Identity to a client request, it evaluates the request against the other 
policy types to determine which policy group it belongs for each type. When the HTTPS Proxy is 
enabled, it applies HTTPS requests against the Decryption Policies. When the HTTPS Proxy is not 
enabled, it evaluates HTTP requests against the Access Policies.

When an HTTPS request gets decrypted, the Web Proxy evaluates the decrypted request against the 
Access Policies. For more information about how the Web Proxy evaluates Access Policies, see 

The Web Proxy applies the configured policy control settings to a client request based on the client 
request’s policy group membership.

To determine the policy group that a client request matches, the Web Proxy follows a specific process 
for matching the group membership criteria. During this process, it considers the following factors for 
group membership:

Identity. Each client request either matches an Identity, fails authentication and is granted guest 
access, or fails authentication and gets terminated. For more information about evaluating Identity 
group membership, see 

.

Authorized users. If the assigned Identity requires authentication, the user must be in the list of 
authorized users in the Decryption Policy group to match the policy group.

Advanced options. You can configure several advanced options for Decryption Policy group 
membership. Some of the options (such as proxy port, and URL category) can also be defined within 
the Identity. When an advanced option is configured in the Identity, it is not configurable in the 
Decryption Policy group level.

The information in this section gives an overview of how the appliance matches client requests to 
Decryption Policy groups. For more details about exactly how the appliance matches client requests, see 

The Web Proxy sequentially reads through each policy group in the policies table. It compares the client 
request status to the membership criteria of the first policy group. If they match, the Web Proxy applies 
the policy settings of that policy group.

If they do not match, the Web Proxy compares the client request to the next policy group. It continues 
this process until it matches the client request to a user defined policy group. If it does not match a user 
defined policy group, it matches the global policy group. When the Web Proxy matches the client request 
to a policy group or the global policy group, it applies the policy settings of that policy group.