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Chapter 12      Data Security and External DLP Policies
Evaluating Data Security and External DLP Policy Group Membership
Evaluating Data Security and External DLP Policy 
Group Membership
Each client request is assigned to an Identity and then is evaluated against the 
other policy types to determine which policy group it belongs for each type. The 
Web Proxy evaluates upload requests against the Data Security and External DLP 
Policies. 
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 Data Security or External DLP 
Policy group to match the policy group. The list of authorized users can be 
any of the specified groups or users or can be guest users if the Identity allows 
guest access.
  •
Advanced options. You can configure several advanced options for Data 
Security and External DLP Policy group membership. Some 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 
Data Security or External DLP Policy group level.
The information in this section gives an overview of how the Web Proxy matches 
upload requests to both Data Security and External DLP Policy groups. For more 
details about exactly how the Web Proxy matches client requests, see 
.
The Web Proxy sequentially reads through each policy group in the policies table. 
It compares the upload 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.