Network Communication Protection rule page

Rule options

Rule name

Enter a unique name for the rule. This field is required.

Description

Click Edit to open the description text box. The maximum description length is 2000 characters. The character counter

State

Select Enabled or Disabled from the drop-down list. You can also change this parameter on the DLP Rule Set page by selecting a rule or rules and selecting Actions → Change State. The default is Disabled.

Severity

A relative measure of the gravity of violating this rule. The default is Warning. The color code that also appears in the DLP Incident Manager is displayed next to the field.

Enforce on

Selects the Trellix DLP product enforcing the rule. This rule type is only supported on Trellix DLP Endpoint for Windows

Condition tab / Exceptions tab

Classification

Note

Network communication protection rules do not check content classification criteria. Use content fingerprinting criteria when defining classifications used with Network communication protection rules.

Use the is any data (ALL) option to bypass applying a content classification, or use the is one of (OR) or is all of (AND) options to select predefined classifications. You can use the + icon to add multiple classifications, and define their relationship with the and/or option.

Using classification grouping — When you include multiple classifications in a rule, you can group classifications and create a custom expression to optimize a condition using the Boolean AND or OR operations. When more than two rows of conditions are included, a toggle button appears. Click the toggle button to enable custom classification grouping and type the custom classification grouping expression. For example, if classifications 1, 2, and 3 are included in a Classification condition, you can build an expression similar to ((1 AND 2) OR (1 AND 3)).

The expressions are simplified using the Boolean logic. The brackets are added automatically to the expression if not included. If an expression has both AND and OR, the classification item numbers with AND logic are grouped first and then the classification item numbers with OR logic are grouped. The AND operation takes precedence over the OR operation and the expression is computed from left to right. A classification grouping expression must include all classification item numbers.

End-User

Select a user group from the drop-down list. Using the + icon, you can select multiple groups using AND/OR logic. You can exclude groups using the Exceptions tab. Include at least one group before excluding any groups.

Network direction

Select checkboxes for incoming, outgoing, or both.

Network addresses

Required field. Select a network IP address definition, or click New Item to create one.

Network ports

Use default any port, or select a port definition.

Application creating the connection

Use default any application or select an application definition.

Exceptions

Note

The Exceptions tab is optional.

Actions

Adds or deletes a rule exception.

Name

Enter a unique name for the exception. This field is required.

Description

Optional descriptive text.

State

Select Enabled or Disabled from the drop-down list. The exception state is independent from the rule state.

End-User

Select a user group from the drop-down list. See above for option details. The exception end-user is independent from the rule end-user.

Network direction

Select a network direction. The exception network direction is independent from the rule network direction.

Network addresses

Select a network IP address definition. The exception network address is independent from the rule network address.

Network ports

Select a network port definition. The exception network port is independent from the rule network port.

Application creating the connection

Select an application definition. The exception application is independent from the rule application.

Reaction tab

Trellix DLP Endpoint

Data protection and device protection rules have a granular Action definition. You can define different actions for the following:

Action

Select an action from the drop-down list. The default is No Action.

Note

Selecting No Action with Report Incident is sometimes referred to as Monitor.

For a list of prevent actions for different types of rules, see the available reactions table.

User Notification

User notification definitions are stored in the DLP Policy in the Policy Catalog. Select a predefined definition, or click New Item to create one.

Report Incident

Select the checkbox for the rule to trigger a DLP incident.