A sequence rule is comprised of 2 or more subrules that must have been triggered in a specific order within the defined timeframe. Sequence rules have an optional group by field, which may be any populated field from the events.
NOTE: When a subrule is used to create a sequence rule, a copy of the subrule is added to the sequence rule's definition. Because a copy is added, changes to the original subrule do not affect the sequence rule.
To create a sequence rule:
Open the Correlation Rules window and select a folder from the Folder drop-down list to which this rule will be added.
Click the Add button located on the top left corner of the screen. The Correlation Rule window will display. Select Sequence Rule.
In Sequence rule window, you may select a sub-rule to create a sequence rule. To select a sub-rule, click Add Rule button. Add Rule window will display.
Select a rule and click OK.
Set parameters for the rule to fire. To group event tags according to the attributes, Click Add/Edit. The Attribute Window will open.
Check the attribute as per your requirement. You may preview the rule in RuleLg preview box. Click Next, the Update Criteria window will display.
Update criteria for the rule to fire and click Next.
Enter a name to this rule. You have an option to modify the rule folder.
Enter rule description and click Next.
You have an option to create another rule from this wizard. Select your option and click Next.