Suppression Rules
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Suppression rules allow you to ignore specific outbound network calls from known domains that are not a security concern.
For example, if your organization regularly makes outbound calls to www.google.com, but these calls are being flagged as anomalous, you can create a suppression rule to prevent unnecessary alerts for this domain.
You can create suppression rules at different levels, depending on how broadly you want to apply them:
Job Level – Applies to a specific job.
Workflow Level – Applies to all jobs within a workflow.
Repository Level – Applies to an entire repository.
Organization Level – Applies across all repositories within the organization.
There are two ways to create a suppression rule, from the:
Suppression Rules page
All Detections page
Step 1: Navigate to Suppression Rules under the Harden Runner Section
Step 2: Click "Create rule"
Step 3: Enter the following details:
Rule Name – Provide a meaningful name for the rule.
Description – Add details about why this rule is being created.
Endpoint to Ignore – Specify the domain or endpoint to suppress (use * for wildcard matching).
Scope – Choose the level of the rule: Job, Workflow, Repository, or Organization.
Step 4: Click "Save"
Your Suppression Rule is now created and active
Step 1: Navigate to All Detections and go to the Anomalous Outbound Network Calls Tab
Step 2: Click on the three dots next to the detection you want to suppress and select "Create Rule"
Step 3: You will be redirected to the Suppression Rules page with the detection details pre-filled, add the name and description.
Step 4: Click "Save"
Your Suppression Rule is now in effect
