- Web Application Firewall
- Container Network Policy
- Container Network Policy management
The Threat Monitoring page provides metrics and policy management for the GitLab application runtime security features. You can access these by navigating to your project’s Security & Compliance > Threat Monitoring page.
GitLab supports statistics for the following security features:
The Web Application Firewall section provides metrics for the NGINX Ingress controller and ModSecurity firewall. This section has the following prerequisites:
- Project has to have at least one environment.
- Web Application Firewall has to be enabled.
- Elastic Stack has to be installed.
If you are using custom Helm values for the Elastic Stack you have to configure Filebeat similarly to the vendored values.
The Web Application Firewall section displays the following information about your Ingress traffic:
- The total amount of requests to your application
- The proportion of traffic that is considered anomalous according to the configured rules
- The request breakdown graph for the selected time interval
If a significant percentage of traffic is anomalous, you should investigate it for potential threats by examining the Web Application Firewall logs.
The Container Network Policy section provides packet flow metrics for your application’s Kubernetes namespace. This section has the following prerequisites:
- Your project contains at least one environment
- You’ve installed Cilium
- You’ve configured the Prometheus service
If you’re using custom Helm values for Cilium, you must enable Hubble with flow metrics for each namespace by adding the following lines to your Cilium values:
global: hubble: enabled: true metrics: enabled: - 'flow:sourceContext=namespace;destinationContext=namespace'
The Container Network Policy section displays the following information about your packet flow:
- The total amount of the inbound and outbound packets
- The proportion of packets dropped according to the configured policies
- The per-second average rate of the forwarded and dropped packets accumulated over time window for the requested time interval
If a significant percentage of packets is dropped, you should investigate it for potential threats by examining the Cilium logs.
The Threat Monitoring page’s Policy tab displays deployed
network policies for all available environments. You can check a
yaml manifest, toggle the policy’s enforcement
status, and create and edit deployed policies. This section has the
Network policies are fetched directly from the selected environment’s deployment platform. Changes performed outside of this tab are reflected upon refresh. Enforcement status changes are deployed directly to a deployment namespace of the selected environment.
By default, the network policy list contains predefined policies in a disabled state. Once enabled,a predefined policy deploys to the selected environment’s deployment platform and you can manage it like the regular policies.
Note that if you’re using Auto DevOps
and change a policy in this section, your
auto-deploy-values.yaml file doesn’t update. Auto DevOps
users must make changes by following the
Container Network Policy documentation.
To change a network policy’s enforcement status:
- Click the network policy you want to update.
- Click the Enforcement status toggle to update the selected policy.
- Click the Apply changes button to deploy network policy changes.
Disabled network policies have the
network-policy.gitlab.com/disabled_by: gitlab selector inside
podSelector block. This narrows the scope of such a policy and as a result it doesn’t affect
any pods. The policy itself is still deployed to the corresponding deployment namespace.
The policy editor allows you to create, edit, and delete policies. To create a new policy click the New policy button located in the Policy tab’s header. To edit an existing policy, clickEdit policy in the selected policy drawer.
The policy editor has two modes:
- The visual Rule mode allows you to construct and preview policy rules using rule blocks and related controls.
- YAML mode allows you to enter a policy definition in
.yamlformat and is aimed at expert users and cases that the Rule mode doesn’t support.
You can use both modes interchangeably and switch between them at any time. If a YAML resource is incorrect, Rule mode is automatically disabled. You must use YAML mode to fix your policy before Rule mode is available again.
Rule mode supports the following rule types:
- Level 4 can be added to all other rules.
Once your policy is complete, save it by pressing the Save policy button at the bottom of the editor. Existing policies can also be removed from the editor interface by clicking the Delete policy button at the bottom of the editor.