feat(kube): add NetworkPolicy to restrict runner egress#7753
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Restricts arc-runners namespace egress to DNS (53), HTTPS (443), HTTP (80), and SSH (22). Blocks runners from directly accessing internal cluster services on non-standard ports like PostgreSQL, Redis, and RCON.
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Dependency Review✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.Scanned FilesNone |
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Summary
arc-runnersnamespaceWhy
Self-hosted runners currently have unrestricted network access within the cluster. A compromised workflow could reach internal databases, game servers, or other sensitive services. This policy limits egress to only the ports needed for CI/CD operations.
Risk
Low — purely additive. Only restricts ports that runners shouldn't need. All CI operations (GitHub API, container pulls, package installs, git clone) use standard ports that remain open.
Test plan
arc-runnersnamespacearc-runner-set— should complete normally🤖 Generated with Claude Code