Daily Firewall Report2026-08-20

[github-actions[bot]]

🔥 Executive Summary

Report date: 2026-08-20 · Period: Last 24 hours

285 workflow runs with firewall data were analyzed across the fleet (293 run summaries scanned; 457 skipped as they had no firewall_analysis data or were malformed/missing). Overall firewall activity was light: the vast majority of network traffic (98%) was allowed, and only 9 of the 285 runs (~3%) recorded any blocked requests. Blocking was concentrated in a small number of workflows — most notably Code Scanning Fixer, which accounted for the largest single block volume (proxy.golang.org), and Daily Model Inventory Checker / Slide Deck Maintainer, both of which blocked a cluster of Google-service domains likely related to headless browser automation (autofill, account sync, client APIs). No suspicious or clearly malicious domains were observed in this period.

⚠️ Chart generation failed: the firewall-chart-generator background agent did not return usable output (no CHART1_URL/CHART2_URL and no error payload after repeated prompts). Trend charts are omitted from this report.

📊 Key Metrics

Metric	Value
Total network requests monitored	17,483
✅ Allowed	17,121
🚫 Blocked	362
Block rate	2.07%
Total unique blocked domains	10

🚫 Top Blocked Domains

Domain	Times Blocked	Workflows	Category
proxy.golang.org:443	269	Code Scanning Fixer	Development Services (Go module proxy)
www.google.com:443	26	Daily Model Inventory Checker, Slide Deck Maintainer	Other (Google web)
content-autofill.googleapis.com:443	17	Daily Model Inventory Checker	Other (Google API)
accounts.google.com:443	16	Daily Model Inventory Checker, Slide Deck Maintainer	Other (Google auth)
android.clients.google.com:443	10	Daily Model Inventory Checker, Slide Deck Maintainer	Other (Google client)
www.gstatic.com:443	7	Daily Model Inventory Checker, Slide Deck Maintainer	CDN
storage.googleapis.com:443	6	Blog Auditor, Delight	CDN / Development Services
registry.npmjs.org:443	6	Cache directory setup, Daily Reliability Review	Development Services (npm registry)
clients2.google.com	3	Daily Model Inventory Checker, Slide Deck Maintainer	Other (Google client)
collector.githubapp.com:443	2	Daily Model Inventory Checker	Analytics/Tracking

No policy rule attribution data (policy_analysis) was present in any of the analyzed run summaries for this period, so the Policy Rule Attribution section is omitted.

View Detailed Request Patterns by Workflow

Workflow: Code Scanning Fixer (3 runs analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
proxy.golang.org:443	269	0	100%	Development Services

• Total blocked requests: 269
• Total unique blocked domains: 1
• Most frequently blocked domain: proxy.golang.org:443
• Run: 32256631920 (2026-08-19T13:10:45Z) — 132 blocks
• Run: 32290846642 (2026-08-19T19:03:07Z) — 134 blocks
• Run: 32320570045 (2026-08-20T01:19:04Z) — 3 blocks

Workflow: Daily Model Inventory Checker (1 run analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
content-autofill.googleapis.com:443	17	0	100%	Other
www.google.com:443	16	0	100%	Other
accounts.google.com:443	10	0	100%	Other
android.clients.google.com:443	6	0	100%	Other
www.gstatic.com:443	4	0	100%	CDN
clients2.google.com	2	0	100%	Other
collector.githubapp.com:443	2	0	100%	Analytics/Tracking

• Total blocked requests: 57
• Total unique blocked domains: 7
• Most frequently blocked domain: content-autofill.googleapis.com:443
• Run: 32315362240 (2026-08-19T23:56:57Z)

Workflow: Slide Deck Maintainer (1 run analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
www.google.com:443	10	0	100%	Other
accounts.google.com:443	6	0	100%	Other
android.clients.google.com:443	4	0	100%	Other
www.gstatic.com:443	3	0	100%	CDN
clients2.google.com	1	0	100%	Other

• Total blocked requests: 24
• Total unique blocked domains: 5
• Most frequently blocked domain: www.google.com:443
• Run: 32274781691 (2026-08-19T16:14:30Z)

Workflow: Blog Auditor (1 run analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
storage.googleapis.com:443	5	0	100%	CDN

• Total blocked requests: 5
• Total unique blocked domains: 1
• Run: 32248266707 (2026-08-19T11:34:44Z)

Workflow: Cache directory setup (1 run analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
registry.npmjs.org:443	3	0	100%	Development Services

• Total blocked requests: 3
• Total unique blocked domains: 1
• Run: 32313830115 (2026-08-19T23:34:35Z)

Workflow: Daily Reliability Review (1 run analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
registry.npmjs.org:443	3	0	100%	Development Services

• Total blocked requests: 3
• Total unique blocked domains: 1
• Run: 32311107631 (2026-08-19T22:56:44Z)

Workflow: Delight (1 run analyzed)

Domain	Blocked Count	Allowed Count	Block Rate	Category
storage.googleapis.com:443	1	0	100%	CDN

• Total blocked requests: 1
• Total unique blocked domains: 1
• Run: 32266688432 (2026-08-19T14:53:07Z)

View Complete Blocked Domains List

Domain	Total Blocks	First Seen	Workflows
accounts.google.com:443	16	2026-08-19T16:14:30Z	Daily Model Inventory Checker, Slide Deck Maintainer
android.clients.google.com:443	10	2026-08-19T16:14:30Z	Daily Model Inventory Checker, Slide Deck Maintainer
clients2.google.com	3	2026-08-19T16:14:30Z	Daily Model Inventory Checker, Slide Deck Maintainer
collector.githubapp.com:443	2	2026-08-19T23:56:57Z	Daily Model Inventory Checker
content-autofill.googleapis.com:443	17	2026-08-19T23:56:57Z	Daily Model Inventory Checker
proxy.golang.org:443	269	2026-08-19T13:10:45Z	Code Scanning Fixer
registry.npmjs.org:443	6	2026-08-19T22:56:44Z	Cache directory setup, Daily Reliability Review
storage.googleapis.com:443	6	2026-08-19T11:34:44Z	Blog Auditor, Delight
www.google.com:443	26	2026-08-19T16:14:30Z	Daily Model Inventory Checker, Slide Deck Maintainer
www.gstatic.com:443	7	2026-08-19T16:14:30Z	Daily Model Inventory Checker, Slide Deck Maintainer

🔒 Security Recommendations

• Allowlist proxy.golang.org:443 for Code Scanning Fixer: This is the Go module proxy, a legitimate development dependency needed when the workflow analyzes or builds Go code. It accounted for 269 of 362 blocks (74%) this period and appeared in all 3 runs of this workflow — a strong, consistent, low-risk candidate for allowlisting.
• Allowlist registry.npmjs.org:443 for workflows that install npm dependencies (Cache directory setup, Daily Reliability Review) — legitimate package registry traffic.
• Investigate the Google-domain cluster (www.google.com, accounts.google.com, android.clients.google.com, content-autofill.googleapis.com, www.gstatic.com, clients2.google.com) blocked by Daily Model Inventory Checker and Slide Deck Maintainer. These are consistent with a headless Chrome/Chromium browser attempting Google account sync, autofill, and telemetry — likely triggered by Playwright/Puppeteer browser automation rather than the workflow's intended task. Recommend reviewing whether these workflows need real browser sessions signed into Google services; if not, this traffic is expected/benign background noise from the browser engine and does not need allowlisting. If real Google integration is required, allowlist only the specific domains needed rather than the full cluster.
• storage.googleapis.com:443 (Blog Auditor, Delight) is a legitimate Google Cloud Storage CDN endpoint — likely low risk, but confirm what asset is being fetched before allowlisting broadly.
• collector.githubapp.com:443 — GitHub's own telemetry/analytics collector; low risk, safe to allowlist for Daily Model Inventory Checker if this endpoint is required for the tool's normal operation.
• No suspicious, unknown, or clearly malicious domains were observed in this reporting period.
• Since no policy_analysis/rule-hit data was present in this period's summaries, we cannot identify zero-hit or unused policy rules. Recommend verifying that policy rule attribution logging is enabled for firewall-enabled workflows so future reports can include rule-level effectiveness analysis.

Generated by 🔒 Daily Firewall Logs Collector and Reporter · auto · 43.5 AIC · ⌖ 10.2 AIC · ⊞ 10.3K · ◷

• expires on Sep 2, 2026, 6:47 PM UTC-08:00