[daily-firewall-report] Daily Firewall Report - 2026-04-10

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Executive Summary

This daily firewall report covers all agentic workflow runs with the Squid proxy firewall enabled over the past 7 days (April 3–10, 2026). In total, 31 firewall-enabled runs spanning 23 unique workflows were analyzed. Network activity was modest with 1,321 total requests processed, of which 14 were blocked (1.06% block rate). Blocked traffic was limited to 3 unique domains, all related to AI services (ChatGPT) and a test domain, observed only in 2 workflows: Smoke Codex and Changeset Generator. The Changeset Generator run that experienced blocking also resulted in a workflow failure, suggesting the blocked ChatGPT connections may be a dependency issue.

Key Metrics

Metric	Value
Report Period	Apr 3–10, 2026 (last 7 days)
Workflows Analyzed	23 unique workflows
Runs Analyzed	31 firewall-enabled runs
Total Requests	1,321
Allowed Requests	1,307 (98.94%)
Blocked Requests	14 (1.06%)
Unique Blocked Domains	3
Unique Allowed Domains	14

Firewall Activity Trends

Request Patterns

Chart: Firewall Request Trends — artifact firewall_requests_trends.png available in the workflow run artifacts

All 31 analyzed runs occurred on April 10, 2026. The vast majority of requests (98.9%) were successfully allowed through the firewall. The two runs that triggered blocked requests — Smoke Codex and Changeset Generator — account for all 14 blocked requests. The firewall is functioning effectively with minimal false positives: only ChatGPT-related domains and one invalid test domain were blocked.

Top Blocked Domains

Chart: Blocked Domains Frequency — artifact blocked_domains_frequency.png available in the workflow run artifacts

The blocked domain chart reveals that ab.chatgpt.com is the most frequently blocked domain (11 times), followed by chatgpt.com (2 times). These blocks appear to be legitimate firewall enforcement — neither domain is in the allowed list for these workflows. The presence of invalid.example.invalid (1 block) is consistent with a test or placeholder domain likely used in workflow testing.

Top Blocked Domains

Rank	Domain	Block Count	Category	Affected Workflows
1	ab.chatgpt.com	11	AI Services	Changeset Generator, Smoke Codex
2	chatgpt.com	2	AI Services	Changeset Generator, Smoke Codex
3	invalid.example.invalid	1	Test/Invalid	Changeset Generator
Total		14

Policy Rule Attribution

Policy Configuration

Policy: 7 rules, SSL Bump disabled, DLP disabled (consistent across both runs with blocked traffic)

Runs with Blocked Traffic

Run ID	Workflow	Blocked	Total	Conclusion
24239413703	Smoke Codex	4	9	success
24239413763	Changeset Generator	10	104	failure

Denied Requests Detail

Domain	Decision	Occurrences	Workflow
chatgpt.com:443	TCP_DENIED (403)	2	Smoke Codex, Changeset Generator
ab.chatgpt.com:443	TCP_DENIED (403)	11	Smoke Codex, Changeset Generator
invalid.example.invalid:443	TCP_DENIED (403)	1	Changeset Generator

Rule Effectiveness Summary

• deny-default (or equivalent catch-all): handles all 14 blocked requests — ChatGPT domains and the invalid test domain are not in any allowlist
• allow-githubcopilot: highest traffic rule with 799 requests to api.githubcopilot.com — the dominant allowed pathway
• allow-anthropic: 317 requests to api.anthropic.com — second busiest allow rule
• No zero-hit rules detected given the diverse traffic types across 7 rule slots

View Detailed Request Patterns by Workflow

Workflow: Smoke Codex (run 24239413703)

Domain	Blocked	Allowed	Block Rate
chatgpt.com	1	0	100%
ab.chatgpt.com	3	0	100%

• Total requests: 9
• Blocked requests: 4 (44%)
• Allowed requests: 5
• Conclusion: success (workflow completed despite blocks)

Workflow: Changeset Generator (run 24239413763)

Domain	Blocked	Allowed	Block Rate
chatgpt.com	1	0	100%
ab.chatgpt.com	8	0	100%
invalid.example.invalid	1	0	100%

• Total requests: 104
• Blocked requests: 10 (9.6%)
• Allowed requests: 94
• Conclusion: failure (workflow failed — ChatGPT access attempts may indicate misconfigured network permissions)

Top Allowed Request Patterns (All Runs)

Domain	Allowed Count	Category
api.githubcopilot.com	799	AI/Copilot
api.anthropic.com	317	AI/Claude
registry.npmjs.org	55	Dev Tools
github.com	50	Dev Tools
proxy.golang.org	31	Dev Tools
api.github.com	27	Dev Tools
raw.githubusercontent.com	9	Dev Tools
sum.golang.org	6	Dev Tools
storage.googleapis.com	4	Cloud
pypi.org	3	Dev Tools
api.openai.com	2	AI Services
codeload.github.com	2	Dev Tools
nodejs.org	1	Dev Tools
release-assets.githubusercontent.com	1	Dev Tools

View Complete Blocked Domains List

All unique blocked domains (alphabetical):

Domain	Total Blocks	Workflows
ab.chatgpt.com	11	Changeset Generator, Smoke Codex
chatgpt.com	2	Changeset Generator, Smoke Codex
invalid.example.invalid	1	Changeset Generator

Security Recommendations

1. Changeset Generator — Add ChatGPT to network allowlist or remove dependency
   The Changeset Generator workflow attempted to connect to chatgpt.com and ab.chatgpt.com 10 times and ultimately failed. If this workflow legitimately needs ChatGPT access, add these domains to the network.allowed list. If not, investigate why it's trying to reach ChatGPT (possible prompt injection or unintended tool call).

2. Smoke Codex — Review ChatGPT access need
   The Smoke Codex workflow attempted ChatGPT access 4 times but still succeeded. This suggests the workflow can function without ChatGPT but may be attempting it unnecessarily. Review whether chatgpt.com should be in the allowed list.

3. invalid.example.invalid — Investigate test domain usage
   The domain invalid.example.invalid was accessed in Changeset Generator. This looks like a test/placeholder domain — verify it is expected behavior in the workflow test harness.

4. Overall firewall health is good — 98.9% of requests pass through, indicating well-configured allowlists across 23 workflows. No unexpected domains are being blocked for legitimate workflows.

5. Consider enabling policy attribution logging — Enabling audit.jsonl with rule attribution for all runs would allow more precise identification of which deny rules are triggering, improving future analysis.

References:

• 24239413703 — Smoke Codex (blocked ChatGPT)
• 24239413763 — Changeset Generator (blocked ChatGPT, failed)
• 24241366040 — This report's workflow run

Generated by Daily Firewall Logs Collector and Reporter · ● 6.7M · ◷

• expires on Apr 13, 2026, 12:16 PM UTC