topic (iac): [secure-hybrid-network] tighten firewall application rules#270
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Replace overly permissive allow-all rule (targetFqdns: '*', sourceAddresses: '*') with a scoped rule allowing only Windows Update FQDNs from the spoke network prefix. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
ckittel
approved these changes
May 28, 2026
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Why
The firewall allows all outbound HTTP/HTTPS to any FQDN from any source — a reference implementation should demonstrate least-privilege.
What
Test
Replaces #266 (closed accidentally).