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james.maesandClaude Opus 5.5 c8a231f5f8 fix(sftp): no connection-log row for connections that never sign in
The row was inserted at TCP accept with a provisional AUTH_FAILED, so the
kubelet's TCP readiness probe on the SFTP port wrote a "failed sign-in"
row every 5 seconds per pod in kof22 prod (about 35k a day). The row is
now written at the first authentication attempt or a pre-auth refusal
(the connection rate limit); probes and port scans leave nothing. The
per-IP connection rate is still counted at accept.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-15 07:15:38 -05:00
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