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Adjust our SSH algorithm tuning to better fit ssh-audit hardening guides #279

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@jonasbardino jonasbardino commented Jul 4, 2025

Adjusted our SSH algorithm tuning to better fit the ssh-audit hardening recommendations for Rocky 9:
https://www.sshaudit.com/hardening_guides.html#rocky_9
The changes include added modern algos as well as small reordering to balance security and performance.

NOTE: this is a rather untested draft so far and possibly changes default negotiated security parameters. So it should neither be merged before we have verified correctness nor put in production before we have fully evaluated the performance improvements of upgrading paramiko to 3.5.x on our Rocky 9 systems.

recommendations for Rocky 9:
https://www.sshaudit.com/hardening_guides.html#rocky_9
The changes include added modern algos as well as small reordering to balance
security and performance.
@jonasbardino jonasbardino self-assigned this Jul 4, 2025
@jonasbardino jonasbardino added the enhancement New feature or request label Jul 4, 2025
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