Lessons
SSH · Expert
Software / SSH · expert. Ten practical lessons. Open book. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
Pass all ten lessons for the certificate. Sample · Claim
Lesson 1 · On the house
CA-signed host and user keys
Operate an SSH certificate authority.
Lesson 2
Hardware keys
Keys that never leave the token.
Lesson 3
sshd hardening
Reduce attack surface on the daemon.
Lesson 4
Bastion patterns
One door into the estate.
Lesson 5
Session recording concept
Audit interactive admin work.
Lesson 6
Post-quantum KEX concept
Prepare key exchange for PQ threats.
Lesson 7
Multiplexing pitfalls
When ControlMaster bites.
Lesson 8
Reverse tunnels in production
Operate -R safely at scale.
Lesson 9
Audit logs
Prove who did what.
Lesson 10
Zero-trust vs SSH
Place SSH in a modern access model.
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Certificate
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