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feat: ssh config hardening #101

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feat: ssh config hardening #101

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@kevbarns kevbarns commented Dec 2, 2024

Recommend source from audit : https://www.sshaudit.com/hardening_guides.html#ubuntu_22_04_lts

SSH Keys generation was skip as ed25519 keys are already present on server, is it needed ? cc @moroine @antoinebigard

Re-generate the RSA and ED25519 keys
rm /etc/ssh/ssh_host_*
ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ""
ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ""

Enable the ED25519 and RSA keys
Enable the ED25519 and RSA HostKey directives in the /etc/ssh/sshd_config file:
echo -e "\nHostKey /etc/ssh/ssh_host_ed25519_key\nHostKey /etc/ssh/ssh_host_rsa_key" >> /etc/ssh/sshd_config

@kevbarns kevbarns self-assigned this Dec 2, 2024
@kevbarns kevbarns added the enhancement New feature or request label Dec 2, 2024
@kevbarns kevbarns requested review from moroine, antoinebigard and Pomarom and removed request for moroine December 2, 2024 14:45
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kevbarns commented Dec 4, 2024

A tester en sandbox ⚠️

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@antoinebigard antoinebigard Awaiting requested review from antoinebigard

@moroine moroine Awaiting requested review from moroine

@Pomarom Pomarom Awaiting requested review from Pomarom

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