Files
gitlab-mirror/roles/sshd/tasks/algorithms.yml
2025-12-18 11:54:32 +03:00

43 lines
1.3 KiB
YAML

---
# next task requires this directory to exist for sshd -t flag
- name: Ensure /run/sshd exists
ansible.builtin.file:
path: /run/sshd
state: directory
owner: root
group: root
mode: '0755'
# NOTE: order of preference for openssh-server ed25519 -> rsa
- name: "Algorithms | enable ed25519 authentication algorithm"
notify: Restart sshd
ansible.builtin.lineinfile:
path: /etc/ssh/sshd_config
regexp: '^HostKey /etc/ssh/ssh_host_ed25519_key'
line: 'HostKey /etc/ssh/ssh_host_ed25519_key'
validate: sshd -f %s -t
- name: "Algorithms | enable the RSA authentication algorithm"
notify: Restart sshd
ansible.builtin.lineinfile:
path: /etc/ssh/sshd_config
regexp: '^HostKey /etc/ssh/ssh_host_rsa_key'
line: 'HostKey /etc/ssh/ssh_host_rsa_key'
validate: sshd -f %s -t
- name: "Algorithms | disable the ECDSA algorithm (deemed to be less safe)"
notify: Restart sshd
ansible.builtin.lineinfile:
path: /etc/ssh/sshd_config
regexp: '^HostKey /etc/ssh/ssh_host_ecdsa_key'
state: absent
validate: sshd -f %s -t
- name: "Algorithms | disable the DSA algorithm (considered to be defunct)"
notify: Restart sshd
ansible.builtin.lineinfile:
path: /etc/ssh/sshd_config
regexp: '^HostKey /etc/ssh/ssh_host_dsa_key'
state: absent
validate: sshd -f %s -t