ansible_role_sshd/defaults/main.yml

---
sshd:
  # set the ssh server port
  port: 22
  # ssh password authorisatuin (not recomended)
  password_authentication: false
  # should we disable not selected ssh key types?
  manage_key_types: true
  # choose ssh server allowed key types
  key_types:
    - ed25519
    # - rsa
    # - ecdsa
    # - dsa # (do not use!)

  key_algorithmus:
    - 'ssh-ed25519-cert-v01@openssh.com'
    - 'ssh-ed25519'
    # - 'ecdsa-sha2-nistp521-cert-v01@openssh.com'
    # - 'ecdsa-sha2-nistp384-cert-v01@openssh.com'
    # - 'ecdsa-sha2-nistp256-cert-v01@openssh.com'
    # - 'rsa-sha2-512-cert-v01@openssh.com'
    # - 'rsa-sha2-256-cert-v01@openssh.com'
    # - 'ssh-rsa-cert-v01@openssh.com'
    # - 'ecdsa-sha2-nistp521'
    # - 'ecdsa-sha2-nistp384'
    # - 'ecdsa-sha2-nistp256'
    # - 'rsa-sha2-512'
    # - 'rsa-sha2-256'
    # - 'ssh-rsa'

  kex_algorithmus:
    - 'curve25519-sha256@libssh.org'
    - 'diffie-hellman-group-exchange-sha256'
    # - 'diffie-hellman-group-exchange-sha1'
    # - 'diffie-hellman-group14-sha1'
    # - 'diffie-hellman-group1-sha1'

  ciphers:
    - 'chacha20-poly1305@openssh.com'
    - 'aes256-gcm@openssh.com'
    # - 'aes256-ctr'
    # - 'aes256-cbc'
    # - 'aes128-ctr'
    # - 'aes128-cbc'
  macs:
    - 'hmac-sha2-512-etm@openssh.com'
    - 'hmac-sha2-256-etm@openssh.com'
    # - 'hmac-sha2-512'
    # - 'hmac-sha2-256'
    # - 'hmac-ripemd160-etm@openssh.com'
    # - 'umac-128-etm@openssh.com'
    # - 'hmac-sha1'
  # Enable AllowUsers and AllowGroups options
  restrict_users: True
  allowed_users:
    - "root"
    - "ansible"
  restrict_groups: True
  allowed_groups:
    - "root"
    - "admins"
  xforwarding: True

#
### Forcing only ed25519 SSH keys
#only_allow_ed25519: true
#
## Allow login with password?
#
### Allow optional cryptho methods (NOT RECOMENDED)
#generate_ecdsa_too: false
#use_diffie_hellman_group_exchange_sha256: false
#u#se_aes256_ctr: false
#u#se_hmac_sha2_512: false
###
#do_not_delete_legacy_ssh_keys: true

# perform simple version check for this role? (true is recomended)
submodules_versioncheck: false