IaC/ansible/roles/sshd_setup/templates/sshd_config.j2

Port {{ sshd.listen.port | default('22') }}
AddressFamily {{ sshd.listen.family | default('any') }}
{% if (sshd.listen.family is defined and sshd.listen.family == 'inet') or (sshd.listen.family is defined and sshd.listen.family == 'any') -%}
{% if sshd.listen.ipv4 is defined -%}
{% for address in sshd.listen.ipv4 -%}
ListenAddress {{ address }}
{% endfor -%}
{% else -%}
ListenAddress 0.0.0.0
{% endif -%}
{% endif -%}
{% if (sshd.listen.family is defined and sshd.listen.family == 'inet6') or (sshd.listen.family is defined and sshd.listen.family == 'any') -%}
{% if sshd.listen.ipv6 is defined -%}
{% for address in sshd.listen.ipv6 -%}
ListenAddress {{ address }}
{% endfor -%}
{% else -%}
ListenAddress ::
{% endif -%}
{% endif -%}

#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_ecdsa_key
#HostKey /etc/ssh/ssh_host_ed25519_key

# Ciphers and keying
#RekeyLimit default none

# Logging
#SyslogFacility AUTH
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
#PermitRootLogin prohibit-password
#StrictModes yes
#MaxAuthTries 6
#MaxSessions 10

PubkeyAuthentication {{ sshd.auth.pubkey | default('yes') }}

# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
# but this is overridden so installations will only check .ssh/authorized_keys
AuthorizedKeysFile      .ssh/authorized_keys

#AuthorizedPrincipalsFile none

#AuthorizedKeysCommand none
#AuthorizedKeysCommandUser nobody

# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication {{ sshd.auth.password | default('yes') }}
PermitEmptyPasswords {{ sshd.auth.empty | default('no') }}

# Change to no to disable s/key passwords
KbdInteractiveAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
#KerberosGetAFSToken no

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the KbdInteractiveAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via KbdInteractiveAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and KbdInteractiveAuthentication to 'no'.
UsePAM yes

AllowAgentForwarding {{ sshd.forwarding.agent | default('no') }}
#AllowTcpForwarding yes
#GatewayPorts no
X11Forwarding {{ sshd.forwarding.x11 | default('no') }}
#X11DisplayOffset 10
#X11UseLocalhost yes
#PermitTTY yes
PrintMotd no # pam does that
#PrintLastLog yes
#TCPKeepAlive yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS no
#PidFile /run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none

# no default banner path
# Banner Connected to {{ ansible_fqdn | default('host.') }}

# override default of no subsystems
Subsystem       sftp    /usr/lib/ssh/sftp-server

# Example of overriding settings on a per-user basis
#Match User anoncvs
#       X11Forwarding no
#       AllowTcpForwarding no
#       PermitTTY no
#       ForceCommand cvs server