ansible_role_sshd/templates/sshd_config.j2

# Attention, local changew will be overwritten
# MIT (C) L3D <l3d@c3woc.de>
# {{ ansible_managed }}
# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.

{% if sshd__version_is_above_eight | default(false) | bool %}
Include /etc/ssh/sshd_config.d/*.conf
{% endif %}

# Networking
Port {{ sshd__port }}
AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

TCPKeepAlive yes

{% if sshd__manage_key_algorithmus | bool %}
# Key exchange
{{ 'HostkeyAlgorithms ' }}
{%- for algo in sshd__key_algorithmus -%}
{{ algo }}{{ "," if not loop.last }}
{%- endfor %}
{% endif %}

{{ 'KexAlgorithms ' }}
{%- for algo in sshd__kex_algorithmus -%}
{{ algo }}{{ "," if not loop.last }}
{%- endfor %}


# Ciphers and keying
#RekeyLimit default none

{{ 'Ciphers ' }}
{%- for cipher in sshd__ciphers -%}
{{ cipher }}{{ "," if not loop.last }}
{%- endfor %}

# Logging
SyslogFacility AUTH
LogLevel INFO


# Macs
{{ 'MACs ' }}
{%- for mac in sshd__macs -%}
{{ mac }}{{ "," if not loop.last }}
{%- endfor %}

# Server Authentication
Protocol 2


{% if sshd__manage_key_types | bool -%}
# host key types
{% for key in sshd__key_types %}
HostKey /etc/ssh/ssh_host_{{ key }}_key
{% endfor %}
{%- endif %}

{% if sshd__manage_kex_algorithmus | bool -%}
# HostKeyAlgorithms
# Maybe not available in openssh 6.7
{{ 'HostKeyAlgorithms ' }}
{%- for key in sshd__key_algorithmus -%}
{{ key }}{{ "," if not loop.last }}
{%- endfor %}
{% endif %}


# Client authentication
MaxAuthTries 6
MaxSessions 10
PasswordAuthentication {{ sshd__password_authentication | ternary('yes', 'no') }}
ChallengeResponseAuthentication no
PubkeyAuthentication yes
PermitRootLogin without-password
LoginGraceTime 120
StrictModes yes
X11Forwarding {{ sshd__xforwarding | ternary('yes', 'no') }}

AllowTcpForwarding yes
#GatewayPorts no
#X11DisplayOffset 10
#X11UseLocalhost yes
#PermitTTY yes

PrintMotd no
PrintLastLog yes
TCPKeepAlive yes

#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS no
#PidFile /var/run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none
#VersionAddendum none

# no default banner path
#Banner none


# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

# User Authentication
{% if sshd__restrict_users -%}
  AllowUsers {{ sshd__allowed_users|join(' ') }}
{% endif %}

{% if sshd__restrict_groups -%}
  AllowUsers {{ sshd__allowed_groups|join(' ') }}
{%- endif %}

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

PrintMotd no

# sftp (required by ansible)
# Subsystem sftp /usr/lib/openssh/sftp-server
{% if ansible_os_family == 'RedHat' %}
Subsystem sftp /usr/libexec/openssh/sftp-server
{% else %}
Subsystem sftp /usr/lib/openssh/sftp-server
{% endif %}