openssh/files/sshd_config

{%- from "openssh/map.jinja" import server with context %}

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
{%- if grains.os_family != 'CentOS' %}
HostKey /etc/ssh/ssh_host_ecdsa_key
{%- endif %}
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120

PermitRootLogin {% if server.get('permit_root_login', False) %}yes{% else %}no{% endif %}

StrictModes yes

RSAAuthentication yes

PubkeyAuthentication {% if server.get('public_key_auth', True) %}yes{% else %}no{% endif %}
AuthorizedKeysFile     %h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2

HostbasedAuthentication {% if server.get('host_auth', False) %}yes{% else %}no{% endif %}

# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
PasswordAuthentication {% if server.get('password_auth', True) %}yes{% else %}no{% endif %}

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

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

{%- if server.max_sessions is defined %}
MaxSessions {{ server.max_sessions }}
{%- else %}
MaxSessions 10
{%- endif %}
{%- if server.max_startups is defined %}
MaxStartups {{ server.max_startups }}
{%- else %}
#MaxStartups 10:30:60
{%- endif %}

{%- if server.banner is defined %}
Banner /etc/banner
{%- else %}
#Banner /etc/banner
{%- endif %}

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

Subsystem sftp {{ server.lib_dir }}/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication 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 ChallengeResponseAuthentication to 'no'.
UsePAM yes