module-sshd/templates/sshd_config/CentOS_6.erb

#	$OpenBSD: sshd_config,v 1.73 2005/12/06 22:38:28 reyk Exp $

# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.

# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented.  Uncommented options change a
# default value.

<% unless (s=scope.lookupvar('sshd::head_additional_options')).empty? -%>
<%= s %>
<% end -%>

<% scope.lookupvar('sshd::ports').to_a.each do |port| -%>
<% if port == 'off' -%>
#Port -- disabled by puppet
<% else -%>
Port <%= port %>
<% end -%>
<% end -%>

# Use these options to restrict which interfaces/protocols sshd will bind to
<% scope.lookupvar('sshd::listen_address').to_a.each do |address| -%>
ListenAddress <%= address %>
<% end -%>

# Disable legacy (protocol version 1) support in the server for new
# installations. In future the default will change to require explicit
# activation of protocol 1
Protocol 2

# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key

# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
#ServerKeyBits 1024

# Logging
# obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
SyslogFacility AUTHPRIV
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
PermitRootLogin <%= scope.lookupvar('sshd::permit_root_login') %>

StrictModes <%= scope.lookupvar('sshd::strict_modes') %>

#MaxAuthTries 6

RSAAuthentication <%= scope.lookupvar('sshd::rsa_authentication') %>
PubkeyAuthentication <%= scope.lookupvar('sshd::pubkey_authentication') %>
AuthorizedKeysFile <%= scope.lookupvar('sshd::authorized_keys_file') %>
#AuthorizedKeysCommand none
#AuthorizedKeysCommandRunAs nobody

# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
RhostsRSAAuthentication <%= scope.lookupvar('sshd::rhosts_rsa_authentication') %>

# similar for protocol version 2
HostbasedAuthentication <%= scope.lookupvar('sshd::hostbased_authentication') %>

# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts <%= scope.lookupvar('sshd::ignore_rhosts') %>

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication <%= scope.lookupvar('sshd::password_authentication') %>

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords <%= scope.lookupvar('sshd::permit_empty_passwords') %>

# Change to no to disable s/key passwords
ChallengeResponseAuthentication <%= scope.lookupvar('sshd::challenge_response_authentication') %>

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

# 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 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 no
UsePAM <%= scope.lookupvar('sshd::use_pam') %>

# Accept locale-related environment variables
AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES
AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE
AcceptEnv XMODIFIERS

#AllowAgentForwarding yes
AllowTcpForwarding <%= scope.lookupvar('sshd::tcp_forwarding') %>
#GatewayPorts no
#X11Forwarding no
X11Forwarding <%= scope.lookupvar('sshd::x11_forwarding') %>
#X11DisplayOffset 10
#X11UseLocalhost yes
PrintMotd <%= scope.lookupvar('sshd::print_motd') %>
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#ShowPatchLevel no
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10:30:100
#PermitTunnel no
#ChrootDirectory none

# no default banner path
#Banner /some/path

# override default of no subsystems
Subsystem      sftp    <%= (s=scope.lookupvar('sshd::sftp_subsystem')).empty? ? '/usr/libexec/openssh/sftp-server' : s %> 

<% unless (s=scope.lookupvar('sshd::allowed_users')).empty? -%>
AllowUsers <%= s %>
<% end -%>
<% unless (s=scope.lookupvar('sshd::allowed_groups')).empty? -%>
AllowGroups <%= s %>
<%- end -%>

<% if scope.lookupvar('sshd::hardened') == 'yes' -%>
<% if (scope.function_versioncmp([scope.lookupvar('::ssh_version'),'6.5'])) >= 0 -%>
KexAlgorithms curve25519-sha256@libssh.org
Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr
MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-ripemd160-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,umac-128@openssh.com
<% else -%>
Ciphers aes256-ctr
MACs hmac-sha1
<% end -%>
<% end -%>

# Example of overriding settings on a per-user basis
#Match User anoncvs
#      X11Forwarding no
#      AllowTcpForwarding no
#      ForceCommand cvs server
#
<% unless (s=scope.lookupvar('sshd::tail_additional_options')).empty? -%>
<%= s %>
<% end -%>