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Saltstack Official OpenSSH Formula
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openssh-formula/openssh/files/sshd_config

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  1. {% from "openssh/map.jinja" import sshd_config with context %}

  2. {#- present in sshd_config and known in actual file options -#}

  3. {%- set processed_options = [] -%}

  4. 

  5. {#- generic renderer used for sshd matches, known options, -#}

  6. {#- and unknown options -#}

  7. {%- macro render_option(keyword, default, config_dict=sshd_config) -%}

  8.   {%- set value = config_dict.get(keyword, default) -%}

  9.   {%- if value is sameas true -%}

  10. {{ keyword }} yes

  11.   {%- elif value is sameas false -%}

  12. {{ keyword }} no

  13.   {%- elif value is string or value is number -%}

  14. {{ keyword }} {{ value }}

  15.   {%- else -%}

  16. {%- for single_value in value -%}

  17. {{ keyword }} {{ single_value }}

  18. {% endfor -%}

  19.   {%- endif -%}

  20. {%- endmacro -%}

  21. 

  22. {#- macros for render option according to present -#}

  23. {%- macro option_impl(keyword, default, present) -%}

  24.   {%- if present -%}

  25.     {%- do processed_options.append(keyword) -%}

  26.     {%- set prefix='' -%}

  27.   {%- else -%}

  28.     {%- set prefix='#' -%}

  29.   {%- endif -%}

  30.   {#- add prefix to keyword -#}

  31.   {%- set keyword = prefix ~ keyword -%}

  32. {{ render_option(keyword, default) }}

  33. {%- endmacro -%}

  34. 

  35. {#- macros for render option commented by default -#}

  36. {%- macro option(keyword, default, present) -%}

  37. {{ option_impl(keyword, default, keyword in sshd_config) }}

  38. {%- endmacro -%}

  39. 

  40. {#- macros for render option uncommented by default -#}

  41. {%- macro option_default_uncommented(keyword, default, present) -%}

  42. {{ option_impl(keyword, default, True) }}

  43. {%- endmacro -%}

  44. 

  45. {#- macro for collapsing a list into a string -#}

  46. {%- macro option_collapselist(keyword, sep) -%}

  47. {%- do processed_options.append(keyword) -%}

  48. {{keyword}} {{sshd_config.get(keyword)|join(sep)}}

  49. {%- endmacro -%}

  50. 

  51. {#- macro for handling an option that can be specified as a list or a string -#}

  52. {%- macro option_string_or_list(keyword, default, default_commented, sep=',') -%}

  53. {%- if sshd_config.get(keyword, '') is string -%}

  54.   {%- if default_commented -%}

  55. {{ option(keyword, default) }}

  56.   {%- else -%}

  57. {{ option_default_uncommented(keyword, default) }}

  58.   {%- endif -%}

  59. {%- else -%}

  60. {{ option_collapselist(keyword, sep) }}

  61. {%- endif -%}

  62. {%- endmacro -%}

  63. 

  64. {%- if sshd_config.get('ConfigBanner', False) -%}

  65. {{ sshd_config['ConfigBanner'] }}

  66. {%- else -%}

  67. # This file is managed by salt. Manual changes risk being overwritten.

  68. {%- endif %}

  69. # The contents of the original sshd_config are kept on the bottom for

  70. # quick reference.

  71. # See the sshd_config(5) manpage for details

  72. 

  73. # Specifies which address family should be used by sshd(8).

  74. # Valid arguments are any, inet (use IPv4 only), or inet6 (use IPv6 only)

  75. {{ option('AddressFamily', 'any') }}

  76. 

  77. # What ports, IPs and protocols we listen for

  78. {{ option('Port', 22) }}

  79. # Use these options to restrict which interfaces/protocols sshd will bind to

  80. {{ option('ListenAddress', ['::', '0.0.0.0']) }}

  81. {{ option_default_uncommented('Protocol', 2) }}

  82. # HostKeys for protocol version 2

  83. {{ option_default_uncommented('HostKey', ['/etc/ssh/ssh_host_rsa_key', '/etc/ssh/ssh_host_dsa_key', '/etc/ssh/ssh_host_ecdsa_key', '/etc/ssh/ssh_host_ed25519_key']) -}}

  84. 

  85. #Privilege Separation is turned on for security

  86. {{ option_default_uncommented('UsePrivilegeSeparation', 'yes') }}

  87. 

  88. # Lifetime and size of ephemeral version 1 server key

  89. {{ option_default_uncommented('KeyRegenerationInterval', 3600) }}

  90. {{ option_default_uncommented('ServerKeyBits', 1024) }}

  91. 

  92. # Logging

  93. {{ option_default_uncommented('SyslogFacility', 'AUTH') }}

  94. {{ option_default_uncommented('LogLevel', 'INFO') }}

  95. 

  96. # Session idle time out

  97. {{ option_default_uncommented('ClientAliveInterval', 0) }}

  98. {{ option_default_uncommented('ClientAliveCountMax', 3) }}

  99. 

  100. # Authentication:

  101. {{ option_default_uncommented('LoginGraceTime', 120) }}

  102. {{ option_default_uncommented('PermitRootLogin', 'yes') }}

  103. {{ option_default_uncommented('StrictModes', 'yes') }}

  104. {{ option_default_uncommented('MaxAuthTries', '6') }}

  105. {{ option_default_uncommented('MaxSessions', '10') }}

  106. 

  107. {{ option('DSAAuthentication', 'yes') }}

  108. {{ option_default_uncommented('RSAAuthentication', 'yes') }}

  109. {{ option_default_uncommented('PubkeyAuthentication', 'yes') }}

  110. {{ option('AuthorizedKeysFile', '%h/.ssh/authorized_keys') }}

  111. {{ option('AuthorizedKeysCommand', 'none') }}

  112. {{ option('AuthorizedKeysCommandUser', 'nobody') }}

  113. 

  114. # Don't read the user's ~/.rhosts and ~/.shosts files

  115. {{ option_default_uncommented('IgnoreRhosts', 'yes') }}

  116. # For this to work you will also need host keys in /etc/ssh_known_hosts

  117. {{ option_default_uncommented('RhostsRSAAuthentication', 'no') }}

  118. # similar for protocol version 2

  119. {{ option_default_uncommented('HostbasedAuthentication', 'no') }}

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

  121. {{ option('IgnoreUserKnownHosts', 'yes') }}

  122. 

  123. # To enable empty passwords, change to yes (NOT RECOMMENDED)

  124. {{ option_default_uncommented('PermitEmptyPasswords', 'no') }}

  125. 

  126. # Change to yes to enable challenge-response passwords (beware issues with

  127. # some PAM modules and threads)

  128. {{ option_default_uncommented('ChallengeResponseAuthentication', 'no') }}

  129. {{ option('AuthenticationMethods', 'publickey,keyboard-interactive') }}

  130. 

  131. # Change to no to disable tunnelled clear text passwords

  132. {{ option('PasswordAuthentication', 'yes') }}

  133. 

  134. # Kerberos options

  135. {{ option('KerberosAuthentication', 'no') }}

  136. {{ option('KerberosGetAFSToken', 'no') }}

  137. {{ option('KerberosOrLocalPasswd', 'yes') }}

  138. {{ option('KerberosTicketCleanup', 'yes') }}

  139. 

  140. # GSSAPI options

  141. {{ option('GSSAPIAuthentication', 'no') }}

  142. {{ option('GSSAPICleanupCredentials', 'yes') }}

  143. 

  144. {{ option_default_uncommented('X11Forwarding', 'yes') }}

  145. {{ option('AllowTcpForwarding', 'yes') }}

  146. {{ option_default_uncommented('X11DisplayOffset', '10') }}

  147. {{ option_default_uncommented('PrintMotd', 'no') }}

  148. {# Bug in FreeBSD 10.3 (?) See https://lists.freebsd.org/pipermail/freebsd-stable/2016-April/084501.html #}

  149. {% if not (salt['grains.get']('os') == 'FreeBSD' and salt['grains.get']('osrelease') == '10.3') -%}

  150. {{ option_default_uncommented('PrintLastLog', 'yes') }}

  151. {% endif -%}

  152. {{ option_default_uncommented('TCPKeepAlive', 'yes') }}

  153. {{ option('UseLogin', 'no') }}

  154. 

  155. {{ option('MaxStartups', '10:30:60') }}

  156. {{ option('Banner', '/etc/issue.net') }}

  157. 

  158. # Allow client to pass locale environment variables

  159. {{ option_default_uncommented('AcceptEnv', 'LANG LC_*') }}

  160. 

  161. {{ option_default_uncommented('Subsystem', 'sftp /usr/lib/openssh/sftp-server') }}

  162. 

  163. {% if not salt['grains.get']('os') == 'OpenBSD' -%}

  164. # Set this to 'yes' to enable PAM authentication, account processing,

  165. # and session processing. If this is enabled, PAM authentication will

  166. # be allowed through the ChallengeResponseAuthentication and

  167. # PasswordAuthentication.  Depending on your PAM configuration,

  168. # PAM authentication via ChallengeResponseAuthentication may bypass

  169. # the setting of "PermitRootLogin without-password".

  170. # If you just want the PAM account and session checks to run without

  171. # PAM authentication, then enable this but set PasswordAuthentication

  172. # and ChallengeResponseAuthentication to 'no'.

  173. {{ option_default_uncommented('UsePAM', 'yes') }}

  174. {%- endif %}

  175. 

  176. # DNS resolve and map remote IP addresses

  177. {{ option('UseDNS', 'yes') }}

  178. 

  179. # Restricting Users and Hosts

  180. # example:

  181. #  AllowUsers vader@10.0.0.1 maul@sproing.evil.com luke

  182. #  AllowGroups wheel staff

  183. #

  184. # Keep in mind that using AllowUsers or AllowGroups means that anyone

  185. # not Matching one of the supplied patterns will be denied access by default.

  186. # Also, in order for sshd to allow access based on full or partial hostnames it

  187. # needs to to a DNS lookup

  188. #

  189. # DenyUsers

  190. {{ option('DenyUsers', '') }}

  191. # AllowUsers

  192. {{ option('AllowUsers', '') }}

  193. # DenyGroups

  194. {{ option('DenyGroups', '') }}

  195. # AllowGroups

  196. {{ option('AllowGroups', '') }}

  197. 

  198. # Specifies the available KEX (Key Exchange) algorithms.

  199. {{ option_string_or_list('KexAlgorithms', 'ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1', True) }}

  200. 

  201. # Specifies the ciphers allowed for protocol version 2.

  202. {{ option_string_or_list('Ciphers', 'aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se', True) }}

  203. 

  204. # Specifies the available MAC (message authentication code) algorithms.

  205. {{ option_string_or_list('MACs', 'hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96', True) }}

  206. 

  207. {# Handling unknown in salt template options #}

  208. {%- for keyword in sshd_config.keys() %}

  209.   {#- Matches have to be at the bottom and should be handled differently -#}

  210.   {%- if not keyword in processed_options and keyword != 'matches' -%}

  211. {#- send a blank default as it doesn't matter #}

  212. {{ render_option(keyword, '') }}

  213.   {%- endif -%}

  214. {%- endfor %}

  215. 

  216. {# Handle matches last as they need to go at the bottom #}

  217. {%- if 'matches' in sshd_config %}

  218.   {%- for match in sshd_config['matches'].values() %}

  219. Match {{ match['type'].keys()[0] }} {{ match['type'].values()[0] }}

  220.     {%- for keyword in match['options'].keys() %}

  221.     {{ render_option(keyword, '', config_dict=match['options']) }}

  222.     {%- endfor %}

  223.   {%- endfor %}

  224. {%- endif %}

  225. 

  226. {#- vim: set ft=jinja : #}