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types you want to support in your sshd_config. We use the ssh_version fact to determine the default hostkey types. Only enable rsa and ed25519 for ssh versions greater or equal to 6.5, otherwise enable rsa and dsa. Some distributions, such as debian, also enable ecdsa as a hostkey type, but this is a known bad NIST curve, so we do not enable that by default (thus deviating from the stock sshd config)
121 lines
4.3 KiB
Text
121 lines
4.3 KiB
Text
# This file is managed by Puppet, all local modifications will be overwritten
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#
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# Package generated configuration file
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# See the sshd_config(5) manpage for details
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<% unless (s=scope.lookupvar('sshd::head_additional_options')).empty? -%>
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<%= s %>
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<% end -%>
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# What ports, IPs and protocols we listen for
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<% scope.lookupvar('sshd::ports').to_a.each do |port| -%>
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<% if port == 'off' -%>
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#Port -- disabled by puppet
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<% else -%>
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Port <%= port %>
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<% end -%>
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<% end -%>
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# Use these options to restrict which interfaces/protocols sshd will bind to
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<% scope.lookupvar('sshd::listen_address').to_a.each do |address| -%>
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ListenAddress <%= address %>
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<% end -%>
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Protocol 2
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# HostKeys for protocol version 2
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<% scope.lookupvar('sshd::hostkey_type').to_a.each do |hostkey_type| -%>
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HostKey /etc/ssh/ssh_host_<%=hostkey_type %>_key
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<% end -%>
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#Privilege Separation is turned on for security
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UsePrivilegeSeparation yes
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# Lifetime and size of ephemeral version 1 server key
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KeyRegenerationInterval 3600
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ServerKeyBits 1024
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# Logging
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SyslogFacility AUTH
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LogLevel INFO
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# Authentication:
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LoginGraceTime 120
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PermitRootLogin <%= scope.lookupvar('sshd::permit_root_login') %>
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StrictModes <%= scope.lookupvar('sshd::strict_modes') %>
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RSAAuthentication <%= scope.lookupvar('sshd::rsa_authentication') %>
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PubkeyAuthentication <%= scope.lookupvar('sshd::pubkey_authentication') %>
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AuthorizedKeysFile <%= scope.lookupvar('sshd::authorized_keys_file') %>
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# Don't read the user's ~/.rhosts and ~/.shosts files
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IgnoreRhosts <%= scope.lookupvar('sshd::ignore_rhosts') %>
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# For this to work you will also need host keys in /etc/ssh_known_hosts
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RhostsRSAAuthentication <%= scope.lookupvar('sshd::rhosts_rsa_authentication') %>
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# similar for protocol version 2
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HostbasedAuthentication <%= scope.lookupvar('sshd::hostbased_authentication') %>
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# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
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#IgnoreUserKnownHosts yes
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# To enable empty passwords, change to yes (NOT RECOMMENDED)
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PermitEmptyPasswords <%= scope.lookupvar('sshd::permit_empty_passwords') %>
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# Change to yes to enable challenge-response passwords (beware issues with
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# some PAM modules and threads)
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ChallengeResponseAuthentication <%= scope.lookupvar('sshd::challenge_response_authentication') %>
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# Change to no to disable tunnelled clear text passwords
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PasswordAuthentication <%= scope.lookupvar('sshd::password_authentication') %>
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# Kerberos options
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KerberosAuthentication <%= scope.lookupvar('sshd::kerberos_authentication') %>
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#KerberosGetAFSToken no
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KerberosOrLocalPasswd <%= scope.lookupvar('sshd::kerberos_orlocalpasswd') %>
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KerberosTicketCleanup <%= scope.lookupvar('sshd::kerberos_ticketcleanup') %>
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# GSSAPI options
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GSSAPIAuthentication <%= scope.lookupvar('sshd::gssapi_authentication') %>
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GSSAPICleanupCredentials <%= scope.lookupvar('sshd::gssapi_cleanupcredentials') %>
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X11Forwarding <%= scope.lookupvar('sshd::x11_forwarding') %>
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X11DisplayOffset 10
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PrintMotd <%= scope.lookupvar('sshd::print_motd') %>
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PrintLastLog yes
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TCPKeepAlive yes
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#UseLogin no
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#MaxStartups 10:30:60
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#Banner /etc/issue.net
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# Allow client to pass locale environment variables
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AcceptEnv LANG LC_*
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Subsystem sftp <%= (s=scope.lookupvar('sshd::sftp_subsystem')).empty? ? '/usr/lib/openssh/sftp-server' : s %>
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# Set this to 'yes' to enable PAM authentication, account processing,
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# and session processing. If this is enabled, PAM authentication will
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# be allowed through the ChallengeResponseAuthentication and
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# PasswordAuthentication. Depending on your PAM configuration,
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# PAM authentication via ChallengeResponseAuthentication may bypass
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# the setting of "PermitRootLogin without-password".
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# If you just want the PAM account and session checks to run without
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# PAM authentication, then enable this but set PasswordAuthentication
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# and ChallengeResponseAuthentication to 'no'.
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UsePAM <%= scope.lookupvar('sshd::use_pam') %>
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AllowTcpForwarding <%= scope.lookupvar('sshd::tcp_forwarding') %>
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AllowAgentForwarding <%= scope.lookupvar('sshd::agent_forwarding') %>
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<% unless (s=scope.lookupvar('sshd::allowed_users')).empty? -%>
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AllowUsers <%= s %>
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<% end -%>
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<% unless (s=scope.lookupvar('sshd::allowed_groups')).empty? -%>
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AllowGroups <%= s %>
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<%- end -%>
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<% if scope.lookupvar('sshd::hardened_ssl') == 'yes' -%>
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Ciphers aes256-ctr
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MACs hmac-sha1
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<% end -%>
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<% unless (s=scope.lookupvar('sshd::tail_additional_options')).empty? -%>
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<%= s %>
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<% end -%>
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