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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)
128 lines
4.1 KiB
Text
128 lines
4.1 KiB
Text
# Package generated configuration file
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# See the sshd(8) 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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# ...but breaks Pam auth via kbdint, so we have to turn it off
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# Use PAM authentication via keyboard-interactive so PAM modules can
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# properly interface with the user (off due to PrivSep)
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#PAMAuthenticationViaKbdInt no
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# Lifetime and size of ephemeral version 1 server key
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KeyRegenerationInterval 3600
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ServerKeyBits 768
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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 600
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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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# 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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# Don't read the user's ~/.rhosts and ~/.shosts files
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IgnoreRhosts <%= scope.lookupvar('sshd::ignore_rhosts') %>
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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 no to disable s/key passwords
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ChallengeResponseAuthentication <%= scope.lookupvar('sshd::challenge_response_authentication') %>
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# To disable tunneled clear text passwords, change to no here!
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PasswordAuthentication <%= scope.lookupvar('sshd::password_authentication') %>
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# To change Kerberos options
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#KerberosAuthentication no
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#KerberosOrLocalPasswd yes
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#AFSTokenPassing no
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#KerberosTicketCleanup no
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# Kerberos TGT Passing does only work with the AFS kaserver
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#KerberosTgtPassing yes
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X11Forwarding <%= scope.lookupvar('sshd::x11_forwarding') %>
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X11DisplayOffset 10
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KeepAlive 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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#ReverseMappingCheck yes
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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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HostbasedUsesNameFromPacketOnly yes
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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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PrintMotd <%= scope.lookupvar('sshd::print_motd') %>
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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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