cloudamatic/mu

#       $OpenBSD: sshd_config,v 1.80 2008/07/02 02:24:18 djm 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.

#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

# 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 yes
#StrictModes yes
#MaxAuthTries 6
MaxAuthTries 4

#MaxSessions 10

#RSAAuthentication yes
#PubkeyAuthentication yes
#AuthorizedKeysFile     .ssh/authorized_keys
#AuthorizedKeysCommand none
#AuthorizedKeysCommandRunAs nobody

# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2

HostbasedAuthentication no

# 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 yes

# To disable tunneled clear text passwords, change to no here!
#PasswordAuthentication yes

PermitEmptyPasswords no

<% begin
    if node['application_attributes']['sshd_allow_password_auth'] %>
PasswordAuthentication yes
<%
  else %>
    PasswordAuthentication no
<%  end
rescue NoMethodError %>
PasswordAuthentication no
<% end %>


# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes
ChallengeResponseAuthentication no

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

# GSSAPI options
#GSSAPIAuthentication no
GSSAPIAuthentication yes
#GSSAPICleanupCredentials yes
GSSAPICleanupCredentials yes
#GSSAPIStrictAcceptorCheck yes
#GSSAPIKeyExchange no

# 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 yes

# 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 yes
#GatewayPorts no
X11Forwarding no
#X11Forwarding yes

#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
PermitUserEnvironment no
#Compression delayed
ClientAliveInterval 300
ClientAliveCountMax 0
#ShowPatchLevel no
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10
#PermitTunnel no
#ChrootDirectory none

# no default banner path
#Banner none

Banner /etc/issue.net

# override default of no subsystems
Subsystem       sftp    internal-sftp

# Example of overriding settings on a per-user basis
#Match User anoncvs
#       X11Forwarding no
#       AllowTcpForwarding no
#       ForceCommand cvs server
PermitRootLogin without-password
UseDNS no

Ciphers aes256-ctr
MACs hmac-sha2-256,hmac-sha2-512
KexAlgorithms diffie-hellman-group-exchange-sha256

# If we've set AllowGroups, use that instead of restricting to ec2-user
<%
begin
    if !node['application_attributes']['sshd_allow_groups'].empty? %>
AllowGroups <%= node['application_attributes']['sshd_allow_groups'] %> root
<%
    else
    %>
AllowUsers ec2-user root
<%
    end
rescue NoMethodError %>
AllowUsers ec2-user root
<%
end
%>

# Support SVN-only servers, while we're at it
<%
begin
    if node['application_attributes']['svn_only_group'] %>
Match Group <%= node['application_attributes']['svn_only_group'] %>
    ForceCommand /usr/bin/svnserve -t
<%
    end
rescue NoMethodError
end
%>

# Support SFTP-only servers, while we're at it
<%
begin
    if node['application_attributes']['sftp_only_group'] %>
Match Group <%= node['application_attributes']['sftp_only_group'] %>
    ForceCommand internal-sftp
<%  begin
            if node['application_attributes']['sftp_chroot'] %>
    ChrootDirectory <%= node['application_attributes']['sftp_chroot'] %>
<%
            end
        rescue NoMethodError %>
    ChrootDirectory /home/
<%
        end
    end
rescue NoMethodError
end
%>