sshd_config.erb

# sshd server configuration file, allowing root.  -*- conf -*-
#
# This sshd configuration permits root logins provided that they're done via
# GSS-API.  It will eventually become the default.  The default configuration
# values that we don't change are omitted from this file.

<%-
  # Split the ports at the commas.
  ports = @listen_ports.split(',')
  ports.each do |port|
-%>
Port <%= port %>
<%-
  end
-%>

<%-
  if (@listen_addresses != 'all')
    # Split the addresses at the commas.
    addresses = @listen_addresses.split(',')
    addresses.each do |address|
-%>
ListenAddress <%= address %>
<%-
    end
-%>

<%-
  end
-%>
# Only support protocol version 2.
Protocol 2

# Only support RSA keys, not DSA keys.
HostKey /etc/ssh/ssh_host_rsa_key

<% if @ed25519 then -%>
# Also support Ed25519 host keys.
HostKey /etc/ssh/ssh_host_ed25519_key

<% end -%>
# Increase the login grace period from 120 seconds to 300 seconds (5 minutes).
LoginGraceTime 300

# Prevent attackers from running long password guessing attacks.
MaxAuthTries <%= @max_tries %>

<% if @osfamily == 'RedHat' then -%>
# Some Red Hat systems are old enough that this has to be explicitly enabled.
UsePrivilegeSeparation yes

<% end -%>
# Disable all forms of host-based and public key authentication by default,
# since we use GSS-API (or passwords).
IgnoreRhosts yes
RSAAuthentication no
PubkeyAuthentication <%= @pubkey ? 'yes' : 'no' %>
RhostsRSAAuthentication no
HostbasedAuthentication <%= @hostbased ? 'yes' : 'no' %>

# Allow password authentication via PAM, but not empty passwords.
ChallengeResponseAuthentication yes
PasswordAuthentication <%= @password ? 'yes' : 'no' %>
UsePAM yes
PermitEmptyPasswords no

# Enable GSS-API authentication.  Eventually (squeeze and later) we will want
# to add GSSAPIStoreCredentialsOnRekey yes.
GSSAPIAuthentication yes
GSSAPICleanupCredentials yes