summaryrefslogtreecommitdiff
path: root/templates/sshd_config/Ubuntu.erb
blob: a326ab87714ba320ad40b53beedf3fc62d1e667a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
# This file is managed by Puppet, all local modifications will be overwritten
#
# Package generated configuration file
# See the sshd(8) manpage for details

<% unless (s=scope.lookupvar('::sshd::head_additional_options')).empty? -%>
<%= s %>
<% end -%>

# What ports, IPs and protocols we listen for
<% scope.lookupvar('::sshd::ports').to_a.each do |port| -%>
<% if port == 'off' -%>
#Port -- disabled by puppet
<% else -%>
Port <%= port %>
<% end -%>
<% end -%>

# Use these options to restrict which interfaces/protocols sshd will bind to
<% scope.lookupvar('::sshd::listen_address').to_a.each do |address| -%>
ListenAddress <%= address %>
<% end -%>
Protocol 2
# HostKeys for protocol version 2
<% scope.lookupvar('::sshd::hostkey_type').to_a.each do |hostkey_type| -%>
HostKey /etc/ssh/ssh_host_<%=hostkey_type %>_key
<% end -%>

#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin <%= scope.lookupvar('::sshd::permit_root_login') %>

StrictModes <%= scope.lookupvar('::sshd::strict_modes') %>

RSAAuthentication <%= scope.lookupvar('::sshd::rsa_authentication') %>

PubkeyAuthentication <%= scope.lookupvar('::sshd::pubkey_authentication') %>

AuthorizedKeysFile <%= scope.lookupvar('::sshd::authorized_keys_file') %>

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts <%= scope.lookupvar('::sshd::ignore_rhosts') %>
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication <%= scope.lookupvar('::sshd::rhosts_rsa_authentication') %>
# similar for protocol version 2
HostbasedAuthentication <%= scope.lookupvar('::sshd::hostbased_authentication') %>
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords <%= scope.lookupvar('::sshd::permit_empty_passwords') %>

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication <%= scope.lookupvar('::sshd::challenge_response_authentication') %>

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication <%= scope.lookupvar('::sshd::password_authentication') %>

# Kerberos options
KerberosAuthentication <%= scope.lookupvar('::sshd::kerberos_authentication') %>
KerberosOrLocalPasswd <%= scope.lookupvar('::sshd::kerberos_orlocalpasswd') %>
KerberosTicketCleanup <%= scope.lookupvar('::sshd::kerberos_ticketcleanup') %>

# GSSAPI options
GSSAPIAuthentication <%= scope.lookupvar('::sshd::gssapi_authentication') %>
GSSAPICleanupCredentials <%= scope.lookupvar('::sshd::gssapi_cleanupcredentials') %>

X11Forwarding <%= scope.lookupvar('::sshd::x11_forwarding') %>
X11DisplayOffset 10
PrintMotd <%= scope.lookupvar('::sshd::print_motd') %>
PrintLastLog yes
TCPKeepAlive yes

#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net
# do not reveal debian version (default is yes)
DebianBanner no

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem      sftp    <%= (s=scope.lookupvar('::sshd::sftp_subsystem')).empty? ? '/usr/lib/openssh/sftp-server' : s %>

# 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 <%= scope.lookupvar('::sshd::use_pam') %>

AllowTcpForwarding <%= scope.lookupvar('::sshd::tcp_forwarding') %>

AllowAgentForwarding <%= scope.lookupvar('::sshd::agent_forwarding') %>

<% unless (s=scope.lookupvar('::sshd::allowed_users')).empty? -%>
AllowUsers <%= s %>
<% end -%>
<% unless (s=scope.lookupvar('::sshd::allowed_groups')).empty? -%>
AllowGroups <%= s %>
<%- end -%>

<% if scope.lookupvar('::sshd::hardened') == 'yes' -%>
<% if (scope.function_versioncmp([scope.lookupvar('::ssh_version'),'6.5'])) >= 0 -%>
KexAlgorithms curve25519-sha256@libssh.org
Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,aes256-ctr
MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-ripemd160-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,hmac-ripemd160,umac-128@openssh.com
<% else -%>
Ciphers aes256-ctr
MACs hmac-sha1
<% end -%>
<% end -%>

<% unless (s=scope.lookupvar('::sshd::tail_additional_options')).empty? -%>
<%= s %>
<% end -%>