1 # $OpenBSD: sshd_config,v 1.87 2012/07/10 02:19:15 djm Exp $
3 # This is the sshd server system-wide configuration file. See
4 # sshd_config(5) for more information.
6 # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin
8 # The strategy used for options in the default sshd_config shipped with
9 # OpenSSH is to specify options with their default value where
10 # possible, but leave them commented. Uncommented options override the
13 # Note that some of DragonFly's defaults differ from OpenBSD's, and
14 # DragonFly has a few additional options.
16 #VersionAddendum DragonFly-20121028
20 #ListenAddress 0.0.0.0
23 # The default requires explicit activation of protocol 1
26 # HostKey for protocol version 1
27 #HostKey /etc/ssh/ssh_host_key
28 # HostKeys for protocol version 2
29 #HostKey /etc/ssh/ssh_host_rsa_key
30 #HostKey /etc/ssh/ssh_host_dsa_key
31 #HostKey /etc/ssh/ssh_host_ecdsa_key
33 # Lifetime and size of ephemeral version 1 server key
34 #KeyRegenerationInterval 1h
38 # obsoletes QuietMode and FascistLogging
45 # only allow root logins via public key pair
46 PermitRootLogin without-password
51 #RSAAuthentication yes
52 #PubkeyAuthentication yes
53 #PermitBlacklistedKeys no
55 # The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
56 # but this is overridden so installations will only check .ssh/authorized_keys
57 AuthorizedKeysFile .ssh/authorized_keys
59 #AuthorizedPrincipalsFile none
61 # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
62 RhostsRSAAuthentication no
63 # similar for protocol version 2
64 HostbasedAuthentication no
65 # Change to yes if you don't trust ~/.ssh/known_hosts for
66 # RhostsRSAAuthentication and HostbasedAuthentication
67 #IgnoreUserKnownHosts no
68 # Don't read the user's ~/.rhosts and ~/.shosts files
71 # To disable tunneled clear text passwords, change to no here!
72 # We disable cleartext passwords by default
73 PasswordAuthentication no
74 #PermitEmptyPasswords no
76 # Change to no to disable s/key and tunneled clear-text passwords
77 # when PAM is enabled. We disable this by default. Note that
78 # PAM is also disabled by default.
79 ChallengeResponseAuthentication no
82 #KerberosAuthentication no
83 #KerberosOrLocalPasswd yes
84 #KerberosTicketCleanup yes
85 #KerberosGetAFSToken no
88 #GSSAPIAuthentication no
89 #GSSAPICleanupCredentials yes
91 # Set this to 'yes' to enable PAM authentication, account processing,
92 # and session processing. If this is enabled, PAM authentication will
93 # be allowed through the ChallengeResponseAuthentication and
94 # PasswordAuthentication. Depending on your PAM configuration,
95 # PAM authentication via ChallengeResponseAuthentication may bypass
96 # the setting of "PermitRootLogin without-password".
97 # If you just want the PAM account and session checks to run without
98 # PAM authentication, then enable this but set PasswordAuthentication
99 # and ChallengeResponseAuthentication to 'no'.
102 #AllowAgentForwarding yes
103 #AllowTcpForwarding yes
112 UsePrivilegeSeparation sandbox # Default for new installations.
113 #PermitUserEnvironment no
115 #ClientAliveInterval 0
116 #ClientAliveCountMax 3
118 #PidFile /var/run/sshd.pid
121 #ChrootDirectory none
123 #XAuthLocation /usr/local/bin/xauth
125 # no default banner path
128 # override default of no subsystems
129 Subsystem sftp /usr/libexec/sftp-server
131 # the following are HPN related configuration options
132 # tcp receive buffer polling. disable in non autotuning kernels
135 # allow the use of the none cipher
138 # disable hpn performance boosts.
141 # buffer size for hpn to non-hpn connections
145 # Example of overriding settings on a per-user basis
148 # AllowTcpForwarding no
149 # ForceCommand cvs server