Annotation of src/usr.bin/ssh/sshd_config, Revision 1.97
1.97 ! deraadt 1: # $OpenBSD: sshd_config,v 1.96 2015/07/30 19:23:02 deraadt Exp $
1.27 niklas 2:
1.55 stevesk 3: # This is the sshd server system-wide configuration file. See
4: # sshd_config(5) for more information.
1.1 deraadt 5:
1.48 deraadt 6: # The strategy used for options in the default sshd_config shipped with
1.44 stevesk 7: # OpenSSH is to specify options with their default value where
1.83 dtucker 8: # possible, but leave them commented. Uncommented options override the
1.44 stevesk 9: # default value.
10:
11: #Port 22
1.70 djm 12: #AddressFamily any
1.15 markus 13: #ListenAddress 0.0.0.0
14: #ListenAddress ::
1.75 djm 15:
1.81 markus 16: # The default requires explicit activation of protocol 1
17: #Protocol 2
1.40 markus 18:
19: # HostKey for protocol version 1
1.47 deraadt 20: #HostKey /etc/ssh/ssh_host_key
1.40 markus 21: # HostKeys for protocol version 2
1.47 deraadt 22: #HostKey /etc/ssh/ssh_host_rsa_key
23: #HostKey /etc/ssh/ssh_host_dsa_key
1.82 naddy 24: #HostKey /etc/ssh/ssh_host_ecdsa_key
1.93 djm 25: #HostKey /etc/ssh/ssh_host_ed25519_key
1.40 markus 26:
27: # Lifetime and size of ephemeral version 1 server key
1.61 djm 28: #KeyRegenerationInterval 1h
1.80 djm 29: #ServerKeyBits 1024
1.90 dtucker 30:
31: # Ciphers and keying
32: #RekeyLimit default none
1.13 markus 33:
34: # Logging
1.71 djm 35: # obsoletes QuietMode and FascistLogging
1.44 stevesk 36: #SyslogFacility AUTH
37: #LogLevel INFO
1.13 markus 38:
1.40 markus 39: # Authentication:
40:
1.61 djm 41: #LoginGraceTime 2m
1.97 ! deraadt 42: #PermitRootLogin prohibit-password
1.44 stevesk 43: #StrictModes yes
1.69 dtucker 44: #MaxAuthTries 6
1.79 djm 45: #MaxSessions 10
1.44 stevesk 46:
47: #RSAAuthentication yes
48: #PubkeyAuthentication yes
1.84 djm 49:
50: # The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
51: # but this is overridden so installations will only check .ssh/authorized_keys
52: AuthorizedKeysFile .ssh/authorized_keys
1.86 djm 53:
54: #AuthorizedPrincipalsFile none
1.88 djm 55:
56: #AuthorizedKeysCommand none
57: #AuthorizedKeysCommandUser nobody
1.40 markus 58:
1.47 deraadt 59: # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
1.44 stevesk 60: #RhostsRSAAuthentication no
1.36 markus 61: # similar for protocol version 2
1.44 stevesk 62: #HostbasedAuthentication no
63: # Change to yes if you don't trust ~/.ssh/known_hosts for
64: # RhostsRSAAuthentication and HostbasedAuthentication
65: #IgnoreUserKnownHosts no
1.63 markus 66: # Don't read the user's ~/.rhosts and ~/.shosts files
67: #IgnoreRhosts yes
1.6 deraadt 68:
69: # To disable tunneled clear text passwords, change to no here!
1.44 stevesk 70: #PasswordAuthentication yes
71: #PermitEmptyPasswords no
1.30 markus 72:
1.44 stevesk 73: # Change to no to disable s/key passwords
74: #ChallengeResponseAuthentication yes
1.1 deraadt 75:
1.78 pyr 76: #AllowAgentForwarding yes
1.61 djm 77: #AllowTcpForwarding yes
78: #GatewayPorts no
1.44 stevesk 79: #X11Forwarding no
80: #X11DisplayOffset 10
1.45 stevesk 81: #X11UseLocalhost yes
1.92 djm 82: #PermitTTY yes
1.44 stevesk 83: #PrintMotd yes
84: #PrintLastLog yes
1.68 millert 85: #TCPKeepAlive yes
1.6 deraadt 86: #UseLogin no
1.87 djm 87: UsePrivilegeSeparation sandbox # Default for new installations.
1.57 markus 88: #PermitUserEnvironment no
1.72 markus 89: #Compression delayed
1.61 djm 90: #ClientAliveInterval 0
91: #ClientAliveCountMax 3
1.94 deraadt 92: #UseDNS no
1.61 djm 93: #PidFile /var/run/sshd.pid
1.89 dtucker 94: #MaxStartups 10:30:100
1.73 reyk 95: #PermitTunnel no
1.77 djm 96: #ChrootDirectory none
1.85 djm 97: #VersionAddendum none
1.17 jakob 98:
1.44 stevesk 99: # no default banner path
1.76 djm 100: #Banner none
1.32 deraadt 101:
1.44 stevesk 102: # override default of no subsystems
1.32 deraadt 103: Subsystem sftp /usr/libexec/sftp-server
1.74 dtucker 104:
105: # Example of overriding settings on a per-user basis
106: #Match User anoncvs
107: # X11Forwarding no
108: # AllowTcpForwarding no
1.92 djm 109: # PermitTTY no
1.74 dtucker 110: # ForceCommand cvs server