1 1.4 adam # $NetBSD: sshd_config,v 1.4 2010/11/21 18:29:49 adam Exp $ 2 1.4 adam # $OpenBSD: sshd_config,v 1.81 2009/10/08 14:03:41 markus Exp $ 3 1.1 christos 4 1.1 christos # This is the sshd server system-wide configuration file. See 5 1.1 christos # sshd_config(5) for more information. 6 1.1 christos 7 1.1 christos # The strategy used for options in the default sshd_config shipped with 8 1.1 christos # OpenSSH is to specify options with their default value where 9 1.1 christos # possible, but leave them commented. Uncommented options change a 10 1.1 christos # default value. 11 1.1 christos 12 1.1 christos #Port 22 13 1.1 christos #AddressFamily any 14 1.1 christos #ListenAddress 0.0.0.0 15 1.1 christos #ListenAddress :: 16 1.1 christos 17 1.4 adam # The default requires explicit activation of protocol 1 18 1.4 adam #Protocol 2 19 1.1 christos 20 1.1 christos # HostKey for protocol version 1 21 1.1 christos #HostKey /etc/ssh/ssh_host_key 22 1.1 christos # HostKeys for protocol version 2 23 1.1 christos #HostKey /etc/ssh/ssh_host_rsa_key 24 1.1 christos #HostKey /etc/ssh/ssh_host_dsa_key 25 1.1 christos 26 1.1 christos # Lifetime and size of ephemeral version 1 server key 27 1.1 christos #KeyRegenerationInterval 1h 28 1.1 christos #ServerKeyBits 1024 29 1.1 christos 30 1.1 christos # Logging 31 1.1 christos # obsoletes QuietMode and FascistLogging 32 1.1 christos #SyslogFacility AUTH 33 1.1 christos #LogLevel INFO 34 1.1 christos 35 1.1 christos # Authentication: 36 1.1 christos 37 1.2 christos LoginGraceTime 600 38 1.3 dyoung #PermitRootLogin no 39 1.1 christos #StrictModes yes 40 1.1 christos #MaxAuthTries 6 41 1.1 christos #MaxSessions 10 42 1.1 christos 43 1.1 christos #RSAAuthentication yes 44 1.1 christos #PubkeyAuthentication yes 45 1.1 christos #AuthorizedKeysFile .ssh/authorized_keys 46 1.1 christos 47 1.1 christos # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts 48 1.1 christos #RhostsRSAAuthentication no 49 1.1 christos # similar for protocol version 2 50 1.1 christos #HostbasedAuthentication no 51 1.1 christos # Change to yes if you don't trust ~/.ssh/known_hosts for 52 1.1 christos # RhostsRSAAuthentication and HostbasedAuthentication 53 1.1 christos #IgnoreUserKnownHosts no 54 1.1 christos # Don't read the user's ~/.rhosts and ~/.shosts files 55 1.1 christos #IgnoreRhosts yes 56 1.1 christos 57 1.1 christos # To disable tunneled clear text passwords, change to no here! 58 1.1 christos #PasswordAuthentication yes 59 1.1 christos #PermitEmptyPasswords no 60 1.1 christos 61 1.1 christos # Change to no to disable s/key passwords 62 1.1 christos #ChallengeResponseAuthentication yes 63 1.1 christos 64 1.1 christos # Kerberos options 65 1.1 christos #KerberosAuthentication no 66 1.1 christos #KerberosOrLocalPasswd yes 67 1.1 christos #KerberosTicketCleanup yes 68 1.1 christos #KerberosGetAFSToken no 69 1.1 christos 70 1.1 christos # GSSAPI options 71 1.1 christos #GSSAPIAuthentication no 72 1.1 christos #GSSAPICleanupCredentials yes 73 1.1 christos 74 1.1 christos #AllowAgentForwarding yes 75 1.1 christos #AllowTcpForwarding yes 76 1.1 christos #GatewayPorts no 77 1.1 christos #X11Forwarding no 78 1.2 christos # If you use xorg from pkgsrc then uncomment the following line. 79 1.2 christos #XAuthLocation /usr/pkg/bin/xauth 80 1.1 christos #X11DisplayOffset 10 81 1.1 christos #X11UseLocalhost yes 82 1.1 christos #PrintMotd yes 83 1.1 christos #PrintLastLog yes 84 1.1 christos #TCPKeepAlive yes 85 1.1 christos #UseLogin no 86 1.1 christos #UsePrivilegeSeparation yes 87 1.2 christos UsePam yes 88 1.1 christos #PermitUserEnvironment no 89 1.1 christos #Compression delayed 90 1.1 christos #ClientAliveInterval 0 91 1.1 christos #ClientAliveCountMax 3 92 1.1 christos #UseDNS yes 93 1.1 christos #PidFile /var/run/sshd.pid 94 1.1 christos #MaxStartups 10 95 1.1 christos #PermitTunnel no 96 1.1 christos #ChrootDirectory none 97 1.1 christos 98 1.1 christos # no default banner path 99 1.1 christos #Banner none 100 1.1 christos 101 1.1 christos # override default of no subsystems 102 1.1 christos Subsystem sftp /usr/libexec/sftp-server 103 1.1 christos 104 1.2 christos # the following are HPN related configuration options 105 1.2 christos # tcp receive buffer polling. disable in non autotuning kernels 106 1.2 christos #TcpRcvBufPoll yes 107 1.3 dyoung 108 1.2 christos # allow the use of the none cipher 109 1.2 christos #NoneEnabled no 110 1.2 christos 111 1.3 dyoung # disable hpn performance boosts. 112 1.2 christos #HPNDisabled no 113 1.2 christos 114 1.2 christos # buffer size for hpn to non-hpn connections 115 1.2 christos #HPNBufferSize 2048 116 1.2 christos 117 1.2 christos 118 1.1 christos # Example of overriding settings on a per-user basis 119 1.1 christos #Match User anoncvs 120 1.1 christos # X11Forwarding no 121 1.1 christos # AllowTcpForwarding no 122 1.1 christos # ForceCommand cvs server 123