1 1.1.1.15 christos # $OpenBSD: sshd_config,v 1.101 2017/03/14 07:19:07 djm Exp $ 2 1.1 christos 3 1.1 christos # This is the sshd server system-wide configuration file. See 4 1.1 christos # sshd_config(5) for more information. 5 1.1 christos 6 1.1 christos # The strategy used for options in the default sshd_config shipped with 7 1.1 christos # OpenSSH is to specify options with their default value where 8 1.1.1.4 christos # possible, but leave them commented. Uncommented options override the 9 1.1 christos # default value. 10 1.1 christos 11 1.1 christos #Port 22 12 1.1 christos #AddressFamily any 13 1.1 christos #ListenAddress 0.0.0.0 14 1.1 christos #ListenAddress :: 15 1.1 christos 16 1.1 christos #HostKey /etc/ssh/ssh_host_rsa_key 17 1.1 christos #HostKey /etc/ssh/ssh_host_dsa_key 18 1.1.1.3 christos #HostKey /etc/ssh/ssh_host_ecdsa_key 19 1.1.1.8 christos #HostKey /etc/ssh/ssh_host_ed25519_key 20 1.1 christos 21 1.1.1.7 christos # Ciphers and keying 22 1.1.1.7 christos #RekeyLimit default none 23 1.1.1.7 christos 24 1.1 christos # Logging 25 1.1 christos #SyslogFacility AUTH 26 1.1 christos #LogLevel INFO 27 1.1 christos 28 1.1 christos # Authentication: 29 1.1 christos 30 1.1 christos #LoginGraceTime 2m 31 1.1.1.11 christos #PermitRootLogin prohibit-password 32 1.1 christos #StrictModes yes 33 1.1 christos #MaxAuthTries 6 34 1.1 christos #MaxSessions 10 35 1.1 christos 36 1.1 christos #PubkeyAuthentication yes 37 1.1.1.4 christos 38 1.1.1.4 christos # The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2 39 1.1.1.4 christos # but this is overridden so installations will only check .ssh/authorized_keys 40 1.1.1.4 christos AuthorizedKeysFile .ssh/authorized_keys 41 1.1 christos 42 1.1.1.5 christos #AuthorizedPrincipalsFile none 43 1.1.1.5 christos 44 1.1.1.6 christos #AuthorizedKeysCommand none 45 1.1.1.6 christos #AuthorizedKeysCommandUser nobody 46 1.1.1.6 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 #HostbasedAuthentication no 49 1.1 christos # Change to yes if you don't trust ~/.ssh/known_hosts for 50 1.1.1.14 christos # HostbasedAuthentication 51 1.1 christos #IgnoreUserKnownHosts no 52 1.1 christos # Don't read the user's ~/.rhosts and ~/.shosts files 53 1.1 christos #IgnoreRhosts yes 54 1.1 christos 55 1.1 christos # To disable tunneled clear text passwords, change to no here! 56 1.1 christos #PasswordAuthentication yes 57 1.1 christos #PermitEmptyPasswords no 58 1.1 christos 59 1.1 christos # Change to no to disable s/key passwords 60 1.1 christos #ChallengeResponseAuthentication yes 61 1.1 christos 62 1.1 christos #AllowAgentForwarding yes 63 1.1 christos #AllowTcpForwarding yes 64 1.1 christos #GatewayPorts no 65 1.1 christos #X11Forwarding no 66 1.1 christos #X11DisplayOffset 10 67 1.1 christos #X11UseLocalhost yes 68 1.1.1.8 christos #PermitTTY yes 69 1.1 christos #PrintMotd yes 70 1.1 christos #PrintLastLog yes 71 1.1 christos #TCPKeepAlive yes 72 1.1 christos #UseLogin no 73 1.1 christos #PermitUserEnvironment no 74 1.1 christos #Compression delayed 75 1.1 christos #ClientAliveInterval 0 76 1.1 christos #ClientAliveCountMax 3 77 1.1.1.9 christos #UseDNS no 78 1.1 christos #PidFile /var/run/sshd.pid 79 1.1.1.6 christos #MaxStartups 10:30:100 80 1.1 christos #PermitTunnel no 81 1.1 christos #ChrootDirectory none 82 1.1.1.5 christos #VersionAddendum none 83 1.1 christos 84 1.1 christos # no default banner path 85 1.1 christos #Banner none 86 1.1 christos 87 1.1 christos # override default of no subsystems 88 1.1 christos Subsystem sftp /usr/libexec/sftp-server 89 1.1 christos 90 1.1 christos # Example of overriding settings on a per-user basis 91 1.1 christos #Match User anoncvs 92 1.1 christos # X11Forwarding no 93 1.1 christos # AllowTcpForwarding no 94 1.1.1.8 christos # PermitTTY no 95 1.1 christos # ForceCommand cvs server 96