Sshd config
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Whenever you edit sshd_config, you'll want to restart sshd: /etc/rc.d/sshd restart | Whenever you edit sshd_config, you'll want to restart sshd: /etc/rc.d/sshd restart | ||
− | Example sshd_config file, from a newly installed | + | Example sshd_config file, from a newly installed 6.0-RELEASE system: |
− | # $OpenBSD: sshd_config,v 1. | + | # $OpenBSD: sshd_config,v 1.72 2005/07/25 11:59:40 markus Exp $ |
− | # $FreeBSD: src/crypto/openssh/sshd_config,v 1. | + | # $FreeBSD: src/crypto/openssh/sshd_config,v 1.42.2.1 2005/09/11 16:50:35 |
− | + | des Exp $ | |
+ | |||
# This is the sshd server system-wide configuration file. See | # This is the sshd server system-wide configuration file. See | ||
# sshd_config(5) for more information. | # sshd_config(5) for more information. | ||
− | # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin | + | |
− | + | # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin | |
+ | |||
# The strategy used for options in the default sshd_config shipped with | # The strategy used for options in the default sshd_config shipped with | ||
# OpenSSH is to specify options with their default value where | # OpenSSH is to specify options with their default value where | ||
Line 16: | Line 18: | ||
# Note that some of FreeBSD's defaults differ from OpenBSD's, and | # Note that some of FreeBSD's defaults differ from OpenBSD's, and | ||
− | # FreeBSD has a few additional options. | + | # FreeBSD has a few additional options. |
− | #VersionAddendum FreeBSD- | + | #VersionAddendum FreeBSD-20050903 |
#Port 22 | #Port 22 | ||
+ | #Protocol 2 | ||
#AddressFamily any | #AddressFamily any | ||
#ListenAddress 0.0.0.0 | #ListenAddress 0.0.0.0 | ||
− | #ListenAddress :: | + | #ListenAddress :: |
− | + | ||
− | + | ||
− | + | ||
# HostKey for protocol version 1 | # HostKey for protocol version 1 | ||
#HostKey /etc/ssh/ssh_host_key | #HostKey /etc/ssh/ssh_host_key | ||
# HostKeys for protocol version 2 | # HostKeys for protocol version 2 | ||
− | + | #HostKey /etc/ssh/ssh_host_dsa_key | |
− | #HostKey /etc/ssh/ssh_host_dsa_key | + | |
# Lifetime and size of ephemeral version 1 server key | # Lifetime and size of ephemeral version 1 server key | ||
#KeyRegenerationInterval 1h | #KeyRegenerationInterval 1h | ||
− | #ServerKeyBits | + | #ServerKeyBits 768 |
# Logging | # Logging | ||
# obsoletes QuietMode and FascistLogging | # obsoletes QuietMode and FascistLogging | ||
#SyslogFacility AUTH | #SyslogFacility AUTH | ||
− | #LogLevel INFO | + | #LogLevel INFO |
− | # Authentication: | + | # Authentication: |
#LoginGraceTime 2m | #LoginGraceTime 2m | ||
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#StrictModes yes | #StrictModes yes | ||
#MaxAuthTries 6 | #MaxAuthTries 6 | ||
− | |||
#RSAAuthentication yes | #RSAAuthentication yes | ||
#PubkeyAuthentication yes | #PubkeyAuthentication yes | ||
− | #AuthorizedKeysFile .ssh/authorized_keys | + | #AuthorizedKeysFile .ssh/authorized_keys |
# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts | # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts | ||
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#IgnoreUserKnownHosts no | #IgnoreUserKnownHosts no | ||
# Don't read the user's ~/.rhosts and ~/.shosts files | # Don't read the user's ~/.rhosts and ~/.shosts files | ||
− | #IgnoreRhosts yes | + | #IgnoreRhosts yes |
# Change to yes to enable built-in password authentication. | # Change to yes to enable built-in password authentication. | ||
#PasswordAuthentication no | #PasswordAuthentication no | ||
− | #PermitEmptyPasswords no | + | #PermitEmptyPasswords no |
# Change to no to disable PAM authentication | # Change to no to disable PAM authentication | ||
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#KerberosOrLocalPasswd yes | #KerberosOrLocalPasswd yes | ||
#KerberosTicketCleanup yes | #KerberosTicketCleanup yes | ||
− | #KerberosGetAFSToken no | + | #KerberosGetAFSToken no |
# GSSAPI options | # GSSAPI options | ||
#GSSAPIAuthentication no | #GSSAPIAuthentication no | ||
− | #GSSAPICleanupCredentials yes | + | #GSSAPICleanupCredentials yes |
# Set this to 'no' to disable PAM authentication, account processing, | # Set this to 'no' to disable PAM authentication, account processing, | ||
− | # and session processing. If this is enabled, PAM authentication will | + | # and session processing. If this is enabled, PAM authentication will |
− | # be allowed through the ChallengeResponseAuthentication | + | # be allowed through the ChallengeResponseAuthentication mechanism. |
− | # | + | # Depending on your PAM configuration, this may bypass the setting of |
− | # | + | # PasswordAuthentication, PermitEmptyPasswords, and |
− | # | + | # "PermitRootLogin without-password". If you just want the PAM account and |
− | + | # session checks to run without PAM authentication, then enable this but set | |
− | + | # ChallengeResponseAuthentication=no | |
− | # | + | |
#UsePAM yes | #UsePAM yes | ||
− | |||
#AllowTcpForwarding yes | #AllowTcpForwarding yes | ||
#GatewayPorts no | #GatewayPorts no | ||
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#PidFile /var/run/sshd.pid | #PidFile /var/run/sshd.pid | ||
#MaxStartups 10 | #MaxStartups 10 | ||
− | |||
− | |||
# no default banner path | # no default banner path | ||
− | #Banner | + | #Banner /some/path |
− | + | ||
# override default of no subsystems | # override default of no subsystems | ||
− | Subsystem sftp /usr/libexec/sftp- | + | Subsystem sftp /usr/libexec/sftp-server |
− | + | ||
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[[Category:Important Config Files]] | [[Category:Important Config Files]] |
Latest revision as of 18:04, 1 August 2011
Whenever you edit sshd_config, you'll want to restart sshd: /etc/rc.d/sshd restart
Example sshd_config file, from a newly installed 6.0-RELEASE system:
# $OpenBSD: sshd_config,v 1.72 2005/07/25 11:59:40 markus Exp $ # $FreeBSD: src/crypto/openssh/sshd_config,v 1.42.2.1 2005/09/11 16:50:35 des Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options change a # default value. # Note that some of FreeBSD's defaults differ from OpenBSD's, and # FreeBSD has a few additional options. #VersionAddendum FreeBSD-20050903 #Port 22 #Protocol 2 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # HostKey for protocol version 1 #HostKey /etc/ssh/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh/ssh_host_dsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 768 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH #LogLevel INFO # Authentication: #LoginGraceTime 2m #PermitRootLogin no #StrictModes yes #MaxAuthTries 6 #RSAAuthentication yes #PubkeyAuthentication yes #AuthorizedKeysFile .ssh/authorized_keys # For this to work you will also need host keys in /etc/ssh/ssh_known_hosts #RhostsRSAAuthentication no # similar for protocol version 2 #HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # Change to yes to enable built-in password authentication. #PasswordAuthentication no #PermitEmptyPasswords no # Change to no to disable PAM authentication #ChallengeResponseAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes #KerberosGetAFSToken no # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes # Set this to 'no' to disable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication mechanism. # Depending on your PAM configuration, this may bypass the setting of # PasswordAuthentication, PermitEmptyPasswords, and # "PermitRootLogin without-password". If you just want the PAM account and # session checks to run without PAM authentication, then enable this but set # ChallengeResponseAuthentication=no #UsePAM yes #AllowTcpForwarding yes #GatewayPorts no #X11Forwarding yes #X11DisplayOffset 10 #X11UseLocalhost yes #PrintMotd yes #PrintLastLog yes #TCPKeepAlive yes #UseLogin no #UsePrivilegeSeparation yes #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #UseDNS yes #PidFile /var/run/sshd.pid #MaxStartups 10 # no default banner path #Banner /some/path # override default of no subsystems Subsystem sftp /usr/libexec/sftp-server