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Sshd config

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(8.2 sshd_config default file)
m (Reverted edits by 83.248.177.186 (Talk) to last revision by 216.254.10.132)
 
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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 8.2-RELEASE system:
+
Example sshd_config file, from a newly installed 6.0-RELEASE system:
−
 
+
−
# $OpenBSD: sshd_config,v 1.81 2009/10/08 14:03:41 markus Exp $
+
−
# $FreeBSD: src/crypto/openssh/sshd_config,v 1.49.2.2.4.1 2010/12/21 17:09:25 kensmith Exp $
+
−
 
+
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# 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
+
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# FreeBSD has a few additional options.
+
−
 
+
−
#VersionAddendum FreeBSD-20100308
+
−
 
+
−
#Port 22
+
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#AddressFamily any
+
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#ListenAddress 0.0.0.0
+
−
#ListenAddress ::
+
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+
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# The default requires explicit activation of protocol 1
+
−
#Protocol 2
+
−
 
+
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# HostKey for protocol version 1
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#HostKey /etc/ssh/ssh_host_key
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−
# HostKeys for protocol version 2
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#HostKey /etc/ssh/ssh_host_rsa_key
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#HostKey /etc/ssh/ssh_host_dsa_key
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−
 
+
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# Lifetime and size of ephemeral version 1 server key
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#KeyRegenerationInterval 1h
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#ServerKeyBits 1024
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+
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# Logging
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−
# obsoletes QuietMode and FascistLogging
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#SyslogFacility AUTH
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#LogLevel INFO
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−
 
+
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# Authentication:
+
−
 
+
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#LoginGraceTime 2m
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−
#PermitRootLogin no
+
−
#StrictModes yes
+
−
#MaxAuthTries 6
+
−
#MaxSessions 10
+
−
 
+
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#RSAAuthentication yes
+
−
#PubkeyAuthentication yes
+
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#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
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#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
+
−
 
+
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# Change to yes to enable built-in password authentication.
+
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#PasswordAuthentication no
+
−
#PermitEmptyPasswords no
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−
 
+
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# Change to no to disable PAM authentication
+
−
#ChallengeResponseAuthentication yes
+
−
 
+
−
# Kerberos options
+
−
#KerberosAuthentication no
+
−
#KerberosOrLocalPasswd yes
+
−
#KerberosTicketCleanup yes
+
−
#KerberosGetAFSToken no
+
−
 
+
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# GSSAPI options
+
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#GSSAPIAuthentication no
+
−
#GSSAPICleanupCredentials yes
+
−
 
+
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# 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 and
+
−
# PasswordAuthentication.  Depending on your PAM configuration,
+
−
# PAM authentication via ChallengeResponseAuthentication may bypass
+
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# the setting of "PermitRootLogin without-password".
+
−
# If you just want the PAM account and session checks to run without
+
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# PAM authentication, then enable this but set PasswordAuthentication
+
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# and ChallengeResponseAuthentication to 'no'.
+
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#UsePAM yes
+
−
 
+
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#AllowAgentForwarding yes
+
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#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
+
−
#PermitTunnel no
+
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#ChrootDirectory none
+
−
 
+
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# no default banner path
+
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#Banner none
+
−
 
+
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# override default of no subsystems
+
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Subsystem sftp /usr/libexec/sftp-server
+
−
 
+
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# Example of overriding settings on a per-user basis
+
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#Match User anoncvs
+
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# X11Forwarding no
+
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# AllowTcpForwarding no
+
−
# ForceCommand cvs server
+
  
 +
#      $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
  
 
[[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
Retrieved from "http://freebsdwiki.net/index.php?title=Sshd_config&oldid=12471"
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