Strecth config

HowtoOpenSSH.md

@@ -45,8 +45,6 @@ serveur dépend du choix qui a été fait lors de l'installation.
 ├── moduli
 ├── ssh_config
 ├── sshd_config
-├── ssh_host_dsa_key
-├── ssh_host_dsa_key.pub
 ├── ssh_host_ecdsa_key
 ├── ssh_host_ecdsa_key.pub
 ├── ssh_host_ed25519_key
@@ -59,74 +57,142 @@ La configuration de base qu'on utilise (les options commentées sont
 les valeurs par défaut).
 
 ~~~
-# Package generated configuration file
+#	$OpenBSD: sshd_config,v 1.100 2016/08/15 12:32:04 naddy Exp $
-# See the sshd_config(5) manpage for details
 
-# What ports, IPs and protocols we listen for
+# This is the sshd server system-wide configuration file.  See
-Port 22
+# sshd_config(5) for more information.
-# Use these options to restrict which interfaces/protocols sshd will bind to
+
-#ListenAddress ::
+# 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 override the
+# default value.
+
+#Port 22
+#AddressFamily any
 #ListenAddress 0.0.0.0
-Protocol 2
+#ListenAddress ::
-# HostKeys for protocol version 2
+
-HostKey /etc/ssh/ssh_host_rsa_key
+#HostKey /etc/ssh/ssh_host_rsa_key
-HostKey /etc/ssh/ssh_host_dsa_key
+#HostKey /etc/ssh/ssh_host_ecdsa_key
-HostKey /etc/ssh/ssh_host_ecdsa_key
+#HostKey /etc/ssh/ssh_host_ed25519_key
-HostKey /etc/ssh/ssh_host_ed25519_key
+
-#Privilege Separation is turned on for security
+# Ciphers and keying
-UsePrivilegeSeparation yes
+#RekeyLimit default none
 
 # Logging
-SyslogFacility AUTH
+#SyslogFacility AUTH
-LogLevel INFO
+LogLevel VERBOSE
 
 # Authentication:
-LoginGraceTime 120
-PermitRootLogin no
-StrictModes yes
 
-RSAAuthentication yes
+#LoginGraceTime 2m
-PubkeyAuthentication yes
+#PermitRootLogin without-password
-#AuthorizedKeysFile     %h/.ssh/authorized_keys
+#StrictModes yes
+#MaxAuthTries 6
+#MaxSessions 10
 
+#PubkeyAuthentication yes
+
+# Expect .ssh/authorized_keys2 to be disregarded by default in future.
+#AuthorizedKeysFile	.ssh/authorized_keys .ssh/authorized_keys2
+
+#AuthorizedPrincipalsFile none
+
+#AuthorizedKeysCommand none
+#AuthorizedKeysCommandUser nobody
+
+# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
+#HostbasedAuthentication no
+# Change to yes if you don't trust ~/.ssh/known_hosts for
+# HostbasedAuthentication
+#IgnoreUserKnownHosts no
 # Don't read the user's ~/.rhosts and ~/.shosts files
-IgnoreRhosts yes
+#IgnoreRhosts yes
-# For this to work you will also need host keys in /etc/ssh_known_hosts
-RhostsRSAAuthentication no
-# similar for protocol version 2
-HostbasedAuthentication no
-# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
-#IgnoreUserKnownHosts yes
 
-# To enable empty passwords, change to yes (NOT RECOMMENDED)
+# To disable tunneled clear text passwords, change to no here!
-PermitEmptyPasswords no
+#PasswordAuthentication yes
+#PermitEmptyPasswords no
 
 # Change to yes to enable challenge-response passwords (beware issues with
 # some PAM modules and threads)
 ChallengeResponseAuthentication no
 
-# Change to no to disable tunnelled clear text passwords
+# Kerberos options
-#PasswordAuthentication yes
+#KerberosAuthentication no
+#KerberosOrLocalPasswd yes
+#KerberosTicketCleanup yes
+#KerberosGetAFSToken no
 
-X11Forwarding yes
+# GSSAPI options
-X11DisplayOffset 10
+#GSSAPIAuthentication no
-PrintMotd no
+#GSSAPICleanupCredentials yes
-PrintLastLog yes
+#GSSAPIStrictAcceptorCheck yes
-TCPKeepAlive yes
+#GSSAPIKeyExchange no
-#UseLogin no
-
-Subsystem sftp /usr/lib/openssh/sftp-server
 
+# Set this to 'yes' to enable 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
+# the setting of "PermitRootLogin without-password".
+# If you just want the PAM account and session checks to run without
+# PAM authentication, then enable this but set PasswordAuthentication
+# and ChallengeResponseAuthentication to 'no'.
 UsePAM yes
 
+#AllowAgentForwarding yes
+#AllowTcpForwarding yes
+#GatewayPorts no
+X11Forwarding yes
+#X11DisplayOffset 10
+#X11UseLocalhost yes
+#PermitTTY yes
+PrintMotd no
+#PrintLastLog yes
+#TCPKeepAlive yes
+#UseLogin no
+#UsePrivilegeSeparation sandbox
+#PermitUserEnvironment no
+#Compression delayed
+#ClientAliveInterval 0
+#ClientAliveCountMax 3
+#UseDNS no
+#PidFile /var/run/sshd.pid
+#MaxStartups 10:30:100
+#PermitTunnel no
+#ChrootDirectory none
+#VersionAddendum none
+
+# no default banner path
+#Banner none
+
+# Allow client to pass locale environment variables
+#AcceptEnv LANG LC_*
+
+# override default of no subsystems
+Subsystem	sftp	/usr/lib/openssh/sftp-server
+
+# Example of overriding settings on a per-user basis
+#Match User anoncvs
+#	X11Forwarding no
+#	AllowTcpForwarding no
+#	PermitTTY no
+#	ForceCommand cvs server
+
 AllowUsers johndoe janedoe alice bob
+
 Match Address 192.0.2.42
     PasswordAuthentication yes
 Match User alice bob
     PasswordAuthentication no
-
+Match Group adm
+    PasswordAuthentication no
 ~~~
 
+> **Note** : Les clés DSA sont dépréciés depuis Stretch.
+
 ### Log verbeux pour SFTP
 
 Pour augmenter la verbosité du sous-système sftp-server, notamment loguer les commandes SFTP, il suffit de passer l'option -l à l'appel de sftp-server dans `sshd_config` :