Update 'sshd_config'

sshd_config

@@ -3,122 +3,28 @@
 # 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 override the
-# default value.
-
 Include /etc/ssh/sshd_config.d/*.conf
 
 Port 34022
-#AddressFamily any
-#ListenAddress 0.0.0.0
-#ListenAddress ::
-
-#HostKey /etc/ssh/ssh_host_rsa_key
-#HostKey /etc/ssh/ssh_host_ecdsa_key
-#HostKey /etc/ssh/ssh_host_ed25519_key
-
-# Ciphers and keying
-#RekeyLimit default none
-
-# Logging
-#SyslogFacility AUTH
-#LogLevel INFO
 
 # Authentication:
-
 LoginGraceTime 60
 PermitRootLogin no
-#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
+MaxAuthTries 4
+MaxSessions 10
 
-#AuthorizedPrincipalsFile none
+PubkeyAuthentication yes
 
-#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
-
-# To disable tunneled clear text passwords, change to no here!
+# Disable all password-based auth
 PasswordAuthentication no
 PermitEmptyPasswords no
+KbdInteractiveAuthentication no
 
-# Change to yes to enable challenge-response passwords (beware issues with
-# some PAM modules and threads)
-ChallengeResponseAuthentication no
-
-# Kerberos options
-#KerberosAuthentication no
-#KerberosOrLocalPasswd yes
-#KerberosTicketCleanup yes
-#KerberosGetAFSToken no
-
-# GSSAPI options
-#GSSAPIAuthentication no
-#GSSAPICleanupCredentials yes
-#GSSAPIStrictAcceptorCheck yes
-#GSSAPIKeyExchange no
-
-# 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 no
-#X11DisplayOffset 10
-#X11UseLocalhost yes
-#PermitTTY yes
 PrintMotd no
-#PrintLastLog yes
-#TCPKeepAlive yes
-#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
-#PasswordAuthentication yes
+Subsystem sftp	/usr/lib/openssh/sftp-server