OpenSSH Configuriation_openssh syslogfacility local0

OpenSSH Server Configuration (Windows Host)

1.download the zipped file from the link below:
[link]:https://github.com/PowerShell/OpenSSH-Portable

2.install the openssh
unziped OpenSSH-Win64.zip to “C:\Program Files” then run
install-sshd.ps1 to install the sshd(use Bypass or set-executionpolicy remotesigned to get the permission if needs)

3.firewall setting.
powershell command(windows 10 only)

New-NetFirewallRule -Name sshd -DisplayName 'OpenSSH Server (sshd)' -Enabled True -Direction Inbound -Protocol TCP -Action Allow -LocalPort 22
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or under (Windows Defender Firewall with Advanced Security)

4. start the sshd

Start-service sshd
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Start-service ssh-agent
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check Task Manager to make sure the service is started.

5. sshd configuration
   open the config file C:\ProgramData\ssh\sshd_config

# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.

# 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
#ListenAddress ::

#HostKey __PROGRAMDATA__/ssh/ssh_host_rsa_key
#HostKey __PROGRAMDATA__/ssh/ssh_host_dsa_key
#HostKey __PROGRAMDATA__/ssh/ssh_host_ecdsa_key
#HostKey __PROGRAMDATA__/ssh/ssh_host_ed25519_key

# Ciphers and keying
#RekeyLimit default none

# Logging
SyslogFacility LOCAL0
LogLevel DEBUG3

# Authentication:

#LoginGraceTime 2m
PermitRootLogin yes
#StrictModes yes
StrictModes no
#MaxAuthTries 6
#MaxSessions 10

PubkeyAuthentication yes
RSAAuthentication yes

# The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2
# but this is overridden so installations will only check .ssh/authorized_keys
#AuthorizedKeysFile	.ssh\authorized_keys


#AuthorizedPrincipalsFile none

# For this to work you will also need host keys in %programData%/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!
PasswordAuthentication no
PermitEmptyPasswords no

# GSSAPI options
#GSSAPIAuthentication no

#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no
#PermitTTY yes
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#PermitUserEnvironment no
#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

# override default of no subsystems
Subsystem	sftp	sftp-server.exe

# Example of overriding settings on a per-user basis
#Match User anoncvs
#	AllowTcpForwarding no
#	PermitTTY no
#	ForceCommand cvs server

#Match Group administrators
#       AuthorizedKeysFile __PROGRAMDATA__/ssh/administrators_authorized_keys

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comment

Match Group administrators
AuthorizedKeysFile __PROGRAMDATA__/ssh/administrators_authorized_keys
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set

"PubkeyAuthentication yes"
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(enable debug info if needs)

SyslogFacility LOCAL0
LogLevel DEBUG3
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2

copy the public key to C:\USERS"username".ssh\authorized_keys
(change the name of pub key file into authorized_keys instead of creating a folder name authorized_keys )
restart the service then you can have access to ssh server without password.

ssh username@ip_address -i $(path_of_priviate_key) 
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