【SFTP】How do I setup and Use SFTP?

OpenBSD manual page server

https://man.openbsd.org/sftp-server

OpensshSftpChrootCodeExecution

https://www.halfdog.net/Security/2018/OpensshSftpChrootCodeExecution

OpenSSH/Cookbook/File Transfer with SFTP

https://en.wikibooks.org/wiki/OpenSSH/Cookbook/File_Transfer_with_SFTP

How to Setup SFTP-only User Accounts on CentOS 7

https://www.vultr.com/docs/setup-sftp-only-user-accounts-on-centos-7

How To Use SFTP to Securely Transfer Files with a Remote Server?

https://www.digitalocean.com/community/tutorials/how-to-use-sftp-to-securely-transfer-files-with-a-remote-server

How To Enable SFTP Without Shell Access on CentOS 7

https://www.digitalocean.com/community/tutorials/how-to-enable-sftp-without-shell-access-on-centos-7

SSH Essentials: Working with SSH Servers, Clients, and Keys

https://www.digitalocean.com/community/tutorials/ssh-essentials-working-with-ssh-servers-clients-and-keys

How To Configure Chroot Environments for Testing on an Ubuntu 12.04 VPS?

https://www.digitalocean.com/community/tutorials/how-to-configure-chroot-environments-for-testing-on-an-ubuntu-12-04-vps

OpenSSH/Cookbook/Public Key Authenticationhttps://en.wikibooks.org/wiki/OpenSSH/Cookbook/Public_Key_Authentication

https://en.wikibooks.org/wiki/OpenSSH/Cookbook/Public_Key_Authentication

OpenSSH/Cookbook/File Transfer with SFTP

https://en.wikibooks.org/wiki/OpenSSH/Cookbook/File_Transfer_with_SFTP

OpenSSH/Logging and Troubleshooting

https://en.wikibooks.org/wiki/OpenSSH/Logging_and_Troubleshooting#Debugging_a_server_configuration

rsyslog: how to bind rulesets to unix sockets (imuxsock)？

https://unix.stackexchange.com/questions/45226/rsyslog-how-to-bind-rulesets-to-unix-sockets-imuxsock

imuxsock messages in syslog and system becomes unresponsive

https://serverfault.com/questions/444061/imuxsock-messages-in-syslog-and-system-becomes-unresponsive