June 2025
Beginner to intermediate
1180 pages
37h 48m
English
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23.2 Configuration and Security
The configuration files for sshd are located in the /etc/ssh directory. For the server configuration, sshd_config is responsible. (Do not confuse the file with ssh_config for the client configuration!)
Usually, sshd_config can be left unchanged; the SSH server should work right away. By default, the communication takes place via IP port 22 by default. If you have special requirements, you will find a lot more information in the man pages.
A component of the SSH server is the sftp server. This is a secure alternative to a regular FTP server. The sftp functions are usually available automatically as soon as the SSH server is running. If necessary, you should take a look at the Subsystem sftp line in sshd_config ...
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