Summary
OpenBSD has its own FTP server called ftpd. It’s sufficient to transfer files among hosts in a simple and secure way.
How To Use
ftpd is installed as a daemon in OpenBSD as the OS is installed.
In order to use it, run rcctl enable and rcctl start, and it’s almost done.
Step 0: Before Configuration
The daemon is disabled by default:
$ doas rcctl check ftpd
ftpd(failed)
Step 1: Enable Daemon
$ doas rcctl enable ftpd
* Note: Here, /etc/rc.conf.local is updated:
$ cat /etc/rc.conf.local
ftpd_flags=
Step 2: Start Daemon
$ doas rcctl start ftpd
ftpd(ok)
FTP server is now running. As long as there is no network issues, you can establish ftp connection to the server 😉
* Note: Accessing as root is forbidden.
Reference: Additional Configuration
OpenBSD provides us several files, that is several ways, to add more configuration about such as chroot and authentication.