If Nftables is not installed you can install it and start it with these commands. Use nftables firewall to accept only port 22 SSH/SFTP. ssh Setting up basic security Generating good passwords sudo apt install pwgen Sudo systemctl status ssh Recommended SSH client The OpenSSH server is already running on Ubuntu server, but if you are using Ubuntu Desktop you can install and start the Openssh server. Here are some tips on using a dedicated SFTP server running Ubuntu 20.04/22.04. In Some tips on downloading and uploading DCPs and large files I wrote about the different ways I send large files:
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