Encryption
Encryption is the reversible process of turning information in its original form into its secret form. Decryption is the reverse process that turns information in its secret form into its original form.
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How to create your own mail server using Postfix and Dovecot on Amazon Web Services (AWS)
💡If your AWS account is not permitted to use port 25, you will not be able to send outgoing mail from your mail server. You will need to submit a support ticket at the link here: https://support.console.aws.amazon.com/support/contacts#/rdns-limits. Log into your Amazon Web
YubiKey and Pretty Good Privacy (PGP)
Tar
Random password
All Macs come with a pre-installed app called Terminal. You can find Terminal by navigating to Finder -> Go -> Utilities. Alternatively, you can find Terminal by launching Spotlight using Command + Space and typing in Terminal. Once you are in Terminal, you can use the openssl rand command