Postfix Hardening Guide for Security and Privacy

Postfix¬†Security and Privacy Postfix is one of the most used components on a server that needs to receive or send emails. With all its options available, it is easy to have a weak configuration. This security guide looks into Postfix hardening, to increase the defenses against spam, abuse, and leaking sensitive data. Time to start! Guide overview Why Postfix hardening Preparation Test the existing Postfix configuration Backup your Postfix configuration Find your Postfix version Hardening steps Basic hardening Disable VRFY […]

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Using encrypted documents with vim

Encrypting files with vim Everyone has secrets. Or at least some data you don’t want to show others, right? Vim is a common editor to be found on Linux systems. It has an option to create and use encrypted files. We will look at how to configure it and use this encryption capability. Encryption is the process of fiddling with data so that others no longer can’t read it. The idea is that you still can, so when we speak […]

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