An overlay network will help you block unwanted eavesdroppers on the Internet. We show you some of the leading open source options.

Bring your remote management into focus with these graphical front ends for SSH.

Diaspora, Friendica, and Mastodon are free and decentralized microblogging platforms that keep you in control of your data.

The Thunderbolt interface supports extremely fast data transfer rates, but be careful about what you plug into your port, because Thunderbolt devices access memory directly. We'll show you some Linux tools for locking down your Thunderbolt interface.

Some users trust their data to powerful file servers that advertise enterprise data protection, but your Network Attached Storage system might not be as safe as you think it is.

OpenSnitch, an application-based firewall, protects you from unwanted data leaks by letting you set customized rules for all your applications.

Maltrail is a lightweight analysis tool that examines network traffic and raises the alarm if it detects suspicious access or dubious name resolution.

Digital camera images often reveal personal information embedded in metadata. Several Linux tools let you remove unwanted metadata to help preserve your privacy.

Fuzzing is an important method for finding bugs and security vulnerabilities in software. Read on to find out what fuzzing is and which methods are commonly used today.

Canonical's ufw lets you configure your firewall without the hassle of the iptables tool, while reducing the risk of misconfiguration and simplifying maintenance.