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logwatch on Ubuntu 16

logwatch is a utility that helps you track your system's log files, and it can monitor them on a schedule and email you a daily summary of its findings. Like most security packages, logwatch itself isn't a magic bullet, but it can be a useful component of a secure setup. If nothing else, it can greatly reduce the amount of time you spend troubleshooting problems.

Ubuntu 16 provides a recent version of logwatch:

Ubuntu dpkg Error

If you run a recent vintage of Ubuntu, you may encounter the following dpkg error when you're trying to update or install packages. This is usually caused by Ubuntu simultaneously running another instance of the package manager, often on system startup. Still, it can be annoying when you're trying to update your system.

Using ufw on Ubuntu

ufw, or the Uncomplicated Firewall, is a convenient front end for managing iptables on your Ubuntu server. This article provides a brief tutorial on some of the most commonly used commands. ufw is available in Ubuntu from the 8.04 release onward, and the commands here should apply to any current version.

Viewing the ufw Status

To view your firewall status and current rules:

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