Firewall Builder (fwbuilder) is a graphical application that can help you to configure IP traffic filtering. It can compile the filtering policy you define into many specifications, including iptables and various languages used by Cisco and Linksys routers.

Vyatta offers hardware and open source software for enterprise-level network infrastructure. Vyatta can turn any 32-bit x86 machine with at least one network interface into a network appliance that handles routing, firewall, and VPN tasks. The company released Vyatta Community Edition 4 in April, with improved scalability and feature enhancements.

An open developer community has desiged a tiny ARM9-based board for industrial applications, such as serial device servers. Manufactured by SystemBase of Korea, and designed by the "Embedded Module Developer Community" (EMDC), the "Eddy 2x" board comes with "Lemonix" real-time Linux and Eclipse-based "LemonIDE" tools.

Network latency and bandwidth are the two metrics most likely to be of interest when you benchmark a network. Even though most service and product advertising focuses on bandwidth, at times the latency can be a more important metric. Here's a look at three projects that include tools to test your network performance: nepim "network pipemeter," LMbench, and nuttcp.

Here's a scenario: you're locked out of plesk admin, you forgot the password and can't recover cause your email address is not set in the contact details.

When a program in Ubuntu such as crontab -e or dch -i, is used to edit a file, it uses a helper program called sensible-editor (provided by the debianutils package).

You know how when someone accidentally deletes their files or their hard drive crashes or some other apocalyptic event occurs, the first thing people ask is “where is your backup”? Of course, we’ve all seen it (*ahem* been there :/ ). It’s a bit unintuitive, because backups have no equivalent in the real world. If you drive your car into a lake, there’s no way to get it back.