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Network communications go through "channels" called ports. You can restrict which ports are available ("open") for network communications, creating a barricade to unwanted network intrusion. Firewalls do this job for you.
So here I am, with a wonderful Wii, complete with Twilight Hack and Homebrew Menu installed, wondering if I could do something crazy like run Ubuntu on it. After some trial and error, it appears possible to do a debootstrap of an Ubuntu PowerPC installation and have it work!.
Nmap is a utility for network exploration or security auditing. It supports ping scanning (determine which hosts are up), many port scanning techniques, version detection (determine service protocols and application versions listening behind ports), and TCP/IP fingerprinting (remote host OS or device identification).
You have built a rock solid firewall, tested it with nmap scanning for ports that were open, locked down SSH with port knocking, restricted outgoing ports with iptables, setup psad to block attacks, and tcp_wrappers to limit access so you are set right? Well, not exactly....
With Ubuntu 14.04 closing in to the release date, which is set for April 17th, I took Lubuntu for a spin from the daily live ISO image. Lubuntu is the most lightweight distribution in the Ubuntu family (the other one being Xubuntu which uses Xfce), using LXDE (Lightweight X Desktop Environment), as well as a set of applications intended to be low on resources.
Buntfu.com is an auction site for Ubuntu/Linux-based usable systems where anyone can list their inventory. In the spirit of OpenSource and Ubuntu the site is completely free with no site fees, store fees, or closing cost fees.
For my money, the best desktop operating system is Linux -- MEPIS and OpenSUSE at the top with Ubuntu closing in fast, to be exact. But everyone has their own opinion, and over at PC Magazine some old friends and coworkers of mine decided to compare all the most popular desktop operating systems: Windows XP and Vista, Mac OS X 10.5.1 (Leopard), and Ubuntu 7.10.
If you haven't used Linux before, are new to Ubuntu, or would like a quick update on the latest in open source advancements for the desktop, then The Official Ubuntu Book is a great place to start.
