Technologies and tools for safer networks
Security Strategies

Is your data safe? Are your borders protected? This month we examine some expert techniques for building more secure networks.
Real admins think about security all the time, and even if you're a casual user, it pays to know what the intruders know. Services that once were safe are now wide open unless you keep current with the changing times. This month, we examine some security strategies from the experts.
We start with a study on how to protect Voice over IP (VoIP) networks from eavesdroppers and other intruders. You'll learn about some of the encryption technologies available with VoIP and get some practical tips on isolating and protecting voice communications.
Next we'll examine the state of wireless network security. We'll present some strategies for how to make the best of a WEP network, and we'll show you how to maximize the security of later protocols such as WPA and WPA2.
Our next article describes how to use one-time passwords to add two-factor authentication to a secure website. You'll learn about the OTPauth PHP library, and we'll provide a detailed example showing how to set up your own online one-time password system.
The last article in this month's cover set looks at hping, a handy tool for creating test packets to explore intrusion scenarios and check the functionality of firewalls. But that's not all. If you're still looking for more inspired reading on security, turn to our Sysadmin section for an interesting case study on how to hack NFS 3.
You'll never have the perfect network or the perfect tools – the world of network security is changing all the time – and since you can never really pin it down, maybe the best strategy is to read on …
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Find SysAdmin Jobs
News
-
SparkyLinux 6.6 Now Available for Installation
The Debian-based SparkyLinux has a new point release that retools the live USB desktop creator and other changes that give it shiny new-ness.
-
SparkyLinux 6.6 Now Available for Installation
The Debian-based SparkyLinux has a new point release that retools the live USB desktop creator and other changes that give it shiny new-ness.
-
Escuelas Linux 8.0 Now Available
Just in time for its 25th anniversary, the developers of Escuelas Linux have released the latest version.
-
LibreOffice 7.5 Loaded with New Features and Improvements
The favorite office suite of the Linux community has a new release that includes some visual refreshing and new features across all modules.
-
The Next Major Release of Elementary OS Has Arrived
It's been over a year since the developers of elementary OS released version 6.1 (Jólnir) but they've finally made their latest release (Horus) available with a renewed focus on the user.
-
KDE Plasma 5.27 Beta Is Ready for Testing
The latest beta iteration of the KDE Plasma desktop is now available and includes some important additions and fixes.
-
Netrunner OS 23 Is Now Available
The latest version of this Linux distribution is now based on Debian Bullseye and is ready for installation and finally hits the KDE 5.20 branch of the desktop.
-
New Linux Distribution Built for Gamers
With a Gnome desktop that offers different layouts and a custom kernel, PikaOS is a great option for gamers of all types.
-
System76 Beefs Up Popular Pangolin Laptop
The darling of open-source-powered laptops and desktops will soon drop a new AMD Ryzen 7-powered version of their popular Pangolin laptop.
-
Nobara Project Is a Modified Version of Fedora with User-Friendly Fixes
If you're looking for a version of Fedora that includes third-party and proprietary packages, look no further than the Nobara Project.