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
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Gnome 47.1 Released with a Few Fixes
The latest release of the Gnome desktop is all about fixing a few nagging issues and not about bringing new features into the mix.
-
System76 Unveils an Ampere-Powered Thelio Desktop
If you're looking for a new desktop system for developing autonomous driving and software-defined vehicle solutions. System76 has you covered.
-
VirtualBox 7.1.4 Includes Initial Support for Linux kernel 6.12
The latest version of VirtualBox has arrived and it not only adds initial support for kernel 6.12 but another feature that will make using the virtual machine tool much easier.
-
New Slimbook EVO with Raw AMD Ryzen Power
If you're looking for serious power in a 14" ultrabook that is powered by Linux, Slimbook has just the thing for you.
-
The Gnome Foundation Struggling to Stay Afloat
The foundation behind the Gnome desktop environment is having to go through some serious belt-tightening due to continued financial problems.
-
Thousands of Linux Servers Infected with Stealth Malware Since 2021
Perfctl is capable of remaining undetected, which makes it dangerous and hard to mitigate.
-
Halcyon Creates Anti-Ransomware Protection for Linux
As more Linux systems are targeted by ransomware, Halcyon is stepping up its protection.
-
Valve and Arch Linux Announce Collaboration
Valve and Arch have come together for two projects that will have a serious impact on the Linux distribution.
-
Hacker Successfully Runs Linux on a CPU from the Early ‘70s
From the office of "Look what I can do," Dmitry Grinberg was able to get Linux running on a processor that was created in 1971.
-
OSI and LPI Form Strategic Alliance
With a goal of strengthening Linux and open source communities, this new alliance aims to nurture the growth of more highly skilled professionals.