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  • Technology delivers high data rates

    An emerging mobile broadband technology can deliver high-speed data services to workers wherever they are.

  • Everyday Linux gripes

    As you already know, if I have to sit down in front of a computer, I want it to be running the Gnome desktop on Linux. I've watched it mature from a downright ugly, needlessly complex playground for geeks, to an attractive, simple interface that holds its own against commercial alternatives. And yet, every day I still encounter rough edges that make me think there aren't nearly enough folks out there hacking away at this stuff. I'd like to watch.

  • Security technology targets the LAN

    Access-control lists, originally designed for routers to deny or admit packets entering a network from a WAN, have drawbacks in controlling a diverse group of users accessing LANs. ACLs have no knowledge of traffic-flow semantics or content, can't adjust access rights for individual users, and suffer scalability and performance limitations.

  • Biometric authentication

    In this computer-driven era, identity theft and the loss or disclosure of data and related intellectual property are growing problems. We each have multiple accounts and use multiple passwords on an ever-increasing number of computers and Web sites. Maintaining and managing access while protecting both the user's identity and the computer's data and systems has become increasingly difficult. Central to all security is the concept of authentication -- verifying that the user is who he claims to be.

  • Windows dressing

    The Windows graphical user interface (GUI) isn't quite as customisable as the open source desktops are. Microsoft makes Windows dressing less than straightforward by using a plethora of binary files, Registry entries and INI configuration files to determine the look and functionality of the XP GUI. But don't let that stop you: there are many ways to swap out that drab Redmond-designed interface for something more to your liking.

  • Explainer: Proposed standard simplifies VPLS

    Virtual Private LAN Service is an emerging technology that lets corporations and carriers segment voice, video and data traffic across a Multi-protocol Label Switching-based backbone network. For corporations, VPLS allows for multi-point VPNs that provide QoS for any traffic type. And carriers can use VPLS to build private IP segments for a corporation across a common MPLS backbone.

  • Coping with a DoS attack

    We keep hearing about Denial of Service attacks, and how they can bring large organisations to a standstill, yet do we really understand the full range of events that the term encompasses? What does make up a DoS (or distributed DoS) attack, how it is done, and what can you do to prevent it happening to you?

  • Using TCP Wrappers to restrict connections

    TCP Wrappers (formerly LOG_TCP) is one of the many security utilities written by Wietse Venema. It works by logging the client host name of incoming telnet, ftp, rsh, rlogin, finger etc. requests. The security options you can configure are: access control per host, domain and/or service, detection of host name spoofing or host address spoofing, and setting booby traps to implement an early-warning system.

  • Securing dynamic web pages

    This article highlights some of the specific security issues around the use of dynamic code environments, such as SSI, ASP and PHP, and what you can do to minimise the risks.

  • Security considerations when migrating from Unix to Linux

    The Linux server market is expected to grow by 35% from last year, according to research firm IDC. Many of these Linux systems are replacing Unix in corporations looking to reduce IT costs. However, at the same time, there are more attacks on Linux than ever before. So, if you're considering a migration from your Unix systems to Linux, it's important to keep security in mind.

  • Object storage ensures high scalability

    Fueled by the computational power of Linux clusters, data-intensive applications are pushing the limits of traditional storage architectures. Whether mapping the human genome, imaging the earth's substructure to find new energy reserves, or generating the latest blockbuster animated feature, these applications require extraordinary throughput.

  • How to interpret SAN worldwide names

    All devices on a storage area network need to be uniquely identifiable. This is to ensure that data transmission occurs between the correct source and target device across a SAN fabric or loop.

  • How to quickly Web-enable corporate apps

    With today's focus on efficiency, the ability for workers to access corporate data anytime, from anywhere is on the way to becoming a business best practice. When IT is tasked with implementing a remote access project, a number of stumbling blocks immediately present themselves. One of the largest problems IT must solve is how to provide secure remote access to any and all "legacy" applications (which I define as "anything in production!"), including mainframe and client/server, without requiring a complete rewrite of the applications to make them Web friendly.

  • Pitfalls of J2ME development

    J2ME does a splendid job of promoting application portability across a diverse set of embedded devices. But some J2ME specs are vague enough that each vendor's J2ME implementation might handle key sections of code in different ways. What follows is a rogue's gallery of maddening variations that can stymie application portability.

  • How many firewalls do I need?

    A reader writes: "All the news about the worm currently making the rounds got me thinking about adding a secondfirewall internally to protect really critical servers. I'm not sure the benefit would offset the cost. Is this something I should implement?"

  • 10G matures

    From the inception of its conceptual framework in late 1999 to the standardization of IEEE 802.3ae in mid 2001, 10G Ethernet has been one of the most anticipated and exciting technologies on the internetworking scene. Besides boasting throughput 10 times that of the already-blazing Gigabit Ethernet, 10G finally gives Ethernet-based networks the ability to contend with the more-established WAN technologies such as packet over SONET and ATM over high-speed OC/synchronous transfer mode circuits.

  • Keeping tabs on web activity

    As the importance of e-commerce increases, log reporting has become a very important tool for understanding web behavior. There are three main ways to log the activity of web visitors: application logging, web server logging, and client-side data collection. Each of these has benefits for understanding customer behavior, while each has limitations, too. Understanding the pros and cons of each approach is important when deciding which approach to use.

  • Getting ranked

    Google's prominence has made it an important source of traffic for most sites. This has made inclusion in Google's index an important marketing tool for most sites, and sites with higher rankings are the most likely to benefit.

  • Moving to mainframe Linux

    Mainframe Linux can boost application uptime and reduce support costs. But users and analysts recommend acting carefully when choosing which applications to move to the open-source operating system and when training staff in the required skills.

  • Explainer: AS2 secures documents using the Web

    Applicability Statement 2 is a draft standard from the Internet Engineering Task Force for securely exchanging business documents over the Internet, with guarantees in place to ensure a document is not lost.

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