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Computer networking news, reviews, solutions, and analysis for IT professionals
  • Performance perplexities: Help! Where do I start?

    Posted May 7, 2001 - 3:34 pm

    Q: I have a performance problem. What do you need to know to help me?

  • Muttering about voice over IP

    Posted May 7, 2001 - 2:45 pm

    What is it about voice over IP that creates such passionate dogmatism? Far too much of what passes for debate about the future of voice over IP is dominated by assertions of perfect foreknowledge.
  • Fixed Wireless Provides Network Alternative

    Posted May 7, 2001 - 1:58 pm

    Kansas City, Mo.-based Air Charter Team, an air passenger charter company for VIPs, relies on fixed wireless technology for fast access to the Internet to help in booking flights and downloading streaming media.
  • Server appliances can ease IT's burden

    Posted May 7, 2001 - 1:03 pm

    Server appliances are basically "thin servers," which means they are dedicated to performing a single function on your network.
  • 3G wireless promises much but delivers little

    Posted May 7, 2001 - 11:33 am

    I hope I'm not being too hardheaded -- a real testa dura, you might say -- but when you get two examples of the same thing in the same week you begin to see the handwriting on the wall.
  • What's new in Solaris 7?

    Posted May 7, 2001 - 11:27 am

    that will affect performance and capacity planning?

  • Deploying your CMS without Web services is useless

    Posted May 7, 2001 - 11:10 am

    Whether you call it data, information, or content, one thing is clear: We're drowning in it. Everywhere you look across the enterprise, pockets of information exist that are inaccessible to most people in the company. And yet many people could benefit from the knowledge those packets of data represent.
  • Avaya rolls out new switches, acceleration devices

    Posted May 7, 2001 - 11:04 am

    Encryption boxes could help balance loads among Web servers and firewalls and speed up encrypted traffic.
  • Do collision levels accurately tell you the real story about your Ethernet?

    Posted May 7, 2001 - 10:59 am

    Q: Why do I have so many collisions on my Ethernet?

  • Ethernet grows up -- and out

    Posted May 7, 2001 - 10:10 am

    An IEEE task force is nearing completion of a standard to run Ethernet at a blistering 10 gigabits per second, which will mean an Ethernet that's not only 10 times faster, but also more widespread than ever before.
  • DSL disappointment

    Posted May 7, 2001 - 10:01 am

    One systems administrator experienced the ultimate installation impasse when he waited six months for DSL then learned he'll soon lose service from two locations.
  • 10 Gigabit Ethernet to step into N+I spotlight

    Posted May 7, 2001 - 9:54 am

    The amount of 10 Gigabit Ethernet network gear being introduced at NetWorld+ Interop 2001 this week means enterprise users could get the high-speed LAN technology in their networks sooner rather than later, and next-generation Ethernet services could be right around the corner.
  • How busy is the CPU, really?

    Posted May 4, 2001 - 4:12 pm

    how much, and does it matter?

  • Cisco makes play for metro area switching

    Posted May 4, 2001 - 3:40 pm

    Cisco Systems introduced optical switching technology that it hopes will increase the company's share of the service provider market.
  • Vendors bring network management under one roof

    Posted May 4, 2001 - 12:56 pm

    AS CORPORATE NETWORKS (and the traffic they carry) continue to grow in complexity, so does the need for management tools that combine hardware and application monitoring capabilities in the same package.
  • NetPro releases Active Directory tool

    Posted May 4, 2001 - 11:34 am

    NetPro will launch its DirectoryInsight tool, which provides change and configuration management for the directory service that is key to Windows 2000.
  • Unix Security: Trusting the security of law enforcement

    Posted May 3, 2001 - 4:53 pm

    Security is a major concern for police computers and law enforcement networks.
  • FBI: Lucent scientists sold secrets to China

    Posted May 3, 2001 - 4:41 pm

    Federal Bureau of Investigation officers on Thursday charged two Chinese Nationals working at Lucent Technologies and a third man with stealing source code and software and giving the trade secrets to a Chinese state-owned company.
  • More on iSCSI

    Posted May 3, 2001 - 2:46 pm

    Last week, I discussed Cisco entering the SAN fray, with the introduction of its SN5420 iSCSI router. The iSCSI protocol combines the use of block-level data movement, for high-speed access of data between a host and storage, with TCP/IP networks. Cisco is not the only company to announce support or intent to support iSCSI capabilities.
  • RapidStream does OC-3

    Posted May 3, 2001 - 2:31 pm

    RapidStream is introducing a new firewall called the RapidStream 1000 that is powerful enough to protect an OC-3 link to the Internet.
  • Adtran breaks into VPNs

    Posted May 3, 2001 - 2:17 pm

    If you are really into VPNs, you might not have heard about Adtran.
  • 802.11a and scalability

    Posted May 3, 2001 - 1:53 pm

    Because wireless LANs use shared-bandwidth media access control (MAC) mechanisms, scalability to larger volumes of users can be an issue. This is particularly true at current 802.11b speeds of a mere 11M bit/sec (effective throughput: 4M to 5M bit/sec). So will 802.11b?s faster successor, 802.11a, offer greater scalability?
  • DSL's Not Dead Yet

    Posted May 3, 2001 - 10:32 am

    Digital Subscriber Line growth may be sluggish in the United States, thanks to technical issues, the economic slowdown and frighteningly high customer acquisition costs. But the high-speed service isn't yet ready to go the way of ISDN and other potential-stunted technologies.

  • The short lifespan of VPN hardware vendors

    Posted May 2, 2001 - 4:22 pm

    The recent actions of VPN hardware vendor Radguard, while somewhat puzzling, point up a key fact about VPN vendors: There seem to be more than enough right now.
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