Wireless Network Security

  • July 07, 2003 07 Jul'03

    Neoteris launches Web-conferencing software

    Today, Neoteris plunged into the Web-conferencing market with a new product that will compete directly with market leader WebEx. The Neoteris Meeting Series utilizes the company's existing secure remote access technology, and beta users have given ...

  • July 01, 2003 01 Jul'03

    Cisco makes CCNA program more accessible

    Cisco has created a two-test system for its Cisco Certified Network Associate program. The move makes the process easier for entry-level participants, while maintaining the quality of the certification.

  • June 30, 2003 30 Jun'03

    Network Management, MIBs and MPLS: Principles, Design and Implementation

    This book excerpt focuses on the principles and concepts of managing large enterprise networks.

  • June 30, 2003 30 Jun'03

    Growth focus led to Nortel's turmoil

    None of the big networking companies have had a good run during the past few years. The Internet bubble burst. Internet service providers folded. Telecom companies stopped buying equipment. Enterprises went into survival mode and slashed budgets. <...

  • June 25, 2003 25 Jun'03

    Cisco makes switch lines more niche friendly

    Cisco has added high-end features to its switching products for medium-sized businesses. The company is targeting schools and companies with remote offices, as those groups show more interest in IP telephony and bandwidth-intensive applications.

  • June 24, 2003 24 Jun'03

    Low-cost Enterasys routers take on Cisco

    Enterasys' new XSR 3000 routers are taking on Cisco with VPN, firewall and routing features. An analyst says the routers are designed with remote offices in mind.

  • June 16, 2003 16 Jun'03

    Router Expert: The router is the firewall, part 1-- An overview of the IOS firewall

    Expert Michael Martin examines the available options in the IOS firewall for implementing dynamic access control.

  • June 12, 2003 12 Jun'03

    Cisco's new switch the GI Joe of the network

    Whoever thought an Ethernet switch could help you make your train? Cisco's military-grade Catalyst 2955 switch is bringing Ethernet to new, more rugged environments, including a public transit authority that is using the appliance to keep its data, ...

  • June 12, 2003 12 Jun'03

    Reaping value from storage networks

    This chapter excerpt covers the cost of the storage networking layer by looking at the reasons to combine strategies and the value achieved by doing so across a common platform.

  • June 06, 2003 06 Jun'03

    Cisco IOS configurations in DSL architectures

    This chapter excerpt presents the configurations of the four basic TCP/IP architectures and Point-to-Point Protocol over Ethernet.

  • June 06, 2003 06 Jun'03

    Understanding Layer 2, 3, and 4 protocols

    This chapter excerpt explains the layers of the OSI model, switching, TCP, UDP, and VRRP.

  • June 06, 2003 06 Jun'03

    MPLS and VPN Architectures: Multicast VPN

    This chapter describes in detail how to achieve multicast services between multiple sites of a VPN that has an existing multicast network or is intending to deploy multicast.

  • May 28, 2003 28 May'03

    Traffic and Everything Like Traffic Dealing with Network Performance Degradation

    This White Paper explains network idiosyncrasies and degradations and discusses best practices to identify these network problems, leading to their resolution.

  • May 28, 2003 28 May'03

    School system gives Web caching high marks

    A large school system in North Carolina is using Network Appliance's Web caching software to improve network performance and block students from accessing inappropriate content. An analyst says Web caching technology can benefit a broad range of ...

  • May 21, 2003 21 May'03

    Voice, Video, and Data Network Convergence: Applications using the converged network

    Is the real driving force behind the deployment of converged networks saving money, or the advanced capabilities convergence makes possible? The real driving force, says this chapter of Voice, Video, and Data Network Convergence, is the ...

  • May 14, 2003 14 May'03

    CCIE Security: Operating Systems and Cisco Security Applications

    This chapter excerpt reviews two of today's most common end user operating systems, UNIX and Windows NT.

  • May 14, 2003 14 May'03

    Implementing Cisco IPv6 Networks: IPv6 Addressing

    Learn about IPv6 addressing and see sample configurations using the Cisco IOS technology to acquire basic knowledge to configure and operate routers in an IPv6 environment.

  • May 14, 2003 14 May'03

    OSPF Network Design Solutions: Redistribution

    When routing information from one routing protocol, such as OSPF, is redistributed into IGRP, you must be mindful of possible routing loops.

  • May 13, 2003 13 May'03

    Analyst: In converged networks, quality of service paramount

    Network convergence -- the movement of data, video and voice to one network -- is becoming a reality for a growing number of companies. While this approach can streamline a network, save capital costs and increase productivity, it can also cause a ...

  • May 08, 2003 08 May'03

    AT&T's Ianna: Last mile still the biggest challenge interviewed the president of AT&T's network services group, Frank Ianna, on the challenges around last mile technologies.

  • May 06, 2003 06 May'03

    Entuity update calms network storms

    The latest edition of Entuity's Eye of the Storm network management product examines several OSI layers to help avoid performance problems, and one test user says it has helped his company use fewer people to manage its network.

  • April 30, 2003 30 Apr'03

    N+I: CA's Kumar touts Unicenter on-demand

    Seemingly borrowing a page from IBM's playbook, Computer Associates CEO Sanjay Kumar used his N+I keynote Tuesday to introduce updates to CA's Unicenter network monitoring software. The updates enable on-demand access to as much network computing ...

  • April 30, 2003 30 Apr'03

    Special coverage: at Networld+Interop 2003

    We've gathered all our special coverage of Networld+Interop 2003 in one place. Check back frequently for our latest articles and other news and resources directly from the show floor in Las Vegas.

  • April 22, 2003 22 Apr'03

    Analyst, users differ on value of new network-monitoring approach

    Upstart network-management software vendor Fidelia is trying to earn a name for itself as an innovator in the network management field by tying network operations to specific business processes. An analyst says Fidelia's NetVigil provides a whole ...

  • April 21, 2003 21 Apr'03

    Getting started with the Cisco PIX firewall

    This chapter excerpt describes the basic preparation and configuration required to use the network firewall features of the Cisco PIX Firewall.

  • April 21, 2003 21 Apr'03

    Do you shoot trouble or does trouble shoot you? Practical studies in troubleshooting

    This chapter excerpt presents an introduction to troubleshooting; a review of standards, protocols, and industry models; and practical troubleshooting techniques.

  • April 16, 2003 16 Apr'03

    Packet Design offers router's eye view of the network

    Most of today's network monitoring tools provide a decent snapshot of devices, but few can offer a router's eye view of network traffic flows. A new product from Packet Design does just that, and both an analyst and a user explain how it can help ...

  • April 07, 2003 07 Apr'03

    Business use of IM threatened, but FaceTime comes to the rescue

    Instant messaging is a fast, convenient way to communicate with employees and business partners, but security risks are forcing companies to ban the practice. Is your company next? With help from vendor FaceTime, one bank found a way to keep the IMs...

  • April 03, 2003 03 Apr'03

    VoIP and VPN - Perfect together!

    Discover how easy VoIP deployment can be when combined with VPN making you an IT hero with management and the envy of all your colleagues!

  • March 31, 2003 31 Mar'03

    New tool diagnoses dual-mode access points

    Diagnosing wireless LAN problems usually requires special tools, but the latest product from Network Instruments offers hardwired and wireless LAN monitoring -- including dual-mode 802.11a/b access points -- all in one. One network admin says the ...

  • March 25, 2003 25 Mar'03

    Startup uses peer-to-peer to ease WAN bandwidth woes

    Use of video files is becoming more common in the enterprise, but wide area networks can quickly become congested by multiple copies of the same video. A company called Bandwiz is addressing that issue with a new product that uses peer-to-peer ...

  • March 21, 2003 21 Mar'03

    Cisco OSPF Command and Configuration Handbook: Route redistribution

    This chapter excerpt focuses on route redistribution commands, including concrete examples and diagrams.

  • March 21, 2003 21 Mar'03

    More on standard for bandwidth utilization over WAN circuit

    More on standard for bandwidth utilization over WAN circuit

  • March 21, 2003 21 Mar'03

    DWDM Network Designs and Engineering Solutions: WDM network design

    This chapter excerpt provides the reader with a firm foundation in a wavelength division multiplexing (WDM) and the basics of optical design.

  • March 21, 2003 21 Mar'03

    Traffic Engineering with MPLS: Quality of service

    This chapter excerpt focuses on quality of service (QoS) in traffic engineering, specifically covering the DiffServ architecture and interaction, EXP for packet forwarding, the Modular QoS CLI, and the emerging DiffServ-Aware Traffic Engineering ...

  • March 21, 2003 21 Mar'03

    Web-based VPNs offer cheaper, easier alternative

    Neoteris is one of a handful of companies now offering Web-based VPNs. According to a Neoteris customer and an analyst, client-free VPN products are gaining momentum because they provide a cheaper, easier way for remote workers to securely connect ...

  • March 20, 2003 20 Mar'03

    CTIA: School officials see value in on-campus wireless

    Wireless LANs can be expensive and complex, but educators from several universities at this week's CTIA Wireless 2003 conference say that wireless networks can provide a competitive advantage over other schools and create new ways to boost revenue.

  • March 19, 2003 19 Mar'03

    CTIA: Experts say wireless is worth the work

    There's no hiding the fact that wireless network deployments are often more complicated than IT managers expect. However, according to experts at this week's CTIA Wireless 2003 conference, wireless systems can provide a competitive advantage by ...

  • March 13, 2003 13 Mar'03

    Networking glossary

    View our glossary for the low-down on networking terms.

  • March 12, 2003 12 Mar'03

    TrelliSoft SRM features give Tivoli a fresh look

    The director of strategy for Tivoli's storage group says IBM's newly upgraded DB2 Content Manager can work with Tivoli Storage Manager to help determine where to store data on a network. Theresa O'Neil also elaborates on the benefits of storage ...

  • March 10, 2003 10 Mar'03

    3Com preps for enterprise-market comeback

    With the sale of its carrier-class technology unit, 3Com announced that it was refocusing on the enterprise networking market. However, analysts say that the company needs to clear several hurdles before it can compete with the established vendors.

  • March 06, 2003 06 Mar'03

    Sidestepping wireless LAN money pits

    Enterprise wireless LANs aren't just for early adopters anymore, but that doesn't mean they aren't expensive. One Gartner analyst says IT professionals need to consider a range of hidden costs before deploying a wireless network.

  • March 05, 2003 05 Mar'03

    Health care firm recovers lost time with Intellitactics tool

    One major health care provider found itself spending too much time addressing security-related problems, but a network security management tool from Intellitactics has enabled the company to look at dozens of events in the same amount of time it ...

  • March 03, 2003 03 Mar'03

    Cometa, iPass deal heats up hot spots

    A deal announced today between iPass and Cometa Networks will allow iPass business customers to use Cometa's Wi-Fi hot spot network. Experts believe the deal could spur more businesses to use public high-speed Internet connections, despite current ...

  • February 24, 2003 24 Feb'03

    Troubleshooting Remote Access Networks: Dial troubleshooting

    The troubleshooting approach in this chapter demonstrates the layer-by-layer and phase-by-phase approach to dial issues.

  • February 24, 2003 24 Feb'03

    Cisco Field Manual: Catalyst Switch Configuration -- VLANs and trunking

    Learn about configuring, creating, and configuring VLANs on a switch in this book excerpt.

  • February 18, 2003 18 Feb'03

    Cost of 10 Gig Ethernet switches coming down

    The cost of 10 Gigabit Ethernet switches is finally starting to come down, but that doesn't mean it's time for most companies to invest in them yet.

  • February 06, 2003 06 Feb'03

    Cisco sharpens router blades for remote networks

    Over the last eight months, Cisco Systems Inc. has been in the process of redefining its approach to infrastructure for branch offices. In response to the growing need for increased bandwidth and functionality in remote offices, the networking ...

  • February 05, 2003 05 Feb'03

    Small startup thinks big with single-box VoIP device

    Zultys Technologies is small company with big designs. The startup has hit the market with a single box that provides enterprise customers with standards-based VoIP.

  • February 02, 2003 02 Feb'03

    Answers on your questions on the ROI of VoIP

    The recent webcast "The ROI of VoIP" with Steve Leaden, president of Leaden Associates, covered a wide spectrum of ROI issues. Here we present Steve's responses to questions from the audience.

  • January 31, 2003 31 Jan'03

    VoIP over 802.11 wireless

    VoIP over 802.11 wireless Ask-the-Expert response

  • January 30, 2003 30 Jan'03

    Securing your network

    Securing your network eBook giveaway

  • January 30, 2003 30 Jan'03

    Editorial: The ROI of VoIP? It's an oxymoron

    Why aren't we seeing IP phones on all of our desks, despite vendor promises of cost reductions? Apparently, the necessary investment far outweighs the savings.

  • January 30, 2003 30 Jan'03

    New report examines IT customer satisfaction

    Sage Research Inc. has released a series of reports examining customer satisfaction with a broad range of IT products.

  • January 20, 2003 20 Jan'03

    Not many making the LEAP to PEAP

    Many companies have turned to authentication for wireless network security. Cisco's LEAP protocol is a leader of this pack, but it's proprietary. A certificate approach to authentication called PEAP may yet hurdle LEAP.

  • January 16, 2003 16 Jan'03

    Variable-length Subnet Masks

    The author explains the challenges of managing an address space subnetted into flexibly-sized subnets.

  • January 16, 2003 16 Jan'03

    Cisco Secure PIX Firewalls

    This excerpt covers general topics such as why network security is necessary, secure network design, categorizing network security threats, how network security is breached, and security policies.

  • January 16, 2003 16 Jan'03

    Fundamental IOS Software Architecture

    This chapter offers an overview of router operating system concepts and the IOS Software infrastructure, including processes, memory management, CPU scheduling, packet buffers, and device drivers.

  • January 16, 2003 16 Jan'03

    Troubleshooting IP Routing Protocols

    Read about debugs, configurations, and useful show commands to help you diagnose your router problems.

  • January 16, 2003 16 Jan'03

    Troubleshooting Cisco IP Telephony: Methodology and Approach

    Learn what steps to take and tools to use to identify and resolve the cause of IP telephony problems.

  • January 15, 2003 15 Jan'03

    Where do the risks to Cisco lie?

    With its incumbent competitors in disarray, Cisco Systems may make headway in the elusive service provider market, in addition to its core enterprise business, according to the451.

  • January 10, 2003 10 Jan'03

    Remote doctors land Whale for secure VPN access

    A Secure Sockets Layer VPN from Whale Communications is allowing physicians from a Kansas hospital to securely access e-mail, X-ray images and other patient information.

  • January 10, 2003 10 Jan'03

    Quick Takes: New VoIP gateway, PEAP support

    In this edition of Quick Takes, 3e Technologies announces its new voice over Internet protocol gateway and Interlink adds support for the PEAP security standard.

  • January 08, 2003 08 Jan'03

    IPv6 addressing: Format, types, ranges

    In this article on IPv6 addressing, learn about address types, address prefixes, special addresses and more.

  • December 23, 2002 23 Dec'02

    Puneet Mehta's 2003 predictions

    We asked our site experts to give us their industry predictions for the New Year. Here's what our network security expert Puneet Mehta had to say.

  • December 19, 2002 19 Dec'02

    Learn IPv6: Understanding the IPv6 transition

    An overview of what's new in IPv6 with Silvia Hagen, author of IPv6 Essentials.

  • December 19, 2002 19 Dec'02

    Cisco networking module offers cold, hard cache

    Cisco Systems has released a new content engine networking module that enables local caching and delivery of high-bandwidth content.

  • December 19, 2002 19 Dec'02

    Lisa Phifer's 2003 predictions

    We asked our site experts to give us their industry predictions for the New Year. Here's what wireless LAN expert Lisa Phifer had to say.

  • December 19, 2002 19 Dec'02

    Greg Ferro's 2003 predictions

    We asked our site experts to give us their industry predictions for the New Year. Here's what Greg Ferro, our Dr. Network forum moderator, had to say.

  • December 19, 2002 19 Dec'02

    Brandon Ross' 2003 predictions

    We asked our site experts to give us their industry predictions for the New Year. Here's what intelligent routing expert Brandon Ross had to say.

  • December 18, 2002 18 Dec'02

    Networking pros: Justify your worth or risk elimination

    Network professionals need to expand their skills in 2003 are prove their worth to avoid joining the ranks of the unemployed, according to the year-ahead forecast of site editor Susan Fogarty.

  • December 13, 2002 13 Dec'02

    Digital ink is the 'gee-whiz' in tablet PCs

    For now, technology in tablet PCs that lets companies transmit digital signatures is the key selling point for the mobile device.

  • December 13, 2002 13 Dec'02

    Wireless security

    What's new in the wireless security area.

  • December 09, 2002 09 Dec'02

    College expects wireless LAN to be big man on campus

    California Lutheran University has a fairly small wireless local area network in place for its students, although network administrators expect the number of users to balloon in the next few years.

  • December 02, 2002 02 Dec'02

    Groups aim to tame chaos of wireless LAN security

    Wireless LAN security is a sea of incompatible and proprietary solutions. That may soon change, however.

  • December 02, 2002 02 Dec'02

    Stone says Novell strategy shift is rock solid

    Since his return to Novell Inc. as vice chairman, Office of the CEO, in March after a two-and-a-half-year absence, Chris Stone has been carrying forward his vow to reinvigorate the Provo, Utah-based network products and services company. Recently, ...

  • November 27, 2002 27 Nov'02

    Take the Challenge, set 15

    Take the Challenge, set 14

  • November 26, 2002 26 Nov'02

    Analyst: Cisco will shake up SAN market

    A recent report by the Aberdeen Group found that the storage area network (SAN) market is about to be shaken up by Cisco Systems Inc.'s new multi-protocol approach to switching.

  • November 26, 2002 26 Nov'02

    Brocade weaves road map to intelligent fabrics

    Brocade's recent move to acquire Rhapsody Networks, a maker of intelligent switching platforms, could potentially mark the beginning of a major new stage in the evolution of SANs, according to industry observers.

  • November 21, 2002 21 Nov'02

    Take the Challenge, set 14

    Take the Challenge, set 14

  • November 21, 2002 21 Nov'02

    Integrator drives down phone costs with VoIP

    With offices around the world, computer systems integrator Kanbay Inc. had a monthly phone bill that would put a teen-ager's calling habits to shame.

  • November 19, 2002 19 Nov'02

    How to identify an internet stalker

    Internet stalker/social engineering

  • November 18, 2002 18 Nov'02

    Wireless LANs: Cheap is not synonymous with simple

    New Meta Group research finds that the market for wireless local area networks is growing steadily, thanks in part to the low costs of these systems.

  • November 15, 2002 15 Nov'02

    Analyst sees growing market for voice traffic monitoring tools

    Products that monitor and assess IP networks for voice traffic are likely to become mainstays for medium and large businesses, according to one analyst.

  • November 15, 2002 15 Nov'02

    Quick Takes: Yankee predicts switching consolidation

    In this edition of Quick Takes, new research from The Yankee Group predicts that the network switching market will see consolidation over the next three to five years.

  • November 14, 2002 14 Nov'02

    Localized Net traffic headed to the U.S.

    European Internet traffic is becoming more localized, according to a new study. Probe Research predicts that emerging broadband services are likely to carry this trend to the United States.

  • November 11, 2002 11 Nov'02

    Tool allows Okla. State to curb bandwidth hogs

    Oklahoma State University is using software from Compuware that allows network professionals to monitor the movement of thousands of applications across a network, including popular peer-to-peer file-sharing programs like Kazaa.

  • November 08, 2002 08 Nov'02

    Take the Challenge, part 12

    Take the Challenge, part 12

  • November 06, 2002 06 Nov'02

    English water company patches leaks in wireless system

    Wessex Water is one of three companies honored for ingenuity at the recent Networking Decisions conference. Wessex received an award for its deployment of a new wireless messaging system for remote workers.

  • November 04, 2002 04 Nov'02

    Dominant standard for VoIP yet to emerge

    Eventually, a voice over IP standard will emerge that will allow true interoperability between vendors, according to industry experts.

  • November 01, 2002 01 Nov'02

    Quick Takes: IP PBX launched

    Shoreline Technologies announces a new IP public branch exchange, and 3Com offers a new network jack, in this edition of Quick Takes.

  • November 01, 2002 01 Nov'02

    Take the challenge, part 11

    Take the challenge, part 11

  • October 30, 2002 30 Oct'02

    Illinois Tool Works nails down connectivity solution

    Illinois Tool Works is one of three companies honored for ingenuity at the recent Networking Decisions conference.

  • October 29, 2002 29 Oct'02

    Mobile Cisco router lands with Marine Corps

    The U.S. Marine Corps is incorporating a space-saving mobile router from Cisco Systems into the design of a new amphibious vehicle.

  • October 28, 2002 28 Oct'02

    Voice and video over IP are two peas in a packet

    The popularity of voice over Internet Protocol (VoIP) is expected to grow steadily in the future, but Gartner Inc. researchers say that, for most companies, it will take until 2007 for both voice and data to be fully merged into a single network. ...

  • October 28, 2002 28 Oct'02

    Networking mailbag: Readers discuss Cisco pricing

    Recently, asked readers what they thought about Cisco Systems' much-discussed price hikes this year.

  • October 24, 2002 24 Oct'02

    SanDisk finds secure U.S.-Asia connection in VPN service

    SanDisk, a maker of flash memory, is one of three companies honored for ingenuity at the recent Networking Decisions conference.

  • October 24, 2002 24 Oct'02

    Take the Challenge, part 10

    Take the Challenge, part 10

  • October 23, 2002 23 Oct'02

    Five tips for improving wireless security

    Wireless LANs remain extremely vulnerable to network intruders, according to IT security consultant Jeffrey Posluns.

  • October 22, 2002 22 Oct'02

    Profiles in networking: Puneet Mehta

    A series of occasional profiles on networking professionals who stand out from the pack continues with security systems architect Puneet Mehta, who advises networking professionals to never have a false sense of security.