Sponsored White Papers, Webcasts, and Downloads
ZDNet Dictionary Definition
- Concentrator
- A device that combines several communications channels into one. It is often used to tie multiple terminals together into one line. It differs from a multiplexor, which also...
- Full Concentrator Definition >>
ZDNet Resources
- Images: Supersize solar power
- Utility-scale solar power plants--using everything from giant reflective dishes to plastic balloons--are changing the look of solar power.Parabolic troughs, one of which is shown here, have been around for 25 years, and the technology will be around for at least another 25. Parabolic troughs reflect sunlight to heat liquid carried...
- Tags: Electricity, Solar Energy, Trough, Photovoltaics, Plant, mW, Solar Power Plant, Arizona Public Service, BrightSource Energy, Concentrator, Stirling Engine Systems, Infinia, It', SolFocus, What', Manufacturing, Telecom & Utilities, CNET News.com
- Image galleries 2008-05-26
- Start-up bags funding for solar concentrators
- Start-up bags funding for solar concentratorsSimply outstanding.I wish them all the best in their efforts.StupidYou'd think the scientists at Parc would know better. At an incidence of 1 kilowatt per square meter optimum there simply isn't enough solar radiation impacting the surface of the planet to support an industrialized society.Physics...
- Tags: kW, concentrator
- Discussion threads 2006-07-25
Additional Resources
- High-tech trifecta dabbles in solar technology
- What is it with high-tech giants and solar energy research and development? Apparently, as it turns out, many of the same manufacturing and design ideas that people have been applying to computer systems and microprocessor technology matter in the world of solar. Intel is the third huge...
- Tags: Solar Energy, Transistor, Photovoltaics, Microprocessor, Technology, IBM Corp., Manufacturing, Semiconductors, Hardware, Heather Clancy
- Blog posts 2008-06-16
- Photos: Where the building is the network
- The San Jose, Calif., headquarters of Echelon, maker of technologies for smart buildings, model the company's energy management systems.Behind the scenes of "smart" buildings, including the Louvre Museum in Paris and the Sears Tower in Chicago, lies technology from Echelon. The company doesn''t call its embedded control technologies "green,"...
- Tags: Network, Echelon, Photograph, Building, It', Echelon', That', Networking, CNET News.com
- Image galleries 2008-05-14
- Performance of Environments Using DB2 Connect Enterprise Edition
- DB2 Connect Enterprise Edition V9.1 for Linux on zSeries (DB2 Connect) connects LAN-based systems and their applications to the company's mainframe host DB2 databases. Additionally, DB2 Connect can be used in a three tier environment and can act as a gateway concentrating large numbers of SQL connections from various clients...
- Tags: Performance, Environment, IBM DB2, Databases, Enterprise Software, Software, Data Management
- White papers 2008-02-01
- SND - Securing Cisco Network Devices
- View Available Dates and LocationsIn this 5-day, entry-level network security course, you'll learn basic concepts such as network security policies, network attack methods, and threat mitigation techniques, along with the Cisco security product portfolio. You will examine the most important security technologies, including hardening Cisco IOS ...
- Tags: Cisco IOS, Network, Network Device, Cisco Systems Inc., Network Attack, Security, Networking
- Training 2008-01-01
- Microsoft hacker summit tackles security veil of virtualization
- The Fall edition of Microsoft's Blue Hat hacker summit will kick off next week with a heavy focus on piercing the security veil of virtualization and process isolation. At Blue Hat v6, scheduled for September 27-28 in Redmond, external security researchers and internal Microsoft software engineers...
- Tags: Microsoft Corp., Virtualization, Storage Management, Utility Computing, Rootkits, Hardware, Storage, Security, Spyware, Adware & Malware, Ryan Naraine
- Blog posts 2007-09-21
- Podcast: 'Google Gears' vies to be de facto tech for offline Web apps
- Podcast: 'Google Gears' vies to be de facto tech for offline Web appsThis is truely a historic moment. We will finally be getting a standard wayto do off-line web applications. It will be great to have all of my contacts and old emails available off-line for gmail, though I would...
- Tags: Podcasts, OPEN SOURCE, Databases, Google Inc., Google Gears, podcast, Web
- Discussion threads 2007-05-30
- Why VPN can't replace Wi-Fi security
- Why VPN can't replace Wi-Fi securityYou mean people who say VPN is the only way to go?You mean people who say VPN is the only way to go? Ah they're extremely common. In fact they're probably the ones that voted this blog down.I was about to mention EAP-TLS,...
- Tags: VPNs, Wireless LANs, Wireless security, Network security, password, VPN, Wi-Fi, security, VPN IS, Wi-Fi security
- Discussion threads 2007-05-12
- Solar cell breaks efficiency record
- Solar cell breaks efficiency recordBreak even at $1 per watt would be 3 yearsToday, I pay 11 cents per kilowatt-hour from Xcel Energy. At $1 per watt, a solar panel rated at 1000 watts would cost $1000. It would take 9000 hours of use to break even. ...
- Tags: Solar Cell
- Discussion threads 2006-12-07
- 10 common Cisco VPN problems and how to resolve them
- Cisco offers many ways to handle VPN connectivity, making troubleshooting and problem-solving a little tricky. From VPN capabilities included in some routers to the VPN services offered by PIX firewalls to the Cisco VPN Concentrator, each has its own quirks. IT pro Scott Lowe put together this set of...
- Tags: Cisco Systems Inc., VPNs, Network Security, Telecommunications, Networking, Security
- Download resources 2006-11-17
- Working With Cisco VPN Concentrator
- The VPN Concentrator is used for Remote Access VPN's. In typical use, a Remote Access VPN allows users to use an encrypted tunnel to securely access a corporate or other network via the Internet. Different VPN Concentrator VPNC models are used for different numbers of users and amounts of throughput....
- Tags: Cisco Systems Inc., Chesapeake NetCraftsmen, VPN Concentrator, VPNs, Remote Access, Network Security, Telecommunications, Networking, Security
- White papers 2006-08-07
- Master the most common deployments of IPsec VPNs
- This sample chapter from IPsec Virtual Private Network Fundamentals reviews several common deployments of IPsec VPNs. First, the chapter discusses several prevalent IPsec VPN topologies: Site-to-site IPsec VPNs Site-to-site IPsec+GRE VPNs Hub-and-spoke IPsec VPN topologies Remote access VPN topologies ...
- Tags: Topology, IPSec VPN, IPSec, VPNs, Network Security, Networking, Security
- Book chapters 2006-07-25
- Cisco Security Advisory: Cisco VPN 3000 Concentrator Vulnerable to Crafted HTTP Attack
- The Cisco VPN 3000 series concentrators are a family of purpose-built, remote access Virtual Private Network VPN platforms for data encryption and authentication. A malicious user may be able to send crafted packets to a concentrator which may cause the device to halt and/or drop user connections. The power must...
- Tags: Security, Cisco VPN 3000 Concentrator, HTTP, Cisco Systems Inc., Attack
- White papers 2006-04-26
- Configure VPN 3000 concentrators to accept PPTP, L2TP/IPsec, and WebVPN remote access sessions
- This sample chapter, taken from The Complete Cisco VPN Configuration Guide, focuses on the configuration of the concentrator to support certain types of remote access VPN implementations. Learn how to configure remote access sessions: PPTP, L2TP/IPsec, and WebVPN.This sample chapter, taken from The Complete Cisco VPN Configuration...
- Tags: Cisco VPN 3000 Concentrator, PPTP, Cisco Systems Inc., Remote Access Session, Remote Access, VPNs, Telecommunications, Networking
- Book chapters 2006-02-06
- Are you ready for avian flu?
- Recently there's been a lot of talk about the possibility of a pandemic flu and its affects. Most of the discussion has centered on what the Feds can do. President Bush has called for $7B to prepare and my old boss, Mike Leavitt, has been on the...
- Tags: pandemic, business continuity, business continuity planning
- Blog posts 2005-11-08
- If Sun won't use web-based Office, who will?
- If Sun won't use web-based Office, who will?PanicPanicing a little aren't you? Google and Sun just announced a deal–do you see Microsoft as so impotent they need this rush to rescue? I haven't heard so many "nevers" or "absolutely nots" since IBM talked about the threat of the PC to...
- Tags: StarOffice, Channel management, E-mail, AEP, Microsoft Office, Web, Sun Microsystems Inc., Web browser
- Discussion threads 2005-10-05
- Construction firm extolls virtues of Dell's blades
- Over the last year, one of ZDNet's more loyal readers has been keeping in touch with me, letting me know what he thinks of the various products, services, and companies we cover on ZDNet. He asked not to be identified other than by his title -- general manager of...
- Tags: blade
- Blog posts 2005-07-12
- Cisco unveils new triple play in security appliances
- At Interop 2005, Cisco unveiled their new all-in-one ASA 5500 series security appliance. The new 1U rack mount appliance integrates the best of the Cisco PIX firewall, VPN 3000 series concentrator, and Cisco IDS/IPS intrusion detection and prevention appliance in to a single box at approximately the same price...
- Tags: VPN 3000 Series, PIX, Cisco Systems Inc., ASA 5500 Series
- Blog posts 2005-05-04
- Configuring Two Cisco VPN 5000 Series Concentrators to Establish an IPSec LAN?to?LAN Tunnel Routing IPX
- This paper gives an overview of the configuration required to establish an IPSec LAN-to-LAN tunnel routing Internetwork Packet Exchange IPX between two Cisco VPN 5000 Series Concentrators. For information about how to establish basic connectivity, or for a reference on configuration syntax, refer to the VPN 5000 Concentrator documentation. IPX...
- Tags: IPX, Cisco Systems Inc., IPSec, Networking
- White papers 2005-01-19
- << Previous
- page 1 of 1
- Next >>
White Papers and Webcasts