Newsletter Archives


Big Yellow Big Problem For Symantec
A worm discovered by security firm eEye exploits a vulnerability in Symantec's software that unwary administrators may have left unpatched. The potential for exploitation of the problem in the remote management interface for Symantec's AntiVirus and Client Security products could go as far as permitting remote code execution with system privileges.

Date: 2006-12-18


The Evil Packet Sniffer
A "Packet Sniffer" is a utility that sniffs without modifying the network's packets in any way. By comparison, a firewall sees all of a computer's packet traffic as well, but it has the ability to block and drop any packets that its programming dictates. Packet sniffers merely watch, display, and log this traffic.

Date: 2006-12-04


Losing Data Over VPN
Sometimes change is good, sometimes it's bad, and sometimes it's a mixed bag. Such was the case recently when a customer switched a remote office from a 56K line to using a Kerio VPN over Internet connections.

Date: 2006-11-20


ColdFusion And Server Monitoring
Unlocking the CF Server Black Box. How to answer questions about your server. How is it doing? What templates/queries are slow? New tool: CF Server Monitor.

Date: 2006-11-06


ISIS Router Types
To pass the BSCI exam and earn your CCNP, you\´ve got to know ISIS inside and out.

Date: 2006-10-23


Configuring An Access Server
As your CCNA / CCNP home lab expands, an access server such as the Cisco 2509 or 2511 is one of the best investments you can make.

Date: 2006-10-09


Trunking And Trunking Protocols
To earn your CCNA or CCNP certification, you´ve got to understand the basics of trunking. This isn´t just a CCNA topic - you must have an advanced understanding of trunking and etherchannels to pass the BCMSN exam and earn your CCNP as well.

Date: 2006-10-02


OSPF Hub-And-Spoke Details You Must Know!
CCNA exam success depends greatly on knowing the details, and if there´s one protocol that has a lot of details, it´s OSPF!

Date: 2006-09-18


Making The Most Of Cisco's CCNP Program Changes
As you probably know by now, Cisco's making some sweeping changes in their Cisco Certified Network Professional (CCNP) program.

Date: 2006-09-07


Why NAT Traversal Matters To You
Have you ever wanted to connect to your home machine from work -- or vice versa -- but were unable to do so because you were behind a Linksys, NetGear, or Apple router?

Date: 2006-08-23


Sprint To Launch 4G WiMAX Network
Sprint Nextel announced a partnership with Intel, Motorola, and Samsung to develop and deploy the first fourth generation (4G) nationwide broadband mobile network, based on the mobile WiMAX (Worldwide Interoperability for Microwave Access) IEEE 802.16e-2005 technology standard.

Date: 2006-08-14


Official Cisco CCIE Boot Camps
Regarded as the highest level of Cisco certification on the hierarchy of Cisco networking solutions and implementing professional training, CCIE (Cisco Certified Internetwork Expert) certifications are highly desired by IT professionals.

Date: 2006-08-07


Configuring CGMP On Routers & Switches
If a Layer Two switch doesn't have the capabilities to run IGMP Snooping, it will be able to run CGMP - Cisco Group Membership Protocol. CGMP allows the multicast router to work with the Layer Two switch to eliminate unnecessary multicast forwarding.

Date: 2006-07-24


Industry leading management tools for your server
We're a service company that supports you, not just the technology we provide you — your devices, operating systems, data centers and network. It's a distinction that will change the way you do business every day. Our willingness to go above and beyond your expectations makes our SLAs, contracts and promises actually worth something.

Date: 2006-07-17


EIGRP Stuck-In-Active Routes
Passing the BSCI exam and earning your CCNP is all about knowing the details, and when it comes to EIGRP SIA routes, there are plenty of details to know.

Date: 2006-07-10


Frame Relay DLCIs And Mappings
Passing the CCNA is tough, and one of the toughest parts is keeping all the acronyms straight! Frame Relay has plenty of those, and today we´re going to examine what DLCIs do and how they´re mapped on a Cisco router.

Date: 2006-06-26


Switches, QoS, And Cisco's Networking Model
QoS is a big topic on your BCMSN and CCNP exams, and for good reason. As more and more traffic flows through today's networks, accurately applying QoS to both your routers and switches becomes more important.

Date: 2006-06-12


Troubleshooting Directly Connected Serial Interfaces
CCNA exam success depends largely on noticing the details, and this is especially true of configurations involving directly connected serial interfaces.

Date: 2006-06-05


Route Summarization And The OSPF Null Interface
CCNP exam success, particularly on the BSCI exam, demands you understand the details of route summarization.

Date: 2006-05-30


Server Load Balancing (SLB)
When you´re working on your BCMSN exam on your way to CCNP certification, you´ll read at length about how Cisco routers and multilayer switches can work to provide router redundancy - but there´s another helpful service, Server Load Balancing, that does the same for servers.

Date: 2006-05-15


Sun Sees Red, Sues Azul
Sun Microsystem's acquisition of Cobalt Networks in September 2000 has made it back into the headlines, as Sun files a lawsuit against former Cobalt and current Azul CEO Stephen DeWitt over theft of trade secrets and violation of a non-compete agreement.

Date: 2006-05-08


Four solutions to data backup problems
Rackspace knows you grasp the importance of data backup. You don't need to hear doomsday scenarios and scare tactics. You need to hear solutions. And we offer you the solutions and expertise that no other managed hosting provider can.

Date: 2006-04-26


Can't Connect To Internet
We talked about DNS problems at Fallure to resolve, but there are other reasons why a particular machine may be unable to browse the Internet while others on the same lan still can.

Date: 2006-04-24


Who Said That?
My wife and I had run out for errands and had stopped at a D'Angelo sub shop. We were just about to get out of the car when the phone rang. My wife rolled her eyes but I took the call because, well, because that's what I do. Somebody has a problem, I try to answer the phone.

Date: 2006-04-10


BGP Adjacency States
To pass the BSCI exam, earn your CCNP certification, and become an outstanding networker, you´ve got to master the many details of BGP - and trust me, there are a lot of details to master!

Date: 2006-04-03


Static VLANs
BCMSN exam success and earning your CCNP certification requires you to add to your knowledge of VLAN configuration. When you studied for your CCNA exam, you learned how to place ports into a VLAN and what the purpose of VLANs was, but you may not be aware that there are two types of VLAN membership. To pass the BCMSN exam, you must know the details of both types..

Date: 2006-03-20


Keep In Touch (tcp Keepalives Etc.)
You can't please everyone, so you got to please yourself... (Ricky Nelson)

I don't imagine Ricky Nelson was thinking about tcp timeouts and keepalives in the 70's, and probably isn't still, but the subject comes up fairly often for me and never fails to be annoying.


Date: 2006-03-13


Cisco CCNP / BSCI Exam Tutorial: Route Summarization
Preparing to pass the BSCI exam and earn your Cisco CCNP? Route summarization is just one of the many skills you´ll have to master in order to earn your CCNP. Whether it´s RIP version 2, OSPF, or EIGRP, the BSCI exam will demand that you can flawlessly configure route summarization...

Date: 2006-03-06


Secure Routers Go Through Ceiling In 2005
A new study from Infonetics Research reported big numbers for secure routers in 2005. While price pressure drove prices down along with overall revenues, the number of units moved climbed 121%.

Date: 2006-02-22


ENet Neutrality Divides On Party Lines
The potential to future innovators to build on the success of the Internet may well hinge on network neutrality, but the two major political parties in Congress see the issue differently. In a nutshell, or at least in a story appearing on ZDNet, Democrats...

Date: 2006-02-13


Error Detection Vs. Error Recovery
Passing the CCNA, Intro, and ICND exam is all about knowing and noticing the details.

Date: 2006-01-30


What Is Microsoft Terminal Server?
Microsoft Terminal Server is a component of the Windows operating system that allows users to remotely access servers and applications over the internet or a local area network. Terminal Server runs on Windows Server 2003, Windows 2000 Server and Windows NT 4 Terminal Server. Client devices connecting to a Terminal Server can...

Date: 2006-01-09


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