Archive for March, 2009

Cool Netbooks – Racing Ahead of Laptops

Monday, March 30th, 2009

The unusual rise of interest of consumers towards netbooks have caused their sales flying like anything. All because of global market slump, the sales of desktops and laptops have dived to some new lows, thus the ever-growing sales of netbooks seem to give a much needed boost and balance to computing appliances industry.

Netbooks, termed by many as mini notebooks, have made latest inroads into the schoolbags and backpacks of students. Interestingly, they prefer it to their heavy notebooks(don’t mistake them as laptops). Thus the parents have no option but to buy their children a netbook instead of heavy desktops or bigger laptops. Even the parents seem to learn a lesson from their offspring. It might be the first time in history when parents are trying to fill in their children’s shoes. They are denying themselves conventional computers for their professional use and making a beeline to grab a beautiful and easy-to-carry netbook.

Though these netbooks are not as efficient as a conventional desktop or a laptop, remember they comprise very few features, buying something at a price less than half of a desktop is not a risky deal. After all it can cater to the all basic necessities successfully.

However, the crazy success story of netbooks was hardly remarkable when it was launched. The customers had shut their doors completely to those primary netbooks. After all, who likes to operate a crap with a screen measuring only 7 inches? Though they were required to pay around $300 only.

Thus the manufacturers, learning from the previous mistakes, have flooded the stores with netbooks with a screen bigger by two to three inches. Even the price is not going to burn some holes in your pockets. You need to pay not more than $400. One thing more! Unlike the very previous models, the new products can run the versions of Windows.

Statistically, it has left behind not only the desktops and laptops, the much hyped Apple’s iPhones are distant runner up. DisplaySearch, a market survey agency, reported that sales of netbooks grew by 160% at the end of third quarter. More clearly, 5.6 million netbooks were sold, in that period, as compared to the sale of 4.7 million iPhones.

Getting Going With Cisco Router Simulators

Friday, March 27th, 2009

For anyone who has ever needed to test a new network architecture, implement a new routing protocol or simply study for a Cisco exam has needed access to a real live router or a router simulator. But buying a bunch of routers just test up an idea or for study is expensive. And until recently good fully functional router simulators we just something we could only dream about.

Some company’s, like Boson have router simulators you could buy to help you study for the CCNA but it was extremely limited with limited functionality. There was also some open source software like dynmips and the hypervisor engine that could be used to simulate a router but these applications were really difficult to configure and only support limited models.

Well now there is GNS3 – a multi-platform Graphical Network Simulator. GNS3 builds on dynamips and dynagen to create a nice graphical front end for building complex Cisco networks. I was completely amazed at how easy it was to install and build a new network, configure routers and switches and have a nice simulated network up and running.

GNS3 is a free open source router emulation software application developed in Python and uses the PyQT libraries for creating the UI. It uses standard vector graphics similar to Visio to create the network digrams and layouts. GNS3 uses real Cisco IOS for creating fully function emulated routers and switches.

GNS3 supports many types of interface configurations (pretty much if its in the IOS its supported). Frame Relay, Frame Relays Switches, ATM, Ethernet, OSPF, EIGRP, BGP, and more.

The only draw back that I can say so far with GNS3 is that you need a pretty hefty machine to simulate a large network. Especially if you are trying to build it on a Windows machine. I havent tried but I have heard that running GNS3 on linux is much more manageable.

Another application that has similar functionality is Cisco’s Packet Tracer. Thought originally designed as a group learning tools for Cisco Academy students, it make for a nice router simulator. And because its build for Cisco Academy, the only place to get it is if your enrolled in Cisco Academy. Another problem with Packet Tracer is it only runs on Windows. It’s a bit more limited than GNS3, as it comes preconfigured with set models of routers and switches. It is very stable and less resource intensive than GNS3 by a long shot and will do the trick when you need to test out a quick config. To find Packet Tracer is pretty easy if you look out on the bit torrents, you should easily be able to find it.

So if your looking for a cool router simulator and have been frustrated thinking they dont exist. Think again! Here are two really cool simulators right here!

7 Ways to Speed Up Windows Vista

Tuesday, March 24th, 2009

There are many ways to speed up Windows Vista. Some methods are more straight forward than the other and some will help you see huge improvements to the performance of Windows while others offer less noticeable results. Here we will look at 7 most effective ways to speed up Windows Vista from my personal experience.

Turn off unnecessary Windows features.

By default, Vista comes with tons of features that are enabled based on assumptions which may or may not apply to you. Hence you get a system that is running lots of background processes, most of which you do not need at all. So one of the great ways to speed up Windows Vista is to disable them. To see the list of Windows features and turn them on or off, go to Control Panel, change to “Classic View”, click on “Program Features” and then select “Turn Windows Features On And Off”. Some examples of features you may want to disable are:

- Remote Differential Compression

- Windows Meeting Space

- Tablet PC optional components

- And so on.

Graphical features.

One of the better ways to speed up Windows Vista is to turn off fanciful graphical features if you are not too much into aesthetics. One example is the Aero feature. Open your start menu, go to run, and type in ’systempropertiesperformance’. At the Visual Effects tab, uncheck ‘Animate windows when minimizing and maximizing’. This will do the job. There are many graphical features that you can take out from here. This can give you more immediate results as compared to other ways to speed up Windows Vista.

Turn off Windows Indexing.

The Windows Indexing service was initially designed to be one of the ways to speed up Windows Vista by shortening the search time for files. However, as the volume of hard disk increases exponentially, the service has proven to be a resource intensive program causing massive slowdowns when Windows start to index the millions of files in the system. Select Start then choose Computer, right click on your C Drive and select properties. Under the General Tab, uncheck “Index this drive for faster searching”. On the next dialog box, choose “Include subfolders and files”. Do the same for the other Drives.

Remove Spyware and Trojans and protect your system against future attacks.

Out of the many ways to speed up Windows Vista, this has to be one of the most crucial things you need to do. This is because not only your system performance is at stake, the security and confidentiality of your data is too. Use free tools such as Avast for anti-virus protection, Spybot for spyware removal and protection as well as Zonealarm for firewall protection. There are other good tools around but make sure they are not spywares themselves!

Remove unnecessary start up programs.

When Vista boots up, many programs run at the start up either in the background or as pop up Windows. Many of these you do not need. You need to take control and eliminate these memory suckers that are lurking in the background. Open your start menu, go to run, and type in ‘msconfig’, choose the Startup tab and uncheck any items that you do not want to auto-load and click OK.

Defrag your hard disk.

This may not be new to you but if you are thinking of using the Windows Defragmentation Tool in Vista, you can forget about it. Instead, use a free 3rd party tool known as Defraggler (Google it for the download link). It is still quite effective in comparison to other ways to speed up Windows Vista.

Clean your registry.

One of the often neglected portions of Windows is the registry itself. Many do not realized that one of the best ways to speed up Windows Vista is to make sure the registry is clear of invalid entries that causes Windows to perform unnecessary tasks. Cleaning the registry has other advantages too. In certain cases you can remove Windows errors that pop up during boot up.

Virtual Private Network

Saturday, March 21st, 2009

The word ‘Technology’ has it’s origins from Greek. Technology is a result of science and engineering. It is the manner adopted by humans to improve their surroundings.

One of the method involved is – making use of tools and machines to carry out tasks efficiently. With time we have observed rapid growth and change in technology like PCS, podcasts, teleconferencing, videoconferencing, electronic teaching centers, etc. One amongst the several technologies is the Virtual Private Network.

A VPN is a private network that uses a public network like the internet to connect remote sites and users. A VPN uses “virtual” connections routed through the internet from the company’s private network to the remote site or employee.

A public network like the internet can help carry VPN traffic based on certain standard protocols. A Service Level Agreement (SLA) between the VPN customer and the VPN service provider is drawn in order to enable the existence of a service providers private network.

Advantages of a VPN:

* Improved security and productivity

* Simplified network topology

* Reduced operational and transportation costs

* Faster Return on Investment

* Extensive connectivity across the globe

Features:

* Reliable

* Secure

* Scalable

* Network and policy management

Types of VPN:

1. Remote Access VPN

2. Intranet VPN

3. Extranet VPN

1. Remote Access VPN:

Remote access VPN is a user-to-LAN (Local Area Network) connection used by an organization whose employees need to connect to the private network from remote locations.

The remote access VPN helps save on costs over toll free expenditure and is secure (encrypted tunnels across a public network like the internet), scalable

2. Intranet VPN (Interconnecting corporate sites):

The intranet VPN helps in cost saving over dedicated, leased lines. There exist tunneled connections and encryption that enables reliable throughput.

3. Extranet VPN (connecting corporate site(s) to external business partners or suppliers)

Extranet VPN extends WAN (Wide Area Network) to business partners.

VPN Security:

The most important part of a VPN solution is security. A VPN helps putting private data on public networks and this raises concerns about threats to that data and the impact of data loss. A Virtual Private Network must provide security services in area of Authentication.

Authentication ensures that a user or system is who the user claims to be. Security is thus ensured.

Authentication Mechanisms:

* login name, password, PIN (password – specified number of digits followed by 8 bits that constantly changes at regular intervals)

* a computer readable token like a smart card

* fingerprint, retinal or iris pattern

Tunneling:

Tunneling is a very important part of a VPN. Tunneling involves placing a packet within another packet and sending it over a network. The network (like the internet) over which the packet is sent and the *tunnel interface understand the protocol of the outer packet.

Protocols used in Tunneling:

* Carrier protocol – The protocol used by the network that the information is traveling over

* Encapsulating protocol – The protocol (GRE, *IPSec, L2F, PPTP, L2TP) that is wrapped around the original data

* Passenger protocol – The original data (IPX, NetBeui, IP) being carried

Example: A packet that uses a protocol not supported on the internet like NetBeui can be placed inside an IP packet and can be sent safely over the internet.

Considering the current business scenario/trend that involves increased commuting/telecommuting and widely spread global operations, with employees who need to connect to central resources from remote sites in order to communicate with each other, technologies like the VPN prove to be very handy and vital.

*Tunnel Interface: The two points where the packet enters and exits the network.

*IPsec is the security portion of the IP standard that is supported by the Client. IPsec performs packet-by-packet authentication and end-to-end encryption. In addition, IPsec supports the IP within IP encapsulation for network address translation.

Computer Services For Your Laptop

Wednesday, March 18th, 2009

Computer users in Nashville and surrounding areas are no different from the rest of PC users in the United States. More people are currently using laptops, a shift from the traditional desktop computers, which have for some time dominated the market. It is not surprising that most Nashville computer repair shops are specializing on repairing and maintaining different types and brands of laptops. Many other computer services are being offered to cover the needs and requirements for the portable computers.

Whatever kind of laptop you may have, name it; computer services providers surely would be able to accommodate them. Whether you have a tablet PC, a notebook or a miniature laptop, you can easily find repair shops that could give solutions to operational and system problems.

These days, modern laptops have become more affordable and cheaper compared to conventional desktops. People also like the portability and convenience of laptops. Now, you can always carry with you your computer no matter where you go. Getting online anywhere is not a problem anymore with the emergence of Wi-Fi and other portable Internet access modes. Because of this, laptops have become the top choice for most first-time computer buyers. Users are also raving about the fashion sense and the energy saving features of such portable PCs.

The problem with laptop is that because it can be easily carried wherever the owner could go, the computer is almost always subjected to intense situations. For instance, a laptop could incur physical damage when it is hit by a hard object during travels or soaked wet due to unexpected torrential rains. It could also accumulate too much unnecessary moisture due to the humid environment condition and could break apart because of accidents. People also tend to spill beverages into the laptop keyboards, while other laptops easily crash down due to extreme and over usage.

Nashville computer repair shops offer specific and specialized computer services for laptops. Now, it is not hard to have a defective laptop repaired and checked up regardless of its model, system and brand. Computer repair sites in the city usually cater to popular brands like Dell, Acer, HP, Sony, IBM/ Lenovo, Toshiba, Fujitsu and Apple. The shops are also able to track down damaged and replaceable parts necessary for the repair.

How will such computer services work for your problematic laptop? It is as easy and as fast as bringing the machine to the nearest computer services shop to you. Prior to any repair or maintenance task, you will be given a rough estimate of how much the repair could cost, entirely based on the forecast expenses from replacement of damaged parts. The repair could only get on upon your approval. Once fixed, you can pick up the laptop or it could be delivered to your doorstep. Home services for laptops are also facilitated by some Nashville computer repair operators.

Acer 5920 Laptops

Sunday, March 15th, 2009

Would you believe if we told you that the Acer Aspire 5920 is designed by an expert team of designers and engineers from BMW Design works – the team that has the honor of designing some of the most gorgeous looking cars? Well you would, only once you have seen the Acer Aspire 5920 in flesh.

The smart looking laptop has a shiny black silhouette with a milky cream finish inside. For some, the contrast does a pretty good job. What’s different? The Acer Aspire 5920 has a car handle like screen lifting system which also works as the webcam. So there it goes, car designers will remain car designers, and when they design anything else, they will design it like cars. But there’s no harm in that … or there is??

There’s not where the car-inspired design stops. As you open the screen you find that the laptop resembles (or lest tries to resemble) the center console of a BMW car. The ‘center console’ has short cut keys on the sides with a blank button there (whatever it was intended for!).

Key features

The Acer Aspire 5920 is a power packed system that has virtually all you would want in a laptop. The laptop has the nex-gen Centrino Duo with a 2GHz Intel T5300 CPU and a gregarious 2GB of RAM. Acer Aspire 5920 has an in-built Intel Turbo Memory of 512MB, which enhances the processing speed and males the system respond faster.

The Acer Aspire 5920 primarily positioned as the multimedia laptop comes accompanied with a ‘Dolby Home Theater’ and ‘Virtual Surround Sound’. The sub-woofer provides the extra bass. The Acer Aspire 5920 can be connected to external speakers as well making the . ound system of the laptop superb.

To enrich your multi-media experience, the Acer Aspire 5920 has a 15.4 inch screen. The wide screen is perfect for watching movies or even playing games. For the ultimate gaming experience Nvidia GeForce 8600GT graphics card would be a value-add. Acer Aspire 5920 comes preinstalled with Windows Vista Ultimate edition OS and a DVD rewriter.

Extra with the Acer Aspire 5290 come in the name of an Express Card slot, a memory card reader that supports most popular formats, Wi-Fi (including 300Mbps 802.11n support), infrared and an integrated Crystal Eye webcam. The software extras come-in pretty handy with Acer Empowering Technology (Acer eNet, ePower, ePresentation, eLock, eRecovery, eSettings Management), and trial versions of Norton Internet Security, NTI CD-Maker and Cyber Link Power Producer.

How to Secure Your Computer

Thursday, March 12th, 2009

This article is about how to protect your computer and the problems which people usually face related to the security and privacy threats in general. Our personal computers are the major targets for hackers and spywares, who just wants to know what we have stored in our PCs

They want to sneak into our systems and try to steal our credit card numbers, bank accounts information or any thing which they find is useful for them so that they could use that information illegally and take advantage from our above mentioned information

For some people money is every thing to them but there are another type of people or you can say a group of people who are getting paid to hack into others system and get information which they think is important for their interest or their country’s, I hope some of the readers may got my point what I wanted to say.

For some intruders money is not important, they just want to intrude in to your system and use your hard disk space or your internet connection so they can hack into other machines because they know the more computers they use the harder its gets for the law agencies to get them nor they can be prosecuted easily.

Some Useful Tips To Secure Your Computer:

Just for an instance, imagine that if you want to secure your house, how you would make it secure that no thief, robber or safecracker may enter your house, for this purpose you would first secure your door with a chain lock then will lock the windows and before going to sleep you run a security check to make sure that your house is locked and secure completely.

Now apply the same theory to your computer, you lock your computer windows with a password, then to secure your system you install different security applications like anti-viruses, anti hacking and spyware, malware and data encryption to enhance the security level on your personal computer, there are bunch of softwares to do this task for you by simply doing a research on Google to find the best one.

Data Center Design and Revision – Do Your “Level” Best

Monday, March 9th, 2009

When you are design or revising your data center structure, there is a lot to consider. You must decide how much processing power and storage you need to begin with, and ensure that the solution’s scalability guarantees that you will never outgrow it. You will have the processing power, the storage area and the throughput that you need to get your work done, in the present and in the future, if you pay attention to the details up front.

Whether you do the work yourself or contract it out, there is a great deal of high-tech expertise involved. It is important that you stay current on the technology and the procedures, as they are constantly changing. Nothing stays the same except change, so be prepared to review your data center operations at least monthly.

Level 3: Concurrent Maintainability

According to The Uptime Institute, which developed the tiered classification approach to site infrastructure and established a common benchmarking standard, a Level 1 data center is susceptible to disruption from both planned and unplanned activity. This is because there is just a single path for power and cooling, without redundant components.

Level 2 facilities with redundant components are somewhat less susceptible to such disruptions, with their raised floors, UPS devices (Uninterruptible Power Supply) and generators. But there is still a single-wired distribution path throughout, meaning that maintenance of the critical power path and other parts of the site infrastructure will require a system shutdown.

Level 3 facilities allow planned site infrastructure activities without interrupting computer hardware operation; this is called concurrent maintainability. There must be enough capacity to simultaneously carry the load on one path while testing or repairing the other. In this way, preventive maintenance, component repair/replacement and system tests can be performed without a service interruption. According to The Uptime Institute, Level 3 facilities provide upwards of 99.982% availability.

Constant Monitoring
A reputable vendor can ensure that your company’s unique needs are fully met with a uniquely customized and dedicated server environment. The best firms monitor their servers 24/7 and upgrade them as necessary to prevent over-utilization or over-loading. Full server administration is provided, at no additional charge, by many of these top firms, and most are not afraid to give you a “maximum uptime guarantee” – just ask for details and you will even get in writing.

There are no shortcuts and you cannot afford to compromise. There are any number of firms whose people, products and services are first-rate, and the industry (and its equipment) is in a constant state of development and improvement. There are many, many vendors that continue to push the technology envelope to serve you and your company better, faster, more cost-effectively and with guaranteed security.

A scalable solution, one that is constantly monitored and continuously refined, is the goal for your data center. Doing your due diligence up front so as to ensure the selection of a trusted, capable vendor is extremely important. Reviewing your situation on a regular basis is also crucial. Don’t ever sign on to anything you don’t understand, so if you need some high-tech advice, get it from a trusted source before beginning any negotiations with service companies.

Computer Maintenance – Tips to Keep Your Computer Running at Peak Performance

Friday, March 6th, 2009

We perform routine maintenance on many of the high-tech items we have purchased. But for most people, performing general maintenance on their computer is one of those things that gets pushed way down on the to do list. However, computer maintenance helps to increase system performance and prolongs system life and in most cases can be done automatically.

General maintenance involves caring for our computer’s hardware and software. Here are some tips to creating a good basic maintenance plan.

1. Microsoft Updates Microsoft routinely releases updates to its operating systems (Windows XP, Vista and other Microsoft programs). These updates are available the 2nd Tuesday of each month and can be downloaded and installed either manually or automatically. On most versions of Microsoft’s operating system the user has the option to set the Automatic Update program to download all available updates and install them at a specified time. This is generally the best selection because it insures that all critical updates are installed with minimum user interaction.

2. Virus, Trojan, Spyware and Firewall Protection Viruses, Trojans, worms and other spyware are everywhere on the Internet and by being proactive, using anti-virus software, you can generally eliminate the threat of system compromise caused by system vulnerability. There are many good products available such as Norton Anti Virus, McAfee and Trend Micro and each is capable of providing comprehensive protection. Also, each can be set to automatically update and perform periodic system scans providing real time protection.

3. Disk Defragmenter A disk defragmenter helps you increase system performance and reclaim lost speed by re-arranging files on the computer hard drive in such a manner that the operating system can find them more quickly. Although most versions of Windows come with a free disk defragmenting program there are other utilities available that can perform more advance defragmenting functionality such as Diskeeper, Perfect Disk, etc. The key once again is to set the defragmenter to periodically perform the defragmentation process.

As you can see a regular computer maintenance plan is something we can easily perform. It can result in increased system performance and life.

Computer Services Business Lead Qualification Tips

Tuesday, March 3rd, 2009

If you own or manage a computer services business, you may be wondering about how you can consistently find high-quality clients that build relationships and provide ongoing services revenue.

Many IT companies struggle to establish the right criteria to secure great client accounts. When you fail to have a consistent process for qualifying your leads, you will find yourself scrambling to get good clients and working way harder than you need in order to stabilize your computer services business. The following 4 lead qualification criteria can help you find more great clients all the time.

Proximity. A potential client for your computer services business needs to be geographically close to you. In most areas, this means within a 30-60-minute drive from your location. Proximity has an impact on the types of networking events you attend and everything else you do from a marketing perspective. Proximity will also be an important benefit to stress as you are building a long-term support contract plan. This way, you can build long-term relationships with your ongoing clients.

Size. Make sure with your computer services business that you are targeting potential clients with 10-50 PC’s … those that we call Sweet Spot Clients(TM). Basically, prospects have to be big enough that they need a real server. Typically, this level of investment is required once a small business reaches somewhere between 10-100 employees. You can also measure size in annual revenue. A good prospect for you will have $1 – 10 million in annual sales. Know all the details of prospect size because that information will help you with your marketing efforts, particularly when you plan direct mail campaigns.

Existing IT Assets. Most of the time your computer services business prospects will have their own e-mail domain. You will want to address how their users retrieve and send e-mails when meeting with them, because it’s going to be an important way to qualify them as good candidates for your services. Many times prospects will have a dedicated server, which will indicate that they have more serious IT needs and probably would be receptive to the solutions you offer.

Platform Match. If your expertise is in Microsoft Windows, will you be able to adequately and profitably support a potential client’s largely Mac-focused environment? As part of your lead qualification process, be sure to ask about predominant OS/NOS platform investments to make sure that you’re not embarking on an unsupportable-platform wild-good-chase. Or at the minimum, make sure you have a competent contractor or partner that can help to bridge any of your own company’s skills gaps.