Monthly Archives: September 2011

Virtual Desktop Infrastructure (VDI) with Ubuntu Linux

Looking to implement Virtual Desktop Infrastructure (VDI) with Ubuntu Linux?

Virtual Desktop Infrastructure with Ubuntu Linux is ideal for anyone concerned about the safety of the VDI-based WAN. It is also ideal for organizations host their applications in the cloud, the use of software-as-a-service through a Web browser. Ubuntu Linux VDI eliminates maintenance of office equipment, and reduces the number of hard disk drives equipment footprint.

Linux Terminal Server Project (LTSP) enables the deployment of centralized virtual desktops over a LAN. Virtual desktop devices (thin clients) are connected to a LAN switch that connects to a server or group of servers that provide a desktop environment and applications.

LTSP is included in Ubuntu 11.04 and earlier versions. The logical choice is the deployment of Ubuntu 10.04, an LTS version. LTS means long-term support, which provides three years of security updates and maintenance.

Low Cost with Ubuntu Linux VDI

With LTSP organizations can recycle old desktop PC (800 MHz, 256 MB RAM) or implement new small footprint and energy efficiency of thin clients. The right size quad-core server can power up to 50 thin clients, providing desktop environments, a relatively low cost. The cost savings are more noticeable in the maintenance and security in recent years. Desktop hardware upgrade cycles between 7 and 10 years, thanks to the absence of turning the hard drive in each unit office. Backups take place only in the server room. Replace the desktop device is as simple as passing and power (unless you are sure customizations).

Better access to remote Windows 2008 with Terminal Services

Terminal Services has been greatly improved in Windows 2008 from Windows 2003, the addition of features for the single sign-on, remote viewing options better, reduce administrative complexity, access to the Web, and Plug-device redirection n-play. These services allow two hosting companies and their customers to more easily control remote services and provide remote users a smoother experience by increasing speed, reducing the need for multiple logins, and provide a screen cleaner.

Remote access from anywhere
Windows 2008 allows users to access standard Windows Best Windows-based programs from anywhere by using RemoteApp and Remote Desktop Connection (RDC). RemoteApp allows users work with applications like asset in person at the remote computer, while maintaining a presence on the computer that has access to the license, you can minimize and maximize the remote control window. RemoteApp reduces complexity and administrative overhead. Offices, hotel employees, support staff, and multi-version application deployments can benefit from this feature.

A better view
Windows 2008 Terminal Services adds support for reporting higher resolution, up to 4096 x 2048, providing support for the poster of the past. It also offers the possibility of using multiple monitors, which covers a multi-monitor screen using a remote connection. Font smoothing is another aspect of the screen better. Windows 2008 supports ClearType, a technology that creates a more seamless experience for the remote user, allowing the fonts appear more clearly, especially on a LCD monitor. Above all, Windows 2008 Terminal Server has priority data visualization, which automatically gives priority to remote users to the screen, keyboard controls and mouse in the other traffic, such as printing and file transfer, that requires bandwidth continues to offer a good user experience.

Cisco CCNA / CCNP Home Lab Tutorial: The 2520 Router

I know from experience that some of the excitement and anxiety of making your own CCNA / CCNP home lab is deciding what to buy! While you can make a viable home lab almost any combination of Cisco routers and switches, some routers are better suited for home lab work than others because they can fill multiple roles.

My favorite is the Cisco 2520. This router has four serial interfaces, making it ideal relay switch. Remember that just because you use a router as a change of image, you can use its routing capabilities. A configuration that I use is the use of three of the four serial ports for switching network framework and point of interface with another quarter-point router. All you need is a DTE / DCE cables and you’re all set.

The 2520 also comes with an Ethernet interface and an ISDN interface, so it gives you even more options. Even if you plan to use ISDN in your home lab right now, you can choose to do so in the future – and with a 2520, you have the router right to do so. Note that if you are going to run ISDN in your home lab, you need an ISDN device such as an ISDN simulator in his laboratory. (ISDN simulators are physical devices and are abundant on eBay – who are not related to “router simulators”.)

The benefits of Integrated Services Digital Network (ISDN)

The advantage of using ISDN to connect to the Internet is much higher compared to using the telephone instead of the old service and Internet service provider (ISP). Dial ISDN, you can almost believe that you are using a broadband connection is also fast. When using an Internet connection with high speed such, a number of additional things you can do with it. Some of the advantages of using ISDN dial-up include:


Multiple digital channels means you can compress all strings and reaching a bandwidth of up to 128 kb / s. This is due to two B channels every 64 kb / s, respectively. With a large bandwidth, allows many things that previously were not available for normal modems, some of these include:

Faster connections, the place, without a number or compromised.
ISDN is also good for gaming due to faster connections.
Video conferencing and streaming takes place without any disturbance.
Videoconferencing can also include multiple recipients.


In the past, you need a phone line for each device used, including telephone service, fax, computer and video conferencing. With the advent of ISDN, everything has changed. Provide other functions such as:

Rackmount Monitor: reduce costs and investment in additional equipment

A display device attached to sturdy metal shelves and are typically used in industrial or commercial environments is known as an exhibitor. This device is mounted on a steel frame chassis and aluminum with regularly spaced holes that bind to the corresponding holes in the steel bars in the rack. This allows the equipment to be attached to the grill. These monitors rack is available in several sizes, such as 1U, 6U, 7U, 8U and 9U LCD, shallow or flat panel LCD display or sunlight readable. The LCD surface depth is 18.9 “deep and is made to adapt to environments smaller than the normal depth rack server.

Operating in the Plug and play, these devices do not require drivers or additional software of this type. Screen sizes Bay widescreen LCD from17 “, 19” and 20 “Samsung LCD and VGA video support, HDMI, DVI-D, composite, S-Video, BNC, HDMI and touch screen (resistive capacitive and infrared). resolutions of 1024×768 up to 1600×1200 range. These units are equipped with a lock-out rails to prevent movement of the keyboard. Some of these devices also have additional safety features as front access locks.

Several models of these devices in a rack to serve different purposes. The quad screen LCD is a perfect choice for monitoring, allowing you to view four video inputs simultaneously one screen. Available in two versions, 4:3 and 16:9 video resolution, this unit has screen sizes ranging from 17 “to 22”. Screens sunlight readable LCD rack are designed so that the video can be seen clearly, even in lighting conditions outside. Compatible with IBM, HP, Dell, Sun Microsystems and others, these devices have a brightness of 1000 cd/m2.