Software Defined Networking - The Next Big Thing

The computer industry has seen a lot of innovation. It all began with the upgrading of internet download and upload speeds to download huge amounts of data. Then came the possibility to store mammoth amounts of data remotely. Thus cloud computing was born. Finally the iPv6 transition came giving rise to a number of URL’s good enough for every individual on this earth. With the introduction of 6LoWPAN, this kind of connectivity has been made possible on a variety of wireless devices also. To deal with these problems and other such troubles a few corporate giants put their hands together to form what is called the Open Networking Foundation. The aim of this foundation is to create a virtualized Software Defined Networking (SDN) computer architecture reliable enough to tackle such kind of networking troubles among other problems.

Software Defined Networking

Software Defined Networking (SDN) is an emerging computer networking architecture that has recently emerged. Networked routers and switches are used to handle huge volumes of data. In such routers and switches SDN separates the control plane and the data plane.

How SDN Works

While using SDN the control plane is incorporated in the commodity network equipment while the data plane is incorporated in the commodity network equipment. While using SDN, one can expect super fast optimization of switches. SDN allows for the external sources to access innards of switches and routers packed with huge volumes of data. Because of the ability of SDN to achieve this and more, a majority of computer experts regard SDN as the next big thing in the industry.

Different Variants of SDN

The various SDN models have been discussed are

Floodless and flood-based

With the flood-based SDN model a huge amount of global information is achieved by using popular broadcasting and multicasting techniques. This makes the SDN model more symmetric. Identity learning and global awareness is achieved through flood-based SDN. The disadvantage of using this kind of model is scalability. With the addition of new locations, the load for every location goes up thus bringing down scalability. Depending on distributed hashing and distributed caching of the SDN tables, forwarding in this kind of model is successfully achieved.

Host-based and network-centric

The host-based model also goes by the name ‘assumption model’. An assumption related to the usage of Software Defined Network in the various data-centers is being made. It is because of this assumption that the HyperVisor performs the encapsulation process. This is done in support of the various local machines that are being used to facilitate elasticity.

The network-centric approach clearly distinguishes the end points and network edge. There is a relationship between Software Defined Networking edge, outside host endpoints and access of Top of Rack device. This kind of SDN variant is being counted as one of the best and the traditional methods of networking. One of the advantages of using this kind of SDN is that it does not depend on any end points to carry out routing activity.

Symmetric and asymmetric

The asymmetric model makes sure that global information is centralized to the maximum limit. The more centralized the information is, much easier does it gets to achieve global consolidation. This in turn results in the accessible distribution of SDN traffic. Even in the symmetric distributed model, great effort is made to enhance global information distribution.

These are the most commonly used SDN models.

SDN can be used in any application, enterprise or carrier. They can also be used in a private cloud. However, one of the key areas where SDN is used is carrier support.

The post above is guest article by Christy Haywood who writes for offers.telcoservicesgroup.net, a website known for savings and current hot information on at&t u-verse reviews, besides att.com services.

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Protect Eyes From Computer Screen Damage

Our eyes are not meant for gazing constantly at a fixed screen. To protect your optics from stress, first be sure that you monitor’s contrast and elevation are decently aligned. When you have done that, seek these few leads to maintain your eyes fit:

1. Be sure there's clear distance ahead of your seating place or monitor. It is not good to operate from behind a wall. Space ahead insures you can pass time looking at remote targets while you work to limit close focus.

2. Place the screen at flop tilts to the source of external illumination.

3. Rub the orbit around your eyeballs, particularly the one above the eyeballs, in good order under the brows.

4. Schedule your study activities to have extra actions that don't require gazing on the screen.

5. Try to avoid work during the dark, when the exclusive light in the way arrives from your computer. It exhausts the eyes as it causes them center in an exclusive direction.

6. Hold a watching length from 25 to 28 inches, depending upon the sizing of the text and the restrictions of the workstation.

7. The elevation of the monitor should be somewhat deeper than eye stage so the watcher is facing down at a tilt of around 15 degrees.

8. Set the font size of presentation text threefold the smallest size you are able to catch on the monitor.

9. Set the computer's contrast thickening to modify the brightness level of the screen, which will besides abbreviate blaze.

10. Buy a cozy chair in which you will be able to relax your muscles and tumble around a bit.

11. Apply panels to freeze the vividness of light, thereby cutting glare.

12. Try and feature adept physical shape as it will burn the floor of cholesterol, therefore making eye drive much lighter.

13. Close your eyes and move eyeballs in the right, up, left, down directions. Hold your eyes unopened and repeat this step few more times.

14. One formula to gift your eyes a crack is to front aside from the computer to a level at least twenty feet aside for at least 30 seconds.

15. Close your eyes at any rate once a hr. for almost 30 seconds.

16. Wrap up your monitor with an anti-glare shield.

17. If you put on contacts, don’t use them while you are practicing computer work. Eyes run dry quickly when they are bearing contacts, so try applying your spectacles.

18. Take 3-4 min breaks for every 30-40 minutes of work on the computer as you work. View remote physical objects during these breaks.

19. Don’t wear shiny dresses which might cause a blaze by making a reflection on the screen.

20. Set the blaze level. Detecting and eradicating the origins of blaze, such as windows and bright walls near the personal computer.

21. Fold your eyes, at times. Consume some time and lie, with your eyes closed.

22. Retain a bottle of “rewetting drops” adjacent to your desk for those daylights when your workload is extreme. Contact wearers apply them to wash their optics while contacts run dry.

23. Just look on the screen when you've to. Don't gaze on the screen as a computer program carries a time of day to set up or check as your browser acquires time to open a dumb internet site. Claim that chance to assure your optics by looking outside through the windowpane or precisely off the screen.

24. Do not forget to twinkle as this is among the most significant points to maintain your eyes in good condition.

25. Line up your screen igniting and luminosity to make certain you experience comfy gazing at it.

26. As you sense weariness, close your eyes steadfastly and open them rapidly. This drill will deliver an improved effect if you will do it at the daybreak.

The entire effect on eye troubles follows from stressing eyes. Relaxation of your eyeballs is a primal factor to a fine sightedness and eye wellness.

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Computer Sound Recording: Free Tools n Tips

It is very east to record audio using your computer, and there are a lots of tools out there that can help you in this. For making a quality digital recording tools like USB turntables or USB microphones can help a lot, but you can also create great audios without using any of these. Most people who jump in this field to start professional audio recording face a lot of troubles because of lack of basic know how of working with audios using computers.

All you need for creating good sound recording is a fine microphone or for recording from device you will just need a mini-jack. If you are interested in starting audio recording using your computer then here are a few basic things that will help you start computer audio recording professionally. These tips will not produce a pro multi-track digital recording studio, but will surely set the road map and starting point for newbies.

Firstly have a look at your computing machine and check what sort of sound interfaces it includes. On the rear of desktop personal computer, the sound-card includes various ports like stereophonic line input, microphone input, and a stereo line output. It likewise has USB interfaces where you can attach a USB mike or an external audio card.

The next measure is to stage a taping mike this actually depends on what you're recording. If you're just recording something of less importance with computer that does not demand to be of high quality or in stereophonic format, utilizing a tacky mike will be OK. If the mike already includes a USB output, then this can provide good results.

But for master recording like recording music from something like a cassette deck or CD player you will have to employ the stereo system line input and a mini-jack cable that bears the correct link on the, in this case mike won’t work. For taping from a sound device, you'll need a cable with mini-jacks on both ends, on other hand recording from cassette deck, will need RCA jacks cable.

But if you want to go step ahead and want to work like musician or podcaster for producing high-quality sound and instrument recordings, you'll prefer to catch a USB mike or a pro-audio external sound card. For high quality results you will have to take care of a lot of things for example mike input on your computer should not absorb mechanical noise from your computer and you should also adjust environment as mikes are often formed to catch sounds from all across your room.

The next step is choosing the taping input root on your computing device. You will have to open the control panel and choose Sounds and Audio Devices from the list of options. When you are in the sound control board, you'll be able to choose your computer's sound input and output and set the intensity for each device.

Finally, you will need a software system. I advocate checking Audacity. It's a free Mac and PC sound recording equipment. Audacity is easy to use and you can record good audios using this software. Its interface is also easy. When your recording is accomplished, you can export it to a format like WAV. From there, you can burn it to a CD, convert it to MP3, or shift it to your iPod.

External Resources:
Audacity Software (Free Download)

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How To Protect Computer From Viruses And Other Threats

A computer virus is any program designed to damage data stored on computer or network. It can damage documents, photographs, applications or operation of the computer. Here are few tips that will help you protect yourself from viruses and other threats.

1. Apply virtualization programs these are software systems that produces a virtual environment to forbid any wildcat installments on your system. When you close your system, all unauthorized changes of the session are annihilated. But if you use virtual environment then you will have to allow or deny for each file or program setting change. However if safety is your dominant interest, then there is no more protected method than using a virtualization computer program such as Returnil.

2. No anti-virus computer program is 100% operational; therefore use more than one anti-virus as it gives a finer possibility of detection of computer virus. Use your second Anti-Malware computer program to scan system nearly once weekly.

3. Download and set up software patches or additional programs that will assist you wipe out computer virus. Or follow whatever commands you discover on erasing the computer virus manually.

4. Configure your browsers to disable ActiveX, Java, and Javascript. This way you will lose some functionality, but you will protect your computer from catching a virus and additionally this will help you speed up browsing.

5. Applying an updated anti-virus platform, run all fresh apps for viruses prior to setting up them on your disc drive. Even software from leading publishers has been found to carry viruses.

6. Whenever your system catches a computer virus, see your virus-scan package maker’s site and put in any virus updates that are accessible. And then run the software. The software system might not be capable to erase the virus, but it will be capable to distinguish it.

7. Do not reuse disks that have been in infected computers, do not download data files from risky sites, and do not open email attachments unless you need them. Check with anti-virus all messages and attachments, even if they are form folks you recognize, especially messages with undefined subject and contents, such as 'Check this' or 'See these flicks!!!'

8. Update the computer virus database in your anti-virus computer program on a regular basis.

9. Use special attention when you get attachments that end in .exe, .com, .xls or .ppt. Never open attachments that end in .vbs or .js, as mostly you will never hold a cause to open these files.

10. After detection and removal of virus run additional computer anti-virus scans to make certain that the computer virus was administered the right way.

11. Use antivirus program to check additional share disks, download data files from the Internet and email attachments.

12. Explore the internet for data concerning your particular computer virus by typing the name of the computer virus for example, 'Melissa virus' etc.

13. Acknowledge that the only way a computer virus circularizes is either by setting up a contaminated file or by booting a dirty disk. You cannot catch a computer virus by just being online or by registering e-mail. You've to download and set up an infected file before it will circulate. Therefore, don't launch any uninvited executable files mailed via email.

14. Do not let your browser to automatically execute programs, specified MS Word or additional programs by its email program. Configure your web browser to set in motion WordPad or Notepad alternatively.

External Resources
Microsoft Tips

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Free Image Watermarking Tools

Water marking is a really valuable tool for hiding out texts and figures. The veiling of these images is commonly used for copyrights purposes. These watermarks are very faintly obvious and the figures are imprinted on the paper which cannot be well seen in blur light. Nowadays this technology is widely applied in nearly all intelligence and certificate publishings as a standard of their publications and genuine documents. We surveyed and accumulated a list of seven finest FREE Image Watermarking tools.

Alamoon

Alamoon Watermark tool

Alamoon is among the finest FREE Image Watermarking Tools . It has acquired an extra features of cropping and resizing the figures which we manually watermark. This unequaled software supports many different forms of pics their diverse sizes. This package doesnot necessarily care about the type of the image. It just processes it.

Easy Sector

Easy Sector Watermark Tool

This unbelievable costless watermarking package has a lot of advance watermarking features such as adding up dates stamp to our watermarks, add logotypes, text-comments. We can as well add advanced vivid marks and logos in our pics. Also all types of photographs are well acceptable.

Kigo Soft

Kigo Watermark Tool

Kigosoft is another unequalled picture converting software package with the chief characteristic of fast picture watermarking. Its main characteristics also include Thumbnail maker. The user interface is comprehensive and comfortable to use. It supports all pic formats.

Star Watermark

Star Watermark for Mac

This is a really valuable software package tool employed for watermarking. It's available for all editions of the operating systems of macintosh and Windows. Star Watermark is really comfortable to use and useable for texts watermarking besides picture watermarking. Also, when the picture watermarking is demanded, Star Watermark is well-matched with every types of pics such as PNG, JPEG etc.

uMark

uMark Watermark Tool

uMark is a very amazing watermarking tool around. Yet the free edition of uMark doesn't allow several features but still it allows an effective environment for watermarking photos.

Watermark Image

Watermark Image Tool

A different FREE watermarking software package which is precise at ease to use. We can watermark pictures, photographs according to our demands, whether we need to watermark the logos or styles etc. This FREE software system is useable in multiple languages like English, Italian, French, Nipponese, Germanic, Taiwanese, Russian and Bahasa Indonesia etc.

Watermark Lib

Watermark Lib Free Tool

Another fantastic watermarking software system is Watermark Lib which is widely useable free of charge. The watermarks can additional be made in Batches which is a really unequaled characteristic. Furthermore, we can likewise add date stamp and clock time in our watermarks by utilizing the Watermark Lib.

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Use God Mode: Understand Windows

Are you ready for an unexpected Windows trick “God Mode”!

To enter "GodMode," make a new folder on your desktop. And rename this folder to:

GodMode.{ED7BA470-8E54-465E-825C-99712043E01C}

You are able to alter the “GodMode” text, but the tailing period and encrypt number are of the essence.

The folder picture will modify double click it to demo the GodMode window:

Bing!!!!!!! Welcome To GOD MODE.

You will be asking what is this? Actually God Mode is a undivided home to do anything from managing devices to changing appearance of your computer from one place. The term God Mode is formulated by the Microsoft development squad, which puts up an exclusive place to approach all Windows settings without requiring to graze selections and folders in Control Panel. The window displays nearly 50 subdivisions with ready connections to configuration options and OS control board from a single folder.

Warning!
This magic operates in Windows 7 and 32 bit Vista, but it can crash 64-bit Vista. If you're not able to erase god mode reboot in secure mode or practice command line.

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Professional Screen Recording: Screencasting Tips And Tools

Recording Screen Activity

Screencast is a digital video recording of computer screen's visual output. This is generally done to show working of a software or for producing tutorials. Background sounds and some notes or text transcripts can also be added to aid viewers. Here I will mention all the tips and stuff you need for perfect and possessional screencasting.

BEST SCREEN RECORDING SOFTWARE:
Choosing a perfect screen recording software is very critical. Here are few options, choose the one most appropriate for your task:

1. Microsoft Expression Encoder: Basically this tool is for developers to encode video files for internet with Silverlight. But in addition this has got easy to use great video screen capture application. This app is very easy to use and provides qualities like 15ftp, 30ftp and even 60ftp. Which makes it suitable for recording video games and Google Earth. Another great feature of this tool is that you can show yourself in as small window with in video if you have a cam. It also allow timing and logo branding features.
2. Jing is another great alternative tool for screencasting.
3. BB Flashback: BlueBerry's BB Flashback is another great freeware. You can also record webcam with this tool.
4. Screenr: If you want to record an online webpage then you can use screenr without installing anything (java required).
5. WeGame client: Best free choice if you are gonna record Google Earth or some video game.
6. Fraps: Best for game recording if you are ready to spent some bucks.
7. Procaster: For online live stream recording. (join.me a good alternate of Procaster)

TIPS FOR BEST SCREEN RECORDING

• One of most important thing to do for perfect screen recording is choosing a modest and decent wallpaper or background image. And hide unnecessary icons from desktop. Believe me it matters a lot.
• If you are going to record sound using microphone the switch off all noise generating devices like fan, mobile phones etc. Also try to keep microphone away from CPU as much you can.
• Make sure to turn off all running apps and pop ups like messenger etc. which can interrupt recording process. I recommend use of SmartClose for shutting down running programs.
• If you are intending to record activity of a single window,then keep the size of that particular window equal to size of area being recorded. You can use tools like Sizer to precisely fix the size of particular window.
• But if your project is gonna cover more than one windows then you may want to try softwares like Win Size 2 and Project Window.
• Audio matters a lot, record video first and add background audio later. Use good quality Mic for recording audio. I recommend Audacity for audio recording. 
• If you are interested in mixing background music with audio then you can get free legal music from sites like Sound Cloud, Free Music Archive and Archive.org.
• Once your video is ready you can propagate it the way you want. If you want to upload it to internet then I recommend Youtube and iTunes (for iTunes you will need host like blip.tv).

Follow all these tips and you will surely get a professional recording.

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Tracking Stolen or Lost Laptops And Phones

Prey is a free and open source software used to track stolen or lost laptops and mobile phones.  This application automatically detects mobile phone or laptop location  using internet and sends information to software server. Registered users of Prey can login and see this information.  Only the owners of a device at an earlier stage can access the present location of device and once the location is identified one can go to authorities and share the information and help them find lost device.

Prey software offers a lot of useful features to users.  Prey uses GPS for Geolocation.  This application has Wi-fi autoconnect which connects automatically to a wi-fi hotspot and transmits location if other internet connections are not available.

Another interesting feature of this software is that it can use the camera of laptop to take the picture of person using laptop.  And you know how this picture can help as an evidence against theft.

This software can even lock your stolen device completely then your device will only be accessibly with a password. And if you want to show the thief that he is being tracked, you can trigger alarm remotely and you can even show warning message.

Prey is available for systems like Windows, Linux, Android, and Mac.  Free version can be used for three devices at most. For more informations and Download link check preyproject.com.

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Complete List of Useful Run Commands For Windows 7 And Vista

Windows 7 Logo

Here is a complete list of RUN commands which work in Windows 7 and Vista. Go to START > RUN tool to use these commands. Some of these commands may not work because of absence of corresponding application from your system.

FUNCTIONS	Run Command CODE
Opens MSN Messenger if installed	msnmsgr
Opens Accessibility Options	control access.cpl
Opens Add Hardware Wizard	hdwwiz.cpl
Opens Add or Remove Programs	appwiz.cpl
Add / Remove Program - Add New Programs Preselected	control appwiz.cpl,,1
Add/Remove Programs with Set Program	control appwiz.cpl,,3
Opens Administrative Tools	control admintools
Opens Adobe ImageReady	imageready
Opens Adobe Photoshop	photoshop
Opens Calculator Utility	calc
Opens Certificate Manager	certmgr.msc
Opens Character Map	charmap
For Command Prompt	cmd
Opens system Component Services	dcomcnfg
For system Management	compmgmt.msc
Opens Control Panel	control
ForvDate and Time Properties	timedate.cpl
Opens Device Manager	devmgmt.msc
Opens Direct X Troubleshooter	dxdiag
Opens Disk Cleanup Utility	cleanmgr
Disk Management	diskmgmt.msc
Opens Partition Manager	diskpart
Opens Properties	control desktop
Opens Properties	desk.cpl
Display Properties	control color
Opens Driver Verifier	verifier
Opens DVD Player	dvdplay
Opens Event Viewer	eventvwr.msc
File-Signature-Verification Tool	sigverif
Files/Settings Transfer Tool	migwiz
Opens Firefox	firefox
Opens Fonts Folder	fonts
Fonts options	control fonts
Game Controllers	joy.cpl
Iexpress	iexpress
Iexpress Wizard	iexpress
Opens Internet Explorer	iexplore
Internet Properties	inetcpl.cpl
Java Web	javaws
Keyboard Properties tool	control keyboard
Logs Out Of Windows	logoff
Opens Microsoft Access	msaccess
Opens Microsoft Excel	excel
Opens Microsoft Frontpage	frontpg
Opens Microsoft Movie Maker	moviemk
Opens Paint	mspaint
Opens Microsoft Powerpoint only if installed	powerpnt
Opens Microsoft Word	winword
For Mouse Properties	main.cpl
Mouse Properties	control mouse
Opens Nero (if installed)	nero
Opens Network Connections	control netconnections
Opens Network Connections	ncpa.cpl
Opens Notepad	notepad
For ODBC	odbcad32
Opens On Screen Keyboard	osk
Opens Outlook Express	msimn
Opens Paint	pbrush
Opens Phone and Modem Options	telephon.cpl
Opens Phone Dialer	dialer
System Power Configuration	powercfg.cpl
Printers and Faxes control	control printers
Opens Private Character Editor Tool	eudcedit
Quicktime Media Player	quicktimeplayer
Quicktime	QuickTime.cpl
Real Player (if installed)	realplay
Opens Regional Settings	intl.cpl
Opens Registry Editor	regedit
Opens Registry Editor	regedt32
Performance Monitor	perfmon.msc
Remote Access Phonebook	rasphone
Remote Desktop Tool	mstsc
Scheduled Tasks Wizard	control schedtasks
System Services	services.msc
Shared Creation Wizard	shrpubw
Shared Folders	fsmgmt.msc
Shuts Down System	shutdown
Opens Sounds and Audio Properties	mmsys.cpl
For SQL Client Configuration	cliconfg
Syncronization Center	mobsync
For Syncronization Tools	mobsync
Opens Configuration Editor	sysedit
Opens Configuration Utility	msconfig
Opens System Information	msinfo32
Opens System Properties	sysdm.cpl
Opens WindowsTask Manager	taskmgr
For Telnet Client	telnet
Opens Tweak UI (if installed)	tweakui
Opens Utility Manager	utilman
Opens Windows Address Book	wab
Opens Windows Address Book Utility	wabmig
Opens Windows explorer	explorer
Windows Firewall	firewall.cpl
Opens Windows Magnifier	magnify
For Management Infrastructure	wmimgmt.msc
Opens Media Player	wmplayer
Windows Picture Import Wizard	wiaacmgr
Opens Windows Security	wscui.cpl
Opens Windows System Security Tool	syskey
See Windows Version	winver
Opens Wordpad	write
Troubleshoot  Adapter	AdapterTroubleshooter
Advanced User Accounts	Netplwiz
Manage Authorization	azman.msc
Restored User Names and Passwords	credwiz
Backup Status and Utility	sdclt
Color Management	colorcpl
Computer Management Snapin Launcher	CompMgmtLauncher
Disk Defragmenter	dfrgui
Ditilizer Calibration Tool	tabcal
DPI Scaling	dpiscaling
Driver Package Installer	dpinst
Firewall Control Panel	FirewallControlPanel
Firewall Settings	FirewallSettings
iSCSI Initiator	iscsicpl
Language Pack Installer	lpksetup
Diagnostic Tool	msdt
Problem Reports	wercon
Remote Assistance	msra
Windows Activation	slui
Sound Recorder	soundrecorder
Sound Volume	sndvol
System Properties	SystemPropertiesAdvanced
Computer Name	SystemPropertiesComputerName
Data Execution Prevention	SystemPropertiesDataExecutionPrevention
Hardware options	SystemPropertiesHardware
Performance options	SystemPropertiesPerformance
Protection options	SystemPropertiesProtection
System Properties Remote options	SystemPropertiesRemote
Trusted Platform Module	TpmInit
System Features	optionalfeatures
Windows Firewall	wf.msc
Windows Image Acquisition	wiaacmgr
For Mobile PC	mblctr
Update Application	wuapp
Update Standalone Installer	wusa

Also see Run Commands For Windows XP

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