Computer Networking & Hardware: linux

Showing posts with label linux. Show all posts

Tuesday, 14 October 2014

How to Set Up a Virtual Private Network with Windows

Imagine you are on business overseas working to secure a new account with an offshore supplier. This is a big meeting for you and your company. If you clinch the deal, you are in line for a big promotion. The morning of the presentation, you turn on your laptop and discover your hard drive has crashed. Panicking, you call your office to request an electronic copy of your presentation, but because of the time difference, your call goes unanswered.

However, if you knew how to set up a virtual private network (VPN), you could access the file from any computer in the world! A VPN allows you to connect to a computer from anywhere in the world and access the files.

Steps:

1. Open your web browser and go to www.whatismyip.com. Write down the IP address. You will need it to configure the client.

2. Click the Start button and click Run.

3. Type control and hit Enter.

4. Click Network and Internet Connections.

5. Click Network Connections.

6. Click Create a New Connection, which is the first option on the left toolbar.

7. The New Connection Wizard will open. Click Next.

8. Choose Set up an advanced connection, the last element on the list. ClickNext.

9. Choose Accept incoming connections. Click Next.

10. You will see the Devices for Incoming Connections screen. Do not select anything on this screen. Click Next.

11. Select Allow virtual private connections. Click Next.

12. Select to whom you want to give access. Click Next. If a user is not listed, you will have to add an account. See “Related Wikihows” for more information.

13. Do not change anything on the Networking Software screen. Click Next.

That’s it! Your computer is now set up to allow for VPNs. Click Finish to complete the wizard.

Now you can enjoy the free VPN services.

Hack your Android Phone: Find custom ROMs, apps, and OTA updates with GooManager

By Unknown 02:55 No comments:

GooManager is a ROM managing app (not dissimilar to ROM Manager) which connects your device to the goo.im server. This server hosts a variety of custom ROMs and Gapps (Google Apps) updates.
The app works in collaboration with TWRP (TeamWin Recovery Project). TWRP is a recovery MOD which runs in a similar way to ClockworkMod. If you have already rooted your device you will have most likely done this by installed ClockworkMod onto your device. Simply put GooManager works at the front end of your device, helping you to download different ROMs as well as Gapps updates and ROM OTA (over the air) updates.
OTA updates help reduce the size of update files, making updating a ROM much faster. TWRP is then used to flash these ROMs onto your device, as well as offering backup and recovery services, just like the Clockwork Recovery MOD.
To start exploring GooManger and accessing its variety of custom ROMS you will need to have rooted your device. Browsing for ROMs in GooManager is limited to the ROMS which have been uploaded to the GooManager server, but you can also download ROMs manually onto your device that aren’t on their server, and locate them in your storage through GooManager, flashing them through the app.
Follow these steps to get acquainted with your rooted device’s new best friend when it comes to flashing ROMs and updates.

Install GooManager app
Depending on what ROM you are running you may have GooManager installed already. If this is the case you will find it in your apps. If not visit the Play Store and search for GooManager, download and install it. Open the app and grant the request for SuperUser permissions.
Install Open Recovery Script
Tap the menu icon/ button on your device. Tap Install OpenRecoveryScript. GooManager will take you to the appropriate TWRP file. Download it and it will be automatically installed. To access TWRP recovery tap Reboot into Recovery where you can backup, wipe, restore your system and install ROM’s manually.
Manual Open Recovery Script installation
If GooManager can’t find an OpenRecoveryScript for your device, you will have to install TWRP manually. Visit www.teamw.in to locate the file you need for your device, download it. Repeat the same process you did when rooting your phone, but use the .tar file you just downloaded instead.
Browsing GooManager ROMs
In GooManager tap Browse Compatible ROMs. Tap and ROM to look at its latest versions. Select a version to be taken to a download page. Tap Begin Download, downloading it to your device. After download in the GooManager menu tap Flash ROMs to access all downloaded ROMs.
Download Gapps package
From the GooManager main menu tap Download Gapps Packages. Confirm that you want to download the latest Gapps. You will be taken to a page which will begin the download automatically. Review the download in the status window. Once complete in the GooManager main menu tap Flash ROMs.
Installing ROMs and Gapps
In the Flash ROMs menu check the ROM you would like to install. Tap Order & Flash selected. In the next window check Create backup to backup your device’s current firmware, you should also do a full backup of your devise data before continuing. Tap OK then tap Flash.
Running your new ROM
If the ROM sticks on the Boot screen. Switch off your device, hold down the volume UP, Power and Home button all at once, entering TWRP recovery. Restore the backup you made. Once your device reboots repeat step 5, this time checking Wipe cache/ dalvik cache partition and Wipe Data.
Installing a ROM from zip
To add a manually downloaded ROM from your internal storage or SD card in the Flash ROM menu tap Add zip from another location. Find the folder a ROM has been downloaded. Tap the ROM to add it to your list of flashable ROMs in Goo Manager.
Updating Gapps and ROMs
Tap Check for updates. Goo Manager will present you with any avalible ROM or Gapps updates. Tap on an available update to download it. Goo Manager works with OTA updates, meaning you only have to download the updated parts of a ROM, not an entirely new version of that ROM.
Setup update frequency
Tap the Menu icon/ button. Tap Settings. Tap Rom update check frequency. Select how often you want GooManager to check for updates. This can help avoid constant updates of the very latest versions of a ROM. Set update check frequency to Never if you prefer to check for updates manually.

Hack your Android Phone: Increase your Battery Life

By Unknown 02:47 No comments:

Overclock your phone

If you want to eek out every last bit of power from your phone then you need to overclock it. Overclocking is the act of telling the processor to run at a faster speed than it was initially intended to and you can often gain 10%-15% extra speed without any problems. Download and install SetCPU from the Play Store. Under the Main settings you’ll see the maximum and minimum possible speeds (you will need to be running a ROM that supports overclocking). Just move the sliders to your desired speeds and tick the Set on Boot option. Use small steps at first to find the setting that is best for your needs.

Get longer battery life

The latest breed of dual and quad core processors in our Android phones do a good job of power management but you can squeeze a little more power out of your phone’s battery by taking the multi-core management into your own hands. CPU Sleeper Dual Core and CPU Sleeper Quad Core are two apps that shut down the extra cores when the device is in standby mode and they aren’t needed. Some processors will handle this by default, so your results may vary.

Force Chrome into desktop mode

Chrome is a fantastic browser but it has one serious limitation – there’s no global setting to force the app to always download the desktop version of a website. On a tablet such as the Nexus 7 this is especially annoying. There is a simple fix: create a blank file called chrome-command-line (make sure there’s no file extension) and drop it into the /data/local/ folder. Then use ES File Explorer with root access turned on to change the permissions of that file (tap and hold on the file and select Details) to RWE RE RE. A quick restart will finish the job.

Remove bloatware

Almost all Android phones come with a boatload of additional apps installed, some that you use, and usually plenty that you don’t. If your phone is rooted you can blitz those unwanted apps. Get the Titanium Backup app from the Play Store, view your full list of apps and identify the ones you want to remove. By tapping and holding on the app name you can choose to Freeze the app – this prevents it from running and removes it from the app drawer – or to uninstall it. Freezing is the best first step, if only to ensure there are no adverse side effects. Note that if you choose to freeze or remove the launcher, such as TouchWiz on a Samsung phone, you will need to have another launcher installed, or your phone won’t boot. To be on the safe side make sure you’ve got a Nandroid backup to roll back to.

Speed up boot time

When you turn on your phone many handsets will scan the system for new media content that has been added. It speeds up your access to that media but slows down the boot process. The app Rescan Media ROOT prevents media from being scanned at boot, which in turn enables your phone to start up quicker. You need to be rooted for it to work, and remember that your media apps will have to scan for new content when you open them.

Hack your Android Phone: 10 best tricks for your android phone

By Unknown 02:44 No comments:

Android is the Linux based operating system designed primarily for touch screen mobile phones. Now a days android phones are so much popular that they covered almost 65% of total mobile phones market.They are rich in functionality as well as user friendly. Many android users don’t know much about the hidden features of android phones. Today we are sharing an article which will tell you the best secret android tricks and hidden features of android phones. Different versions of android versions support different set of android tricks, so try all the following android tricks. I am not sure which will going to work on your handset.

1) Force reboot:
Many times android users face a problem of freezing of mobile phone, In case your android phone is frozen, you can reboot it using an android trick.

Just press Power Button+ Home Key + Volume up button simultaneously.

2) Quick Google Access:
Android phones built primarily for internet, many of android users don’t know that android phones provide a way by which we can access Google search in just a single click. To use this android trick,

Press menu key and hold it for couple of seconds, it will launch the Google search.

3) Reboot Android in safe mode:
As like computers, we can also reboot android phones in safe mode. The latest android jelly bean version provides an option to reboot in safe mode, if something goes wrong.
To reboot your android in safe mode, follow the below given instructions.

*Long press the power button
*Long press on the power off option.

Android phone will show a confirmation message about rebooting it in safe mode, if we reboot android phone in safe mode then all the 3rd party application will be disabled. These applications can again be enabled when we reboot our phone normally. This is a great android utility in case when, one of your 3rd party application is causing trouble for you and you want to hunt it.

4) Unlock android phones by face detection:
This is a cool android trick by which you can unlock your phone by using face detection, In the jelly bean version, android provides a way by which android phone can be unlock using face detection, to make this feature more secure, jelly bean version added another layer of protection in which android phone can be unlocked only when the face is matched as well as we have to blink eyes in order to unlock phone. Blinking eyes tells the android security system that person is live and it’s not an illegal attempt of unlocking using a still image.
To activate this,

Go to Settings > Security > Screen lock > Face unlock.

5) Get detailed information about phone status:
We can get the detailed statistics like phone information, battery information, usage statistics and WiFi information by just dialing *#*#4636#*#*

This is a handy USSD to get the details about battery usage, DNS check, Ping, Application time usage time and so on.

6) Move android apps to SD card:
Its good idea to install android apps in SD card, but what if you installed apps on your phone memory. Don’t worry android phones provide a way by which we can move our apps to SD card. To move apps to SD card, follow these steps:

Go to settings > Application settings > Manage application > Select the application, You will see the option “Move to SD card”.

7) Hard Reset and Factory reset your android phone:
This android trick comes handy at the time of selling an android phone. Android phone can be formatted in two ways

Factory reset
Hard reset

a) Factory reset: In factory reset, your phone is being formatted to factory level. Means all the settings will go by default and all the internal data will be deleted. To factory reset a phone dial *#*#7780#*#*.

b) Hard reset: To hard reset a phone dial *2767*3855#, this will delete all the data (including internal and External SD data) as well as settings of android phone. Don’t try this code for testing purpose, until you are not sure. It will not ask for a confirmation.

8) Context menu in android:
long press on the screen, will show you additional options for customizing android phones. This context menu is somewhat similar to the right click menu of most operating systems.

9) Taking screen shots on android phone:
Android phones offer a great feature by which we can take the screen shot without using any 3rd party application. However the screen shot android tricks vary from one android version to another version.

Press the Home button + power button (This trick work on most android phones.)
For Galaxy Nexus: Power button + volume down button.
For Galaxy Note 2 and S3: Swipe your palm on the screen to take screen shot.

10) Android Version Animation:
This is another cool android trick to play with your android phone.
To use this android trick, Go to settings > about phone > Tab repeatedly on ‘Android version’.
After sometime, the android version will be animated.

Bluetooth Wireless Technology

By Unknown 02:00 No comments:

Bluetooth wireless technology (IEEE 802.15.1) is a short-range communications technology originally intended to replace the cables connecting portable and/or fixed devices while maintaining high levels of security. The key features of Bluetooth technology are threefold: robustness, low power, and low cost. Bluetooth has been designed in a uniform way. This way it enables a wide range of devices to connect and communicate with each other by using the Bluetooth wireless communication protocol. The Bluetooth technology has achieved global acceptance in such a way that any Bluetooth-enabled electronic device, almost everywhere in the world, is able to connect to other Bluetooth-enabled devices in its proximity. Bluetooth-enabled electronic devices connect and communicate wirelessly through short-range, ad hoc networks known as piconets. Each device can simultaneously communicate with up to seven other devices within a single piconet. Each device can also belong to several piconets simultaneously. Piconets are established dynamically and automatically as Bluetooth-enabled devices enter and leave radio proximity. One of the main strengths of the Bluetooth wireless technology is the ability to handle data and voice transmissions simultaneously. This enables users to use a hands-free headset for voice calls, printing, fax capabilities, synchronizing PDA’s, laptops, and mobile phone applications to name a few.
An important aspect of this thesis is about the scalability of Bluetooth broadcasting. Since scalability can sometimes be a rather vague concept, we give a short explanation of the term. An important aspect of software products is how they are able to cope with growth. For example, how does the system handle an increase in users or data traffic? This property of a software system is usually referred to as scalability. A more detailed specification of the concept is given by André Bondi, who defines it as follows: ‘Scalability is a desirable attribute of a network, system, or process. The concept connotes the ability of a system to accommodate an increasing number of elements or objects, to process growing volumes of work gracefully, and/or to be susceptible to enlargement.’ Whenever a system meets these requirements we can say that thesystem scales. In this thesis scalability comes down to the question if the system is capable of dealing with large groups of users equipped with Bluetooth enabled devices capable of receiving simple text messages.

Passive Broadcasting

The first type of business deals with broadcasting from a central location, which we will call passive broadcasting. Most of these companies sell both the hardware and software to enable this. For example, BlueCasting by Filter WorldWide, one of the major players in the market which made the news in August 2005 when they distributed merchandise for the British pop band Coldplay, offers a product family divided into four types of systems. They offer solutions for small retail shops, one-off events such as music festivals, and even larger areas such as airports and train stations. The latest descendant in the family is a system that provides an interactive touchscreen allowing users to interact directly with the system. BlueCasting is an example of a product that comes with both hardware (one or more BlueCast Servers) and software (BlueCast Campaign Management System) which is used to provide remote setup, maintenance and reporting.
Besides this type of companies, i.e. the ones that are selling the total package, other companies have dedicated themselves to providing just the hardware. An example is BlueGiga. According to their website their BlueGiga Access Servers are used by more than 350 Bluetooth Marketing companies in more than 65 countries. They sell two lines of products: Bluetooth Modules and Bluetooth Access Servers. The modules are described as ‘completely integrated, certified, high-performance Radio Frequency products including all needed Bluetooth profiles’. Access Servers are sold in the form of Access Points (up to 7 connections) and Access Servers (up to 21 connections). Besides this they also sell the BlueGiga Solution Manager (BSM). This is a web-based remote management and monitoring platform for BlueGiga Access Servers that can be used to simultaneously upgrade, monitor and configure a large number of BlueGiga Access Servers, instead of configuring each device one-by-one.

Bluetooth Core System Architecture :

The transceiver operates in the globally unlicensed ISM band at 2.4 GHz. The bit rateis 1 Megabit per second and can be boosted to 2 or 3 Mb/s with Enhanced Data Rate[EDR]. The 79 channels in the band are ordered from channel number 0-78 and arespaced 1 MHz beginning at 2402 GHz. Bluetooth-enabled devices that arecommunicating share a radio channel and are synchronized to a common clock andfrequency hopping pattern. Frequency hopping is used to make the protocol morerobust to interference from other devices operating in the same band. The physicalchannel is sub-divided into time units known as slots. Data is transmitted betweenBluetooth-enabled devices in packets. These packets are situated in the slots. Packetscan fill one or more consecutive slots, allowing larger data chunks to be transmitted ifthe circumstances admit this. Bluetooth is primarily designed for low power consumption and affordability and hasa relatively short range (1, 10 or 100 meters). It makes use of low-cost transceivermicrochips that are embedded in each device.

The Bluetooth Baseband is the part of the Bluetooth system that specifies or implements the medium access and physical layer procedures between Bluetooth devices. Several devices can be joined together in what is called a piconet. One device owns the clock and the frequency hopping pattern and is called the master. Two or more piconets can be joined in what is called a scatternet. To form a scatternet, some units, called gateways, belong to different piconets. Such a unit can be a slave unit in more than one piconet but can act as a master in only one. Besides this, it can transmit and receive data in only one piconet at a time. To visualize this, imagine the following. You are on the phone with a friend, using your Bluetooth headset, while at the same time you are uploading pictures from your computer to your phone. Your phone now acts as a gateway, being the master in the piconet with your headset and slave in the one with your computer.

Top 10 Web Hosting Companies in India

By Unknown 10:26 No comments:

Most of the buisness whther a small sacle buisness or a large firm or group of Industries is going online these days thorugh websites. It has always been a question that where should i host my website to get the best available service on the net.

Here, I am giving a Complete list of top 10 web hosting providers in India which are reliable and trusted by many customers across the World.

	Web Space Unlimited Email Accounts Unlimited MySQL Databases Unlimited Free Domain Name Free Website Builder tool Anytime Money Back Guarantee $100 Free Google Adwords Credit	99.9%	iPage Reviews	$20.14 per year
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6	Web Space Unlimited Email Accounts Unlimited MySQL Databases Unlimited Free Domain Name Free Website Builder tools 30 days Money Back Guarantee FTP Users & SubUsers	99.9%	FatCow Reviews	$3.15 per month
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8	Disk Space 10000 MB MYSQL(DB & Space) 50 Email addresses 50 Free Website Builder 30 Days Money Back Guarantee.	99.9%	HostCats Review	Rs. 91.58 per month
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10	Web Space 1 GB Data transfer 5GB MYSQL(DB ) 1 Unlimited Email addresses FREE Website Builder tool.	98.9%	eWebGuru Review	Rs. 107.91 per month