Sunday, July 31, 2011

Wi-fi has been become an essential thing in the personal computers and brand new smartphones. It provides us very useful services in the purpose to access the internet and to network computers each other.At schools,internet cafes,and in just a bus stop too we can distinguish Wi-Fi signal from lots of other signals.
     One "DSL Modem" and the "Access Point" is the main parts of the wireless networks. and these access points are known as wireless hot-spots. we have to install wireless network interface card to use Wi-Fi Technology. And in laptops this card is installed when during the manufacturing. But in desktops we have to add extra card to use the wireless internet service.
     But as same as the internet services we can also find some problems with the WiFi connectivity. such as hacking and privacy breaking and more. But through some steps we can preserve the safety and reliability of our Wi-Fi Connection.


Give Your Wi-Fi Network A Different Username

          All wireless routers has a username and password. But these usernames are very simple and easily got by a simple guess.example: internet cafe and companies usually gives "admin" or "administrator" , and gives a password that can be remembered easily {123456}. to change or view username log on to http://192.168.1.1 {It is the general IP Address used in majority of routers but some routers use other IP addresses mainly WiFi hubs from Mobile Connections} . And this will decrease the usage by strangers.

Give Your Network A Rare Name

            Usually networks get the name that stored as default in routers such as their company names. So strangers can easily find out our network and they can also access it easily. By giving a rare name we can control over usage and also distinguish our network from a big group of networks.in some of the routers , the name of the routers transfer to the group of networks. we can also stop this facility due to secure our network.

Encrypt Your Network

      We can also encrypt the network by choosing a safe type of signal such as WPA2. WEP, WPA, WPA2 are the main types of signals.WPA2 is the safest and secure signal type from these type of signals (this system is only available in the routers that released after 2006) . We can also give a passfrase/password to giving more security.

Control Number Of Users
To reduce the number of users we can give MAC{media access control} address to people who want to access our network. so only who know the mac address can access the network.
       To know your computer's MAC address
  • start----accessories---command prompt
  • then type "ipconfig/all"-----enter
Now we can see a big lined address this is your pc's MAC address. Such you can set this MAC address in router setup and the computers with specific MAC Address can only access your Wi-Fi Network.

Control Range
   Reduce the range of the router . If we are using it in a house use only small range of radiation.it can control strangers to use our network

Another One You Should Hardly Beware

 When you open or close your Wi-Fi network, there is still another security risk of which you should be aware. When you access Web pages or send email over a Wi-Fi network those transmissions are sent "in the clear." In the clear means that a sophisticated and determined hacker could grab that information right out of the air and Capture Your E-Mails And Web Page Requests. This is also the case when using Wi-Fi at your local coffee shop. 
 
When Sending An File 
 
        Make sure that your Internet connection is secure before you send very sensitive Internet communications over it. On the Web most sites that perform sensitive transactions like shopping with a credit card or checking bank account information use Secure Socket Layer (SSL) technology. SSL encrypts the transaction -- creating a secure tunnel between your computer and the Web site server.
How do you know if your Web page transaction is using SSL? 
            One good way is to look at the Web page URL. The prefix should start with "https://". The "s" means it's SSL secure. You can also look for a padlock icon or a solid key icon on your Web browser. Some popular Web-based email services allow users to log-on using a secure SSL connection. If you're sending or receiving email while using a Wi-Fi network, make sure you log-in to your web mail using SSL.

Use a Virtual Private Network (VPN) to Secure All of Your Wi-Fi Transmissions.
 
      A VPN is an advanced networking feature. It is a technology that creates a tunnel between your computer and the network server. Many corporate networks have VPNs to protect transmissions. If you are accessing your work files or email using a Wi-Fi network, make sure your office network administrator has created a VPN for those transmissions.