Know your number (NEW)

As we use many SIM and sometimes forget the no. of those....and also there may be chance that there is zero balance in the sim...In that case you need to know your no. even in zero balance for this i am posting here some mobile operators trick to know their number.

How to Block Websites in a Home or Office Network

Be it a Home network or an Office network, there is often a need to block few websites to stay away from distracting websites like social networking websites, videos sharing or pornography sites. Whatever be the reason but don’t want anyone in your network to access these sites. 

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Footprinting a VoIP Network

Overview

While the intricacies of invading a country are slightly different than hacking a VoIP network, the success of each typically depends on having done solid reconnaissance and research well before the first shot is ever fired.

By its very nature, VoIP exemplifies the convergence of the Internet and the phone network. With this convergence, we are starting to see the exploitation of new exposures particular to VoIP as well traditional avenues of attack. Much like WWW technology, VoIP devices, by technical necessity, are advertised and exposed on IP networks in many ways, allowing hackers to find and exploit them more easily.

Any well-executed VoIP hacking endeavor begins with footprinting the target—also known as profiling or information gathering. A footprint is the result of compiling as much information about the target's VoIP deployment and security posture as possible. This initial approach is similar to the way a modern military might pour over intelligence reports and satellite imagery before launching a major enemy offensive. Leveraging this profile allows a general to maximize his troops' effectiveness by aiming strategically at holes in his enemy's defenses.

This chapter focuses on a variety of simple techniques and publicly available tools for gathering information about an organization's VoIP security posture from the perspective of an external hacker.