Blog of .Ghassen

Is your internet sluggish? If you suspect a neighbor is stealing your Wi-Fi, these two apps can help you identify devices using your connection and help you boot them off.  Is your internet moving a little slower than usual? Are you seeing hints of devices you don't recognize in Windows Explorer, or when you cast media to your TV? If you suspect a neighbor is stealing your Wi-Fi, here's how to check (and boot them off). "So someone's watching Netflix on my internet," you may say. "What's the big deal?" Even if you have a little bandwidth to spare, you probably don't want other people on your network, especially if it's unsecured. If someone has access to your network, they have access to all the computers on that network, and that's dangerous. They could access files you're unknowingly sharing, they could infect you with malware, and in certain situations they could even steal your passwords and other personal info...

What is HTTP? The HyperText Transfer Protocol is the language used to communicate between web browsers and servers. In other words, it is pretty much the language one computer uses to ask another computer for documents. HTTP follows the client/server model. This is a structure that describes how a server provides resources and services to a client. When the client requests something from the server, the server can either accept of reject the connection. If the connection is accepted, the server establishes and maintains a connection with the client over a protocol just like HTTP. Think about HTTP is a set of rules for transferring files like text, images, sound, video and other multimedia files. Computers that communicate via the HTTP must speak the HTTP protocol. This brings me to talk about the request response cycle. Since we know that two computers are connected physically via the Internet, using the URL’s allows us to communicate with these servers. This means that HTTP uses ...

Did you know you could be connected to Facebook.com—and see Facebook.com in your browser’s address bar—while not actually being connected to Facebook’s real website? To understand why, you’ll need to know a bit about DNS. The Domain Name System (DNS) underpins the web we use every day. It works transparently in the background, converting human-readable website names into computer-readable numerical IP addresses. DNS does this by looking up that information on a system of linked DNS servers across the Internet. However, different DNS servers can behave differently in terms of speed and security. So, let’s take a look at how DNS works and what you can do to make sure it’s working its best for you. Domain Names and IP Addresses : Domain names are the human-readable website addresses we use every day. For example, Google’s domain name is google.com. If you want to visit Google, you just need to enter google.com into your web browser’s address bar. However, your co...

Tor is an interesting and well-designed system, but like any computer system, it has vulnerabilities, and a couple of years ago, Tor was attacked in a particularly successful way by some researchers at Carnegie Mellon University. It uses a large network of computers or relays to anonymize traffic, and this is work by connecting to a Tor node rather than to the destination. And then it sets up what’s called a circuit so a series of nodes within the Tor network that involved in relaying that traffic before it reaches its final destination and because of how the Tor protocol works. It has lots of different circuits active at the same time. So if someone is monitoring one of these nodes or even many of them, they can’t figure out where packets are going or where they are coming from, unless they can control a large part of the Tor network and this is what these attackers were able to do. If attackers have control over enough nodes within the Tor network then for a partic...

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