book guide
Local Area Networks and the Internet
When a local area network is connected to the global Internet, one of the PCs, called a server, becomes a kind of conductor and connects to the Internet using a modem or in some other way, while other computers operate through it, they are also called workstations. Just like any of us has a mailing address where we receive mail letters, each computer is assigned an IP address for functioning in the Internet environment, but usually it has only a computer conductor directly connected to the Internet.
If the computer is connected through a modem, it usually receives a dynamic address from the service provider. It is assigned automatically and is valid for a specific time. While there is also a static address, a permanent address for an unlimited period of use. At least two network devices are usually connected to the gateway computer (server): a modem and a network card, so it actually has two IP addresses, real and internal, which the network card receives on the local network. Continue reading
How to protect your password from hacking
Today, passwords play a significant role in human life. Everywhere on the Internet, on every site, each account must have its own password in order for the user to gain access to its data. Losing or breaking a password can often result in a big problem and headache.
This article will focus on passwords, hacking methods and creating passwords.
How do passwords break?
There are always at least two ways to crack a password. This is a banal selection (which takes a huge amount of resources and time, but with proper luck, or rather, with due naivety of the user, it will not take an hour) and no less banal “attack of pets”.
Password guessing
Recognize after all somewhere, at least once you set the banal and well-known qwerty password. This is certainly good if it is not in your mailbox through which you can crack almost all your existing passwords. Password guessing is a set of random numbers in the password field and it implies the need to know the account itself. On some sites this is obvious, on others it’s hidden. Continue reading
What is a firewall and why is it needed?
We will not go into little things like translating words, occupying them some part of the article. Just point out that a firewall (from the English – fire wall), or as it is also called brandmauer (with German – fire wall) in Russian has two names that display its purpose (inter) firewall. This is a screen that protects the user from influences coming from outside. When connecting to the Internet, having a firewall is not a luxury, and indeed such a risk is hardly justified, it will most likely lead to raking up a bunch of viruses, or even just to reinstall the system.
In addition, the firewall performs the function of blocking access by unauthorized persons to your computer via the network. This is not to say that the standard Windows Firewall is bad, it is quite suitable for the initial level of protection. But this is if you do not store important information on your computer or do not work with means of payment via the Internet. If you are interested in the security of your data, then changing the Firewall will not be a stupid idea. Our article, in fact, is written based on what would help you, ordinary users, to choose a firewall that suits you. Continue reading
