What is IP blocking?

Blocking the

Internet Protocol (IP), more often known as IP blocking, is a way for an internet server or other program that communicates online to avoid contact with another system. One of the most common uses of IP blocking is to prevent a computer that is a known security threat to make contact with the server, protecting the server from any harmful actions. Other uses for IP blocking are to prevent cookies or websites from being monitored in order to see user actions and restrictions on the information accessible to the network. Although there are several methods that allow the operating system, router or other software to implement the IP block, there are also many ways to circumvent and still other ways to abuse. Almost all Thhruby Internet Communication Identify IP addresses of computers that exchange data. Many protocols and software sets of servers include a mechanism that checks the incoming connection against the listBlocked addresses to limit access and ignore the requirements of these blocked addresses.

Blocking

IP is often used as a reactive defense after attempts to attack the computer system, in particular the attack of the service rejection (DOS) or the distributed attack attack (DDOS), in which the target server is flooded with the requirements of a malicious system until it turns out. The same blocking mechanism can also be used to instruct mail servers so that they do not receive messages from addresses that are known to send bulk e -mail. By stopping a malicious computer in the loss of server resources, efficiency and security can be significantly increased.

Some computers are connected to the Internet via an an intermediary server calls proxy. There are several public proxy servers that anyone can use, and effectively mask the real IP address of the computer using proxy. For this reason, some network administratorsThey decide to block the most famous proxy servers to avoid any access from them.

Information stored in the IP address and how to operate the IP blocking allows you to disable whole computers groups at once. This wider area is known as a domain. This can be used if, for example, one Internet access provider has an unusually large number of harmful hackers. Instead of waiting for discovery of each individual IP address, the entire access provider can be blocked.

The widest range of addresses within the IP address is the country of origin or country code. This can be used to block all internet traffic from one country from the use of the server and its resources. Some websites of electronic trading perform this type of blocking when a large amount of IP address fraud can be traced in one country.