Firewall What is it, what is it for and what are its main functions?

These computer elements are considered of great importance to most The computers, mainly because they are made to help keep computer equipment insurance against unauthorized access to them. And that is when one computer is connected to the internet always goes for be susceptible to any type of pirate attack.

Therefore, one of the most common ways of trying to stop these types of attacks is by making use of firewalls or also known as firewall, considering that its mission is prevent unauthorized access to the network. It must be borne in mind that the majority of computer attacks are executed when the machine is connected to a network Y there is a security hole where the expert can access the data that is there.

In the event that the computer is constantly Conected to internet, so this threat will always be there presentso the best solution It will be knowing how to defend against them. For this it is necessary to know in detail What are firewalls, what are they for and what are their main functions?for this, follow in detail everything that we will teach you in the post.

What is a firewall and what is it for in computer networks?

the firewalls or also known as firewalls it’s a computer element which has as its objective protect a computer or computer network system from attacks by third partiesfor this try to block access to a private network connected to the Internet by unauthorized users.

In this way, firewalls perform a very complete analysis of all messages entering and leaving the networkthis in order to detect any type of intruder who wants to penetrate the Computer network or in one particular computer.

In this case those who do not meet the security criteria will be rejected. In order to understand this a little better, it can be said that a firewall is a kind of security door of a housewhere they can only enter the people who live there and not strangers. In this waythe firewall is essential in computer systems connected to a networksince without it basically the team could constantly being attacked or infected.

Fortunately, it should be mentioned that these firewalls are usually in operating systems, so users in most cases simply need to activate it from the operating system settings. In the programs of antivirus is also very common to see themsince the vast majority have them included as a way of additional protection to help stop the entry of evil codes.

What are the functions of a firewall and what is its importance?

As has already been mentioned in the post, the main function of a firewall is to protect the traffic that enters a computer or network system of computers connected to a private network, In other words, it takes care of record internet traffic from a device with the purpose of protect private computer network preventing access to unauthorized users her mostly malicious codes or illicit activities within computing.

All of this is done for the purpose of prevent what is the extraction of private and confidential information, the installation and execution of viruses that could damage the operation of the equipment, prevent the user from being spied on, among other. In accordance with all the above, it can be said that the Firewalls are essential to ensure the security and privacy of users when surf the internet through a home or business network.

As for its operation itself, the firewall is located in the exact point where it happens the connection between the Internet network and the computer or computer networkthere will take care of control all the information and traffic that is transmitted through the router from one network to another.

To do this, run a quick analysis to detect that all the data who pass by there meet the safety requirements. In the case that detect any information that does not complythen automatically said data will be blocked and therefore they will not be able to have user network access for being considered as non viable information.

Types of Firewall What are the most popular that exist?

It is important to mention that there are different types of firewall available in computingtherefore, these firewalls are able to present themselves in two different ways, one for him intangible side as it is the software and the other for the physical side as it is the hardware.

That is why below we explain what each of them consists of:

software firewall

East firewall type can be found both in paid apps as free, in the case of free can be installed and used freely on the computer. These types of firewalls are also known as “Desktop Firewall” or in that case “Software firewall”.

These software elements are mostly used in home or business computer networks with the objective of be able to monitor all traffic Y information pass so block all those that are necessary. Generally, every computer comes with a factory-installed firewall regardless of the operating system you have installed. In general, they are usually factory activatedotherwise it must activate it from the system settings.

So that these software elements can be understood a little more, here we show you their main characteristics:

• They are easily integrated with other security products.
• freeware firewalls They are usually included in the operating system and they are only from personal use.
• You don’t need a hardware to be installed on the PC.
• commercial firewalls they usually work in the same way as the free ones, but these usually include extra protection features and much more severe, which will guarantee you a increased protection at all times.
• These elements must exist in any computersince it is the most basic security system that these teams should have, so there is no reason for the user not to use them.
• Is very simple to install, is mostly usually factory activated and in case of not being the same operating system will launch an alarm about it.

hardware firewall

These firewalls are installed in external devices how can they be the routers which are used to be able Internet access. This means that everyone computers that are connected to the Internet through a router are being protected by a firewall that is included in said device. If we compare it with the software ones, it should be mentioned that these hardware elementsthey are a lot more complicated to configure and install.

This procedure is usually done through a browser used to access the Internet. It is also important to mention that there are some router that does not have a firewall installed, so it is always recommended buy those that do. Also, the price between one and the other is very similar, so paying a little more can help you have a much more secure and reliable network system.

Therefore, if a firewall works in software and one in hardwarethis means that there is the possibility of having two firewalls activated simultaneously on the computer, This will definitely help you get one. increased protection, but for this you need to have extensive security knowledge so that each of them can perform their function correctly without affecting each other.

Commercial Software Firewall

This firewall is one that is integrated into all antivirus software available in the market. It works the same as those mentioned above, but this time it has much higher levels of protection and security, so the chances of control and configuration they are a lot more advanced than those for personal use.

What are the advantages of using firewalls in a network?

Without a doubt, you can count on a firewalls will offer you a lot of advantage, and it is that he himself is going to take care of increase your security and protection every time you use an Internet networkthis will prevent unauthorized third parties can access your computer.

Taking into account the importance of using these elements and that they are practically mandatory, here we show you the main advantages that firewalls can offer you:

They offer a scan of application traffic

These items not only they are able to analyze the information that is sent and received on the network, but also takes care of scan all application traffic, so this goes way beyond a simple packet inspection.

It is also important to mention that andl firewall packet inspection engine needs to be dynamically updated so that it can identify all types of threats, including spyware, malware and malicious code attacks. Note that the firewall must be able to detect and block any type of security threat.

Offers a malware lock

As computing malware advances tooin the case of the malware these no longer need user intervention in order to function properly. This is how all this has advanced and today simply with send an executable virus to attack network systems may be more than enough for infect important files and documents on computers.

Currently the malware or any other kind of viruses are inserted into Adobe PDF or Flash files, in order for the user to download and open them so that these threats can perpetuate in the team. This type of virus usually reaches networks through different channelsso it is necessary to try to prevent them through dynamic security services.

Help provide optimal performance on the machine

The purpose of use firewalls is to prevent the equipment from being affected by malicious software or malicious codethis with the aim of guaranteeing the good functioning of the equipment. Therefore, the firewalls they will help you guarantee a very good performance on the computerbut for this it is necessary that the same stay up-to-date over time.

Other benefits of using firewalls

• It allows create and define a barrier keeping to one side of restriction all those unauthorized users.
• allow a constant monitoring of all records and information that are sent to over the internet.
• Helps prevent attacks on your private network from others unknown networks.
• The firewalls offer a control of the security of your network and the teams that are individually connected to the internet. Thus avoiding any suspicious activity and that do not comply with the rules can access.
• Finally, it offers a Internet usage control blocked all that content be inappropriate and that I can get to place in danger state of the machine.