These computer elements are considered to be of great importance to most The computers, mainly because they are made to help maintain secure computer equipment against unauthorized access to them. And it is that when a computer is connected to the Internet it will always be susceptible to any type of pirate attack.
Therefore, one of the most common ways to try to brake these types of attacks is using the firewall or also known as , considering that its mission is prevent unauthorized access to the . It must be borne in mind that most of computer attacks are executed when the machine is connected to a network Y there is a security hole through which 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 thereso the best solution It will be knowing how to defend yourself 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 firewall it’s a computer element which aims protect a computer or computer network system from third-party attacksfor this it tries to block access to a private network connected to the Internet by unauthorized users.
In this way, firewalls perform a very comprehensive analysis of all messages entering and leaving the networkthis in order to detect any intruder type who wants to enter the Computer network or in one particular computer.
In this case those who do not that meet the security criteria will be rejected. So that this can be understood 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 being constantly attacked or infected.
Fortunately, it should be mentioned that these firewall they are usually in operating systems, so users in most cases simply need to activate it from the operating system settings. in the programs antivirus is also very common to see themsince the vast majority have them included as a way of additional protection to help slow down the entry of evil codes.
What are the functions of a firewall and what is its importance?
As it has already been mentioned in the post, the main function of a firewall is to protect the traffic that enters a computer or computer network system connected to a private network, In other words, it takes care of record Internet traffic from a device for the purpose of protect private computer network preventing the access of unauthorized users to it, mostly malicious code or illegal activities within computing.
All this is done with the purpose of being able to avoid 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. Based on all of 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 he will take care of control all the information and traffic that is transmitted through it from one network to another.
To do this, it runs a quick scan to detect that all the data who pass by meet safety requirements. In the event 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 capable of presenting 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 we explain what each one of them consists of:
software firewall
East firewall type can be found in both paid and free applications, 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 such a case “Software Firewall”.
These software elements are used mostly in home or business computer networks with the aim of be able to monitor all traffic Y information step for so block all those that are necessary. In general, every computer comes with a factory-installed firewall regardless of the operating system you have installed. In general, they are factory activatedotherwise you must perform its activation from the system settings.
So that you can understand these software elements a little more, here we show you their main characteristics:
- They are easily integrated with other security products.
- Free software firewalls 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 greater protection at all times.
- These elements must exist in any computersince it is the most basic security system that these teams must have, so there is no reason for the user not to use them.
- Is very easy to install, mostly usually factory activated and in case of not being the same operating system will throw an alarm about it.
hardware firewall
These firewalls are installed in external devices how can they be the routers which are used to power Internet access. This means that all the 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 have it. Also, the price between one and the other is very similar, so paying a little more can help you have a much safer and more reliable network system.
Therefore, if a firewall works in software and another in hardwarethis means that there is the possibility of having two firewalls activated simultaneously on the computer, This will certainly help you get one. greater protection, but for this it is necessary to have extensive security knowledge so that each of them can fulfill their function correctly without affecting each other.
Commercial Software Firewall
This firewall is the 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 on a network?
Undoubtedly, you can count on a firewall 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 equipment.
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 elements 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 far beyond a simple packet inspection.
It is also important to mention thatl Firewall packet inspection engine needs to be dynamically updated so that this can identify all kinds 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 block
As computing advance malware tooin the case of the malwares they no longer need the intervention of the users to be able to work correctly. This is how all this has progressed 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 malwares 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 arrives at networks through different channelsso it is necessary to try to prevent them through dynamic security services.
Help provide optimum 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 are going to 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 aside restriction all those unauthorized users.
- allows 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 firewall offer a control the security of your network and the teams that are individually connected to the Internet. Thus avoiding any suspicious activity and that does not comply with the rules can access.
- Finally, it offers a…
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