What is computer firewall software?
A computer is often vulnerable to a lot of viruses and spyware. These can have a negative impact on the wellbeing of the computer and the data that is on the hard drive. Viruses can come from the internet or one of the users of a local area network. Sometimes unauthorised users can gain access to a local area network and infect the whole system with viruses. There are many problems that come with the entry of viruses into a system. One of the most notable problems is the loss of data or the leakage of data. To prevent any of the above from happening, firewalls can be used. A firewall can be a device that blocks the movement of viruses into a local area network. It identifies a threat and blocks it from entering into a network. Firewalls often use computer programs which are commonly referred to as firewall software. All firewall software comes with a number of features which make them reliable defenders of a local area network or computer. Some of the common features of firewall software are as follows:
- Being able to identify and prevent the movement of files that are infected by viruses. This feature enables a firewall to prevent viruses from infecting a network. Some firewalls do not only prevent viruses and spywares from entering into a system, but they also get rid of them without warning depending on the settings set by the user.
- Firewall systems are equipped with user preferences. This means that the user is free to modify certain settings to meet one’s demands.
- Firewall systems can prevent the entry of any unauthorised users into a system. The software may be equipped with certain special identifying tools. In most cases, all the data that enters or leaves a system is first detected by the firewall.
What are different types?
There’re 2 main kinds of firewall, software or hardware based. Hardware is when you will install firewall software on the separate computer as well as configure so that this acts as the doorway in your network. For such configuration to work out, firewall computer should be between network and internet, it will be fitted with 2 network cards. Advantage of such method is any attacker will need to compromise firewall computer before having an access to other network resources. Firewall will protect the whole network not only the computer it’s installed on. Disadvantage is you will need more hardware, but this will get mitigated as many hardware firewalls will run on the low spec hardware. Thus, if you’ve Pentium 3 computer in cupboard collecting dust then go collect it & give it the new lease as the hardware firewall.
Suppose you are searching for the hardware based firewall I will then recommend using the Untangle Linux Firewall. It is the open source software that being simple to setup & configure is very powerful. For example, it will be configured as VPN server letting the remote access to network.