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What Is the Difference between Firewall and Antivirus Software?

Firewall and antivirus software are digital guardians. A firewall acts as a gatekeeper, controlling incoming and outgoing network traffic, while antivirus hunts for malicious software hiding within your system. Together, they form a robust defense against cyber threats. Want to understand how they work in tandem to protect your digital world? Join us as we unravel their unique roles.
Jacob Queen
Jacob Queen

Firewall and antivirus software are two fundamentally different kinds of security applications, both designed to protect an individual's computer system from invasion and assault. A firewall is set up to block access from unwanted network communications, often including both incoming and outgoing messages. Antivirus software is designed to deal with maliciously designed programs that find their way onto a person's computer. Firewall and antivirus software are often distributed together as part of a single software package, and because of the nature of some network threats, they often work in tandem to protect a person's system in different ways from the same menaces.

Viruses are constantly changing as malicious programmers come up with new ways to corrupt computer systems, and antivirus software has to change along with the threats. Most antivirus apps are designed to monitor running programs for new threats, and usually the user can run a scan for infected files, removing any that are found. Sometimes a new virus will be developed that the program doesn't recognize, but most antivirus applications are set up for daily or weekly updates to the core program that help expand capabilities and allow for the recognition of new threats.

Antivirus software is used to remove potential viruses.
Antivirus software is used to remove potential viruses.

Firewall software is designed to protect against unwanted network communication on a computer. Malicious individuals sometimes try to access other people's systems through a network connection in order to gain access to an individual's private information or install malicious software. Firewall programs can recognize unauthorized communications and block them. Sometimes the software is set up with specific rules about what sort of communication is allowed, and in other cases, the rules may be user-defined with different levels of security for different situations.

A firewall is designed to block unwanted communications.
A firewall is designed to block unwanted communications.

In many cases, firewall and antivirus software packages can often be very complimentary in the way that they function. For example, many viruses are designed so that they try to send messages out to the Internet; distributing private information about a person's browsing habits along with credit card numbers and other data to malicious individuals. A good firewall will recognize these sorts of attempts and block them, which can be helpful in cases where the virus is too new to be recognized by the antivirus program. Another situation where firewall and antivirus software can work in tandem is when malicious individuals attempt to access a system through the network for the purposes of implanting a virus. In these cases, if someone finds a way through the firewall, the antivirus software can serve as backup protection.

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Discussion Comments

Terrificli

@Vincenzo -- you need to add a third piece of software to that portfolio. A good malware/spyware scanner is also handy because that will pick up the stuff that the user authorized to be put on a computer without realizing it is harmful. Neither a firewall or virus scanner are very good at weeding out those things.

Vincenzo

Think of your antivirus scanner of the brains behind your protection and the firewall as the brawn. The firewall is great about not letting things through, but you can't set it up to block everything because you would have no network access at all. Antivirus is there to scan the stuff that does get though and filter out viruses.

All in all, you simply can't wander around the Internet without both of these in place.

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    • Antivirus software is used to remove potential viruses.
      By: jamdesign
      Antivirus software is used to remove potential viruses.
    • A firewall is designed to block unwanted communications.
      By: Africa Studio
      A firewall is designed to block unwanted communications.
    • Firewalls prevent hacks that can cause a loss of confidential information.
      By: nito
      Firewalls prevent hacks that can cause a loss of confidential information.
    • Viruses are constantly changing as malicious programmers devise new ways to corrupt computer systems.
      By: Minerva Studio
      Viruses are constantly changing as malicious programmers devise new ways to corrupt computer systems.