Antivirus and firewall

Antivirus & Firewall: Why Do You Need Both?

Threats That Plague Our Cyber Security

Computer security is a constant demand. A threat to it can cause major data loss, infect devices that share the common network or through USB, take complete access over the system and steal confidential business information, bank details or customer data, creating irreversible damage.

Emails, the common mode of communication between employees as well as between businesses and customers, are a common agent of spreading viruses and malware. A lot of our jobs also require us to do online searches. More the searches, higher the risk of clicking on a malicious link that can infect the system within minutes.

Then remains the other common agents like CD, DVD, flash drive or any similar USB devices through which viruses spread easily. So PCs and laptops across all operating systems need being secured. This is where firewall and antivirus comes into play. Confused about how one differs from the other? Or why you need both? McAfee chat support clarifies the confusion today for once and all. Read on to find out.

Firewall & antivirus: What does each do?


A network security device that is so crucial firewalls come pre-downloaded on a computer. They allow or deny a private/corporate network access to traffic flows with the internet. All communication has to flow through the firewall where only traffic defined in security policy is permitted in the network and the rest denied.

You don’t get notifications that a firewall is at work. It will work through all network information to detect anything that seems off. It will automatically search through all attempted network connections and traffic, to bring you safe web material.


Antivirus offers security on a file level. It will check every file, referring it to its dictionary of known viruses. Once it matches, the file is repaired, quarantined or deleted. It monitors how each program runs and if there is any suspicious activity, like the program attempting to write to a specific directory or change operating system settings, it flags (embeds a code to identify) it. McAfee antivirus users can call McAfee Support number UK for aid you require in troubleshooting or scanning your systems for viruses.

Why do you need both firewall & antivirus?

Firewall protects your web browsing and connection. You do not need to download anything, even a click on an infectious link is enough to cause damage. It will stop you from browsing content that may cause harm to the system. Firewall too stops viruses from accessing a network or device.

But virus spreads in so many other ways as well. It could spread from a CD, DVD or USB device as well as some other device using the same network. It can get downloaded from an infectious link too, when we are downloading something important. This is why you can’t do without an antivirus either.

Here all executable program files are scanned before entering a system. Those matching the signature are blacklisted as ‘viruses.’ The others make their way to Defense+HIPS (Host Intrusion Prevention System). Here only the unknown files are picked to run through Defense+Sandbox. Here they run in a restricted environment, then the good files are added to the Whitelist and the others go to the Comodo labs for analysis.

The cyber world is challenged by more than 60,000 new malwares every single day. It is important therefore to keep updating your antivirus to fight the more sophisticated malwares. McAfee antivirus support aids McAfee antivirus users to install all latest updates and upgrades in their McAfee antivirus software.