What is the difference between Firewall and Antivirus?

Most of the person thinking that firewall and antivirus is the same function but the answer is NO.

These two security systems producing web pay to our system.

What is web pay?

Webpay service uses Security Sockets Layer(SSL) software to encrypt our personal information.

Antivirus:

Antivirus is totally different from the firewall.It will activate security protective system for removing malware threads. There are three steps followed here.

Detection: It will detect infected files located the folder.

Recognise: It will recognize what type of thread(bots, virus, trojan and etc )

Click Here: What is Malware?

Removing: Finally removing the thread and replacing the original data.

Firewall:

Actually, you can see inbuild firewall on your operating system. Whenever you connect to the internet threads will come through the network and unwanted network communication. But it will stop and check the firewall like barrier once activated. It will allow only authorized network

There are three types of firewall available

• Packet Filtering Firewall
• Application/Proxy Firewall
• Hybrid Firewall

Before going to demonstrate about types of firewall I would like to explain about data packet.

Data Packet or IP Packet: 

For example, if you want to download 100MB from the internet we will not receive the entire 100MB data advance. But we will receive small packets

Somehow the part of this 5MB pocket is occupied with some information that is which computer is sending the data and which computer is receiving the data and etc and the remaining portion of 5MB data contains the part that what we want to download. So 

Part of the accure data+some information=Data packet or IP Packet and accure data is called payloa d.Now we can start with types of firewall

Packet Filtering Firewall:

Consider you downloading some files from the internet(receiving small packets ).When the small packets arriving at packet filtering firewall it will check sender, receiver and port number in the data packet.The rules are written in the list called access control list.it will check whether the data packet is genuine or not. If everything is ok then it will pass to the computer through packet filtering firewall.

Drawback:

Packet filtering firewall provides low security because it only checks sender, receiver, and port number but it will not look payload so that hackers could send any files that contain malware.

Proxy Firewall:

Actually, proxy firewall do not let the internet know which computer wants to visit their requested website i.e proxy firewall hides us from hackers on the internet.

For example, you are using the proxy firewall and sending some request for visiting some website like www.filehippo.com.Here proxy will take the request from you then go to the web server and receive the information and forward to you. In this case, web server knows that proxy firewall is the one who wants to visit the website but the original client is you. So proxy firewall do not let the internet know the original client.

Application Firewall:

Application firewall will check the data packet with payload also but its very slow compared to the packet filtering firewall.

Hybrid firewall:

Hybrid firewall combines packet filtering firewall and application firewall.

Using firewalls in an environment:

• Application firewall will be using in medium risk environment like University
• Packet filtering firewall will be using in Florist shop
• Hybrid firewall will be using in the hospital