Why do we need a Firewall?

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Why do we need a Firewall?
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What is a Firewall? As the names
indicate, firewalls work as barriers or security
layers between your system and the threats of the
cyber world. A firewall is a type of hardware and
software that prevents unauthorized network
access, and it examines data flow using a set of
rules to detect and prevent threats.
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Why do we need a Firewall? Firewalls are used to
protect against network-based attacks and can
also aid in preventing application-layer threats.
So here, lets discuss some of the benefits of
using the firewall in a corporate and consumer
environment. 1. It prevents unauthorized control
access One of the worst things in-network is when
unauthorized users access your system. And, of
course, we don't want any unauthorized access to
control or seize our data. So to prevent these
kinds of unauthorized access, we need to
configure a firewall to prevent attackers from
taking unauthorized access. 2. Prevent DoS
Attacks A firewall is one of the resources
available to protect against DoS attacks, remote
access, and malicious macros. 3. It protects old
PCs and systems Despite the fact that Windows XP
and Windows 7 were released in 2001 and 2009,
some individuals continue to use them. Firewalls
safeguard these computers from viruses spread by
cybercriminals on the network. 4. It makes
online games safer One of the teenagers most
prominent streaming activities is gaming, which
poses a significant security risk. Before you
begin playing online games, it is always good to
have a firewall turned on.

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• 5. It blocks unsuitable or immoral content
• Firewalls prevent suspicious activity and
  viruses, prohibiting inappropriate and unethical
  information, such as adult websites.
• 6. It may be hardware or software
• As we all know, a firewall does not always
  contain software nonetheless, most homes have
  hardware-software incorporated into the router.
  Hardware firewalls are installed on physical
  systems or devices based on the customer's needs
  and suitability. 
• Type of Firewall
• When it comes to firewall types, there are four
  primary groups based on how they filter data.
• A packet-filtering firewall examines the packets
  in isolation when it doesn't know the context of
  the packet.
• A stateful inspection firewall checks network
  traffic to see if one packet is connected to
  another.

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• 3. A proxy firewall determines packets at the
  application layer of the OSI model
• 4. A Next-Generation Firewall (NGFW) merges
  organizational firewall features with an
  Intrusion Prevention System (IPS) and application
  control using a multilayered approach.
• Final Words
• In network security, the concept of a firewall is
  relatively broad. If you want to learn more about
  firewalls, check out InfosecTrain's Network
  Security training course.
•  

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About InfosecTrain

• Established in 2016, we are one of the finest
  Security and Technology Training and Consulting
  company
• Wide range of professional training programs,
  certifications consulting services in the IT
  and Cyber Security domain
• High-quality technical services, certifications
  or customized training programs curated with
  professionals of over 15 years of combined
  experience in the domain

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