Management Notes

Reference Notes for Management

A firewall allows the organization to:

A firewall allows the organization to:




a) enforce a security policy on data exchanged between its network and the Internet.

b) check the accuracy of all transactions between its network and the Internet.

c) create an enterprise system on the Internet.

d) check the content of all incoming and outgoing e-mail messages.


A Firewall is defined as network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies in order to prevent unauthorized access to a network. At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet. It is a tool popularly used in cyber security which filters the traffic on a network. It is useful for separating network nodes from the external traffic sources, internal traffic sources, or even specific applications.


Firewalls are used in both personal and enterprise settings, and many devices come with one built-in, including Mac, Windows, and Linux computers. They are widely considered an essential component of network security. The firewall protects your computer from outside cyber-attacks, blocking malicious or unnecessary traffic across the network. A firewall can also block malicious software from accessing an internet-connected system or computer.

According to an organization’s security policies, a firewall monitors and filters incoming and outgoing network traffic. Basically, a firewall serves as the line between a private internal network and the Internet. The primary purpose of a firewall is to allow non-threatening traffic in while keeping dangerous traffic out. The firewall has contributed greatly to modern security techniques and is still widely used today. As networks grew more complex, they needed new security methods that could handle this. Client-server architecture – the central architecture of modern computing – is built around firewalls, which are the foundation of network security. To inspect traffic and minimize threats, most devices use firewalls, or tools closely related to firewalls. 


Both corporations and consumers use firewalls. Along with other cybersecurity devices, they are commonly incorporated in a SIEM strategy for security information. These devices may be installed at an organization’s perimeter to guard against external threats, or within the network to create segmentation and protect against insider threats. Furthermore, firewalls log and audit important information in addition to defending against threats. These systems can be used by administrators for identifying patterns and improving rule sets since they keep records of events. Regular updates of cybersecurity rules are necessary to keep pace with ever-changing threats. As soon as new threats are discovered, vendors develop patches to address them.
The firewall can be used in a single home network to filter traffic and alert the user to intrusions. Especially important are they for constant-connection types such as cable modems or DSLs, as they use static IP addresses. Many antivirus applications use them alongside them. Unlike corporate firewalls, personal firewalls are usually a single product rather than a collection of products. Software or a device containing firewall software is usually available. Devices in the home are often restricted via hardware/firmware firewalls. There are various types of Firewalls used in both personal and enterprise environment which are as follow:


Types of Firewalls


The Correct answer for the given question is Option a .



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