Firewall: Pros and Cons

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Firewall is a network security system that monitors incoming and outgoing network traffic based on certain rules and regulations. It creates a barrier between an internal and an external source (mainly the internet). They are broadly categorized as network firewalls and host-based firewalls. This technology came into being with the beginning of the internet in the late 1980s.

A firewall basically works as a filter between the computer or network and the internet. It is used in numerous ways in to add security in a business. Large business firms have complex firewalls to protect their information. A firewall can protect the outside computers to have an access to the inside network. It also prevents insider trading done by the employees for their own advantage.

A firewall is like a fence around the building to protect it from various dangers but as a fence can be broken a so can a firewall. Hackers are the people that can hack into our firewall and steal our important information.

Additional steps can be taken in a business to prevent the loss of important information.


This process involves encoding an important information or message that only authorized parties can access it.


Nowadays instead of using passwords, people use passphrase i.e is a meaningless sentence that can be remembered easily which guarantees a high level of security.


In many companies, the employees are allowed the access to the information that is required by them to work effectively. Also in some offices, there is a restriction to use social networking sites as because the employees may click an advertisement or a link that may give the hacker the access to personal confidential information.


The ability to monitor the incoming and outgoing information is necessary for the protection of confidential information.


Come what may the firewall is the first and the basic level of security any business can adopt. The business must go for the stronger firewall in order to have a high level of security.

So in the following ways, we can secure our information with firewall and other measures.

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