Installation of a firewall is good or bad

 

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. 

How it works?

1. *To Limit Network Traffic*:

 Data packets travel between devices on a network. The firewall intercepts and examines each packet's source, destination, and contents.

2. *Rule-Based Filtering*:

 The firewall applies pre-configured rules to determine whether to:

   Allow: Permit the packet to pass through. OR to

 Block/Modify and Reject the packet. Alter the packet's contents or routing. It basically  maintains a state table to track connections and ensure that incoming packets are part of an established conversation Furthermore  firewalls log and alert administrators to suspicious activity or rule violations.

Firewalls can be of following types:

* *Hardware-based*: Dedicated devices or appliances.

* *Software-based*: Programs running on servers or workstations.

* *Network-based*: Virtual firewalls integrated into network infrastructure.

Firewalls protect against:

* *Unauthorized access*

* *Malware*

* *Denial-of-Service (DoS) attacks*

* *Data breaches*

By controlling network traffic, firewalls provide a crucial layer of security for networks and devices

. Is there any cyber security systems / firewall installed  by developed countries? 

Of course, all the developed countries have put up elaborate firewall structures to prevent unauthorized access to their defense and core facilities. Some examples include:

1. United state of America.

- National Firewall:

In the United States the government has put up a national firewall for its networks and systems.

- DHS's Einstein Program: An IDS and IPS to secure federal agencies.

2. United Kingdom.

- GCHQ's Firewall: 

GCHQ, the intelligence agency of the United Kingdom has a strengthened firewall system that safeguards government networks.

- National Cyber Security Centre (NCSC): Helps strategise and advise on how to get firewalls set up.

3. _Canada_:

- CSE's Firewall: The firewalls in the networks used by the Government are protected by the Communications Security Establishment (CSE).

- Canadian Cyber Incident Response Centre (CCIRC): Offers advice on how to actually put into practice a firewall.

4. _Australia_:

- ASD's Firewall: The Australian Signals Directorate (ASD) employs firewalls for the protection of the government’s networks.

- Australian Cyber Security Centre (ACSC): Outlines on how to implement a firewall.

5. _Germany_:

- BSI's Firewall: The Federal Office for Information Security (BSI) deploys firewalls for exclusion of inclined entrances on government networks.

- German Cyber Security Authority: Offers information on how to implement a firewall.

All these countries also possess enhanced threat identification and management, intrusion identification and prevention mechanisms, well-established incident management frameworks, and firewalls.

- _Next-Generation Firewalls

(NGFWs)_: High-end firewalls with intrusion prevention capability and antivirus and application filtering.

These advanced firewalls and technologies assist developed countries in defensive measures for crucial infrastructure, government network systems and important information hackings.

Pakistan has recently installed a firewall system to counter the threat of digital terrorism. However, people all over the country have shown their grave concerns, as it resulted in the slowing down of networking which has greatly affected the business sector and the country's economy which has gone bad to worst.

1. Infrastructure problems: Internet infrastructure in Pakistan is not well-developed and this causes congestion and eventually slows down.

2. Higher demand from users: Growing internet usage and an increasing number of users stress the already built-up infrastructure.

3. Low international bandwidth availability: There is a low level of international bandwidth available in Pakistan, which makes it slow when the usage is at peak levels.

4. Power outages: A lot of power outages will dislocate the working of the network and lead to slowdowns.

5. Aging network equipment: Obsolete network infrastructure causes slowdowns and inefficiencies.

6. Network congestion: Too heavy a volume of traffic during peak hours causes congestion on the network.

7. Internet censorship and filtering: State censorship and filtering are one of the reasons that slow down the Internet.

8. Cyberattacks and malware: Cyber attacks and malware cause a dent in the performance of the network.

9. Lack of investment in network upgrades: Insufficient investment in the upgrade and maintenance of networks is also a contributing factor to slowdowns.

10. Regulatory issues: Ineffectiveness of regulatory mechanism and lack of good governance negatively impinge on the development of a network.

In the light of such challenges, Pakistan has to address its inadequacy in

- Upgradation of infrastructure

- Enhancement of international bandwidth

- Improvement in power supply

- Replacement of old network equipment

- Network security

- Investment in network development

- Responsive regulation and governance

With the improvement in these inadequacies, Pakistan will help improve the performance of its networks, thus providing better Internet services for its users.