It doesn’t seem like there is a need for a firewall. People have been questioning the value of firewalls for a long time. During the May 2012 edition of his column, Roger A. Grimes said that “firewals” must go away. There has been a lot of trouble with firewalls “for as long as I can remember,” Grimes says. “Today there is almost no reason to have one.”
Is Grimes correct? Is there no longer any point in having firewalls?
To find out how firewalls work, read this:
Traditional firewalls control traffic coming into and leaving the network based on the source IP address, destination IP address, port, and protocol of the traffic. People who use these solutions think of traffic as a flow, not as individual packets. As a result, these tools can set rules for traffic and help security experts figure out what to do based on them. They also used packet filtering to look at traffic coming in and going out, which is also called north-south traffic. Virtual private networks (VPNs) were also used to get into the network in a safe way.
In the last few years, some people have been using next-generation firewalls (NGFW). These come with the same level of protection as a basic firewall, but they can be used in a lot of different ways. Instead of port numbers and IP addresses, for example, they set rules for specific applications based on their knowledge of the applications. This lets them stop apps that they don’t want. In fact, it even works if attackers change the port numbers and IP addresses they use to get around traditional firewalls, tactics that could get around traditional firewalls. Many NGFWs also come with threat intelligence that helps you stay up to date on new threats.
Where Firewalls Fail: In the Cloud, they don’t work well
Most traditional firewalls and next-generation firewalls don’t work as well in the age of the cloud because they don’t work as well as they used to. They’re moving their data and computer systems out of the data centre and into places they don’t own. At the same time, employees are using their own devices that aren’t part of the network to get to that data and those systems more often. Together, these facts have wiped out the idea of a single network perimeter, where most traditional firewalls and NGFWs have been protecting for years.
The cloud has also helped to change what a network security tool like a firewall should be used for. People who work remotely can attack the network from anywhere in the world. They could use a real employee’s account that had been hacked to do bad things. Because of this, organisations need to be able to look at east-west traffic for signs of suspicious activity, like a malicious person using a real account to move around the network.
There are new firewalls that work on the Internet through a cloud.
The rise of the cloud has certainly changed the way people think about network security. But, it hasn’t completely changed the way people think about it. The same rules apply to cloud-based systems as they do to things that are on the ground. The way they do it might be different, but the basic ideas are the same.
The same is true for the firewall, as well. The cloud has only moved the conversation to the need for firewalls that can protect more virtual landscapes.
That’s why a lot of businesses are investing in an NGFW that’s set up in the cloud or other “virtual firewalls.” These kinds of solutions are good because they can be set up in many different ways. These let cloud network administrators divide the network into smaller parts as their cloud landscapes change. The cloud-based threats that can harm important data and systems can be kept at bay by this.
If you use virtual firewalls with other tools, they can be even more safe. A zero-trust network can be made with these tools’ ability to divide people into small groups. The cloud-based solutions can then be used to block attacks and other connections that come from outside the circle of trust. Keep the cloud safe: This will help.
It is here to stay.
Is there going to be an end to the firewall of the old days soon? Maybe. But not for the idea of a firewall, or for letting people in and blocking unknown connections. It will become more difficult for the firewall to keep the network safe as the network grows and changes. This is already what’s happened with the cloud, and it’s almost certain that it will happen with the next changes to the network as well, too.