Network Security Solutions: From Firewalls to SASE

Disclosure: This content is reader-supported, which means if you purchase through some of our links, we may earn a commission at no extra cost to you. 

Network security is an issue every web-based company tries to get the best services so they can protect their business-related information. But the thing is, cybersecurity is a huge sector with multiple network security solutions. It is common that some companies can’t decide on these solutions or even didn’t hear about some of them. 

That’s why this list consisting of several solutions from firewalls to SASE can help you with that. Follow along to learn more about these network security solutions and choose the most suitable one for your organization.


Firewalls are one of the most known security solutions as they have been around for decades. It is also usually the first thing companies go and deploy when it comes to setting up a cybersecurity system. 

Basically, a firewall is a system that doesn’t allow unauthorized access to your corporate networks. The context to decide whether an access requestor is identified as trustable or not is created by particular rules and policies. So as a result, you have a protected private network that is secure from the wider internet with malicious users. 

What they do to filter down authorized access and prevent unauthorized ones is monitor the outgoing and incoming traffic at all times. In order to understand it better, you can take the word “firewall” literally. They protect your networks from the outside dangers of the internet and seal all the authorized activities within your private network environment. 

Virtual Private Network (VPN)

As most of us already know and use the commercially designed ones, VPNs allow us to be anonymous and let us act privately on the internet. They hide the local IP addresses of the users so they create a virtual network where user activities are untrackable. 

In the case of network security, VPN solutions protect these networks by encrypting and securing the endpoints with all the information that travels from one point to another. Thus, sensitive data is not available to unauthorized users and is always kept encrypted.

There are many types of VPN solutions, and some of these solutions can let companies grant secure remote access to work-from-home employees. 

In these solutions, the remote users connect to a private virtual network that is made accessible via a private tunnel. Thus, any activity or information shared between the two parties is safe from malicious users.

Secure Access Service Edge (SASE)

SASE is a modern security framework that is specially designed to facilitate cloud protection and also secure network access processes of web-based businesses. 

Put simply, SASE combines network security and network connectivity, letting IT teams run these two from the same place. Within a SASE framework, there are many products and services such as SD-WAN for network connectivity and Zero Trust for secure access. These may change based on the needs of companies. 

The tools and products required in a SASE architecture are cloud-native, so businesses don’t have to deploy hardware and are able to acquire them from an online provider. If you choose NordLayer as SASE provider, you can actually get all the necessary security services from a single vendor to make adoption easier. 

Intrusion Prevention System (IPS) 

Intrusion Prevention Systems (IPS) constantly monitor the company-owned computers to see if there is any suspicious activity happening. They monitor these activities, report them to the IT security teams or prevent them from threatening the computers by themselves.

They can work with other network security solutions; so if they need to block a user’s access due to a potential threat, they can configure other tools to do this. 

In the same way, IPS solutions are usually deployed into firewalls and not as a single solution. Thus, they can be integrated into other parts and are definitely one of the most important components of a proper network security system. 

Software-Defined Perimeter (SDP)

The wide usage of cloud computing and SaaS applications are increasing every day; today, 94% of all companies use the cloud one way or another. So, in addition to traditional network security perimeters, they need a solution to protect these environments.

Thankfully, SDP, also known as the “black cloud,” specifies the security perimeter based on the software and not the hardware. This allows for increased security by masking the infrastructure of companies on the internet. 

SDP solutions still allow access for authorized users but make the whole infrastructure invisible to the other users on the internet. So, SDP is a great way to ensure a virtual boundary around your online network structure. 

Final word

Network security solutions are diverse and not every solution might be fully applicable to a company’s network structure. The whole issue of suitability depends on the infrastructure type, the use of cloud computing, and other factors. That’s why it is important to know about several solutions so you can choose the right one.

We listed the five most relevant and well-known solutions here, but remember, not a single solution can ensure complete security. So you may have to use more than one for different purposes. But one thing is sure; all of these solutions are great at what they do, and they are definitely necessary.