What Is a Next-Generation Firewall (NGFW)?

As the risk panorama continues to increase and evolve, particularly within the cloud, conventional firewalls are falling behind and are unable to ship safety at a scale firms and people want.

Users working with delicate information want specialised firewalls that may be multifunctional, programmable, work along with antivirus software program, and be clever when scanning by means of information. So are next-generation firewalls the reply?

What Is a Next-Generation Firewall?

A Next-Generation Firewall (NGFWs) screens community visitors to safeguard a corporation from any risk, exterior or inside.

An NGFW is a firewall able to making use of entry management at stage 7. A stage 7 firewall is merely a sort of firewall that operates on the applying layer, permitting superior traffic-filtering insurance policies. This additionally signifies that these kind of firewalls perceive the completely different functions that generate visitors that passes by means of them. NGFWs accomplish this by utilizing a number of methods that previously have been finished by quite a few applications.

An NGFWs not solely block malware and scan packages going by means of your units and the cloud (which is more and more contaminated with cloud apps carrying viruses), however additionally they assume, analyze, and replace paths to provide the flexibility to evolve with cyber threats and hold your community safe.

Is an NGFW Hardware- or Software-Based?

NGFW know-how is dynamic in how it may be applied in a system or a cloud infrastructure. Some NGFWs might be put in as {hardware} or be applied as software program.

It is essential to notice that an NGFW will also be a cloud service, and are due to this fact typically known as a cloud firewall or (mistakenly) as Firewall-as-a-Service (FWaaS).

FWaaS vs. NGFW vs. Cloud Firewalls

A cloud firewall is a advertising and marketing time period, which has brought about a lot of confusion since there are various different types of cloud firewalls. A cloud firewall could possibly be thought-about a blanket time period for merchandise that function cloud firewalls, reminiscent of with an NGFW or an FWaaS.

So what’s an FWaaS, and the way does it depend on an NGFW? FWaaS is a service that gives a cloud firewall, amongst different cloud safety providers. So the place does the NGFW slot in? An FWaaS is a cloud-hosted safety resolution a part of an IT infrastructure that may embody a next-generation firewall characteristic, which is principally an NGFW. An FWaaS is cloud-hosted in order that’s why they’re each primarily related to cloud safety.

However, whereas an FWaaS is hosted within the cloud, an NGFW might be hosted wherever.

Many software program and providers overlap in capabilities and capabilities. This is especially true in terms of cloud safety, for instance with Cloud Workload Protection Platforms (CWPP) and Cloud Access Security Broker (CASS): each defend the cloud, and each present cloud firewall providers.

Cloud cybersecurity is so advanced that there’s now a tailor-made resolution for each downside; that’s the reason there are such a lot of forms of firewalls and antiviruses with completely different names that appear to do the identical.

What Modules Make Up an NGFW?

Within NGFW, a number of functionalities are included. The most essential are:


This contains fundamental firewall performance, which on this case is normally related to the power to arrange VPN tunnels (IPSec, GRE) or enable distant entry by means of a VPN consumer.

Application Control

Application management is a method to assist organizations outline and apply safety and routing insurance policies to visitors primarily based on the supply of the circulate.

Deep Packet Inspection (DPI)

A DPI inspects all packets going by means of your community for supply, IP tackle vacation spot, vacation spot port, and so on.

Intrusion Prevention System (IPS)

This performance permits the firewall to detect assaults by consistently scanning all visitors data and evaluating to recognized threats. This detection relies on signatures, during which the producer releases assault patterns as new cyberattacks are detected. Generally, these signatures are up to date mechanically, so the pc is normally at all times updated with the newest variations.

Web Filter

The WebFilter is aimed toward controlling URLs accessed by customers. Usually, the firewall producer will keep a database the place URLs are categorized into completely different sections, reminiscent of social websites, information websites, private financial institution websites, grownup websites, and so on. These classes can enable or deny visitors to the pages that belong to that class.

Some firewalls, like Tinywall, will let you personalize lists and create a blacklist. An NGFW will at all times embody this operate since each firm and particular person might want to tailor its strategy to internet filtering primarily based on their safety considerations.

Identity Awareness

An identification consciousness characteristic will assist the NGFW determine a person behind an IP generated by a connection. Usually, it’s finished by integrating it with a person listing. Such a characteristic will even make extra advanced entry guidelines as a substitute of permitting a particular IP or community.

What Other Things Can an NGFW Do?

While the options talked about above are the first capabilities of an NGFW, some additionally embody:

  • Antivirus: Because an NGFW consistently scans every thing, if it detects a virus from a trusted website or utility, it should block the file. A typical firewall is not going to do that except it is paired with an antivirus. Not all NGFWs will embody an antivirus characteristic so be sure you search for it as it would prevent cash on the long term.
  • Anti-spam: If your e mail server is behind the NGFW, it should work as anti-spam safety too.
  • Quality of service (QoS): The NGFW can apply QoS guidelines, like max and assured bandwidth, charge management, and so on.
  • SSL Inspection: With this performance, you possibly can break the SSL tunnel of protocols reminiscent of HTTPS and examine encrypted visitors.

What Is the Future of NGFWs?

More and extra firms run some form of workload within the cloud, which suggests the kind of firewalls a corporation wants have to be tailor-made to its particular safety wants. NGFW (or FWaaS with next-generation firewall capabilities) do precisely that: they are often programmed to satisfy any requirement a firm may need. Naturally, all new firewall options that work within the cloud will work for non-cloud customers.


Related Posts