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Approach WAF, an innovative technology combined with extended expertise

WAF, an essential security tool

Web Application Firewalls (WAF) can monitor, detect, and block web-based attacks by inspecting the content of the traffic so as to improve the security of your web applications. They are complementary to traditional network firewalls that can only block traffic based on its origin and destination..

"We have drawn on our in-depth cybersecurity expertise and methodology to develop an innovative and unique WAF that provides proven effective security at limited license cost. "

Approach WAF, much more than a traditional WAF

Traditional WAFs often fail in practice due to “bad” implementation and deployment :

  • They are black boxes. They contain obscure one-size-fits-all "magic rules" that generate unexplainable false positives. This often leads to the deactivation of most of the rules that are supposed to protect the application.
  • They allow most traffic and expect you to explicitly add most of security. As a result, security is generally very limited and does not cover the full spectrum of the content.
  • They lack an integrated methodology to manage their configuration, deployment and maintenance. As a result, WAF configurations are often not in line with the applications.

Approach WAF offers a completely different and innovative approach to ensure proven effective security:

  • By default, the “deny all” rule is applied to all traffic. Security is therefore extended to the full spectrum of the content; no part could be mistakenly “forgotten”.
  • Rules are activated to allow expected traffic only. Our WAF includes many preconfigured rules that will suit most of your applications. The Approach WAF is transparent and open and can therefore be easily used with full knowledge of the purpose of such rules.
  • We have developed a fully integrated methodology to ensure proper implementation and maintenance.

Here is an highlight of our major differentiators compared to traditional commercial WAFs and the main Open Source solution:

 Logo Approach Waf
Approach WAF
Logo Approach Waf
OWASP ModSecurity
Core Rule Set
commercial WAF's
Approach WAF Logo Attack Pattern detection
Approach WAF Logo Default "Deny all"
Approach WAF Logo Behavioural & history analysis
Approach WAF Logo Scalability (H&V)
Approach WAF LogoMulti-environment
Approach WAF Logo Transparent and open
Approach WAF LogoGood Practice enforcement
Approach WAF LogoComplete Management Framework

Approach WAF, more value for less money

The licence cost is minimal by relying on open-source technologies. You mainly pay for security expertise.
Furthermore a “deny all” philosophy translates into an immediate level of security. In other words, more security for less money.

Approach WAF, two editions for two different needs

Approach WAF is available in two versions coming with the same modules and the same security features.
The difference lies in the pre-configuration and in the customization capabilities.

Advanced Edition

Standard Edition
Approach WAF Logo Security Features  
Approach Security Framework
Approach Management Framework
Default "Deny all" (H&V)
Full control on white listing
Approach WAF Logo Deployment & Management  
Redundant & Scalable
Easy 3rd party integrationt
Transparent and open
Approach WAF Logo Full Managed servicesOptionalOptional
  • The “Advanced Edition” is intended for datacentres and large companies. It is entirely customizable and aims to be tightly integrated in your environment with your own technologies. This version is preconfigured with the “deny all” philosophy and white listing must be explicitly activated.
  • The “Standard Edition” is a standalone virtual machine, with pre-activated security rules that will allow most common traffic. The operating system and the core components cannot be modified.

For both versions, you can subscribe to a service to have Approach managing the WAF and its evolution.

Approach WAF, from a custom implementation to a product

Client references

For more than 8 years now, Approach has been providing application security consulting, support services and security watch services to bpost

"For more than 10 years now, Approach has been helping NATO, maintaining an extremely high level of security for applications managing restricted information".   Dimitris Stavrakis, Head of NATO Standardization Office

LuxTrust - Approach

"Thanks to Approach, we were able to provide our partners and customers with a solution combining high security and smooth integration."  Stéphane RIES, Deputy CEO & COO, LuxTrust

"The Approach WAF solution is protecting our key eBanking applications already for some years. The tailor-made solution meets our needs and it follows the technological evolutions (API, cloud, ...). The high security level of the solution combined with the responsive support team makes this a solid and effective service."  Mathieu Desmet, CIO CPH Bank

" Approach is providing us with their solution as managed service since 2007. The low cost adapted to a start-up was the key decision factor, but the very high availability we had during huge attacks proved the maturity of the product. It smoothly supported our migrations over the years (development frameworks, cloud infrastructure, ...), without being distracted by security concerns and technical issues. " Frederic Tais, ATLAS Expat Operations Manager

Publications & events

Published on 04 April 2018

Rise of DDoS Amplification Attacks

Since the end of February 2018, we’ve seen a rise of DDoS Amplification attacks, with in some case more than 1Tbps of traffic generated. ...
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Published on 12 October 2018

How do you deal with low risk level vulnerabilities ?

Nothing should be left behind when speaking in terms of security...  A story by David Bloom, Cyber-Security Consultant at Approach.
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Published on 31 October 2018

ModSecurity extensions by Approach Belgium

Download the additional input filters developed by Approach for ModSecurity.  
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Published on 21 January 2019

Why should your organisation go for ISO27001 certification?

Digitised services are exposed to a broad spectrum of cyber-threats attacks. Obtaining the ISO27001 certificate can be a...
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Brussels Expo (2 days )

Approach at Infosecurity Belgium 2019

Join us at Infosecurity on March 20th and 21st !
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Published on 10 January 2019

Approach is nominated Trends Gazelles 2019

This nomination is a nice recognition of our sustainable...
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Web Contest (19 days)

Master CyberSecurity Tournament: Approach CTF is ready!

The students in Master CyberSecurity will have 19 days to find more than 20 flags. 
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Our approach to cyber-security

Our customers benefit from the expertise and talent of our people, combined with pragmatic and proven methods and the efficiency brought by our assets:


Expertise and talent

Since 2001 we have applied our experience in cyber-security gained in various industries, from small to large businesses. Our people are seasoned, certified professionals who continuously improve and extend their knowledge.


Pragmatic and proven methods

We rely on most recognised, easily auditable and adopted standards and good practices and apply them pragmatically. We always tailor our approach to your particular context, needs and organisation culture.


Asset-based approach

We make use of the most advanced and reliable tools and solutions to support our services. This enables us to be more efficient during delivery, enforce the use of standard auditable methods and provide transparency about our achievements and your results.

Certified professionals
Success stories
Year of establishment
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