Web Application Firewall (WAF)
What are WAF solutions?
A Web Application Firewall (WAF) is a security layer that protects web applications against cyberattacks carried out via HTTP/HTTPS traffic. The WAF analyzes every request directed at the application and automatically blocks attempts to exploit vulnerabilities as well as suspicious behavior before they reach the organization's infrastructure.
WAF solutions protect against threats such as SQL Injection and Cross-Site Scripting (XSS) attacks, the exploitation of known vulnerabilities, malicious bots, and other threats targeting the application layer. This enables organizations to mitigate the risk of data breaches, application takeovers, and disruptions to online services.
The scale of threats in numbers
Key features of WAF solutions
Protection against web application attacks – detection and blocking of attacks such as SQL Injection, Cross-Site Scripting (XSS), Remote Code Execution, and other attempts to exploit application vulnerabilities.
OWASP Top 10-compliant protection – securing applications against the most common and critical threats identified by OWASP.
Application and API Protection – monitoring traffic directed at both web applications and APIs, which are increasingly becoming targets of cyberattacks.
Automatic threat detection and blocking – real-time analysis of HTTP/HTTPS requests and stopping malicious traffic before it reaches the protected application.
Bot Management – identifying and mitigating the activity of malicious bots responsible for, among other things, credential stuffing, scraping, automated login attempts, and the abuse of application resources.
Application traffic visibility and control – monitoring of traffic, events, and attack attempts, enabling IT and security teams to identify threats faster and adjust protection policies.
Why is a WAF a good solution?
Cloud-based or on-premises WAF?
A WAF can operate within either an on-premises infrastructure or a cloud-based model. The choice of the right variant depends primarily on the IT environment architecture, data control requirements, available team resources, and the scale of the applications being protected.
An on-premises WAF is deployed directly within the organization's infrastructure. It offers a high degree of control over configuration, security policies, and traffic processing. However, it requires appropriate hardware resources and a dedicated team to handle maintenance, updates, and system development. Infrastructure capacity may also need to be increased as traffic grows.
A cloud-based WAF enables protection without the need to build or maintain dedicated WAF infrastructure. The solution can scale rapidly in response to traffic fluctuations, while the provider handles platform updates and development. The cloud model can also be integrated with additional mechanisms—such as CDN, DDoS protection, DNS services, and bot management—to create a comprehensive security layer for internet-facing applications.
There is no single model that suits every organization. An on-premises solution is ideal where maximum control over the environment is the priority, whereas a cloud WAF is particularly attractive to companies seeking rapid deployment, flexible scalability, and a reduced burden on their internal IT teams.
We implement WAF solutions from leading vendors.
We select and implement Web Application Firewall solutions from leading cybersecurity technology vendors, tailoring them to an organization’s architecture, scale, and security requirements. We support both cloud-based and on-premises WAF deployments—covering everything from environment analysis and technology selection to security policy configuration, as well as the launch and optimization of protection measures.
