Website Firewall Protection

The baseline is a ruleset that recognises known attack patterns: SQL injection strings, cross-site scripting payloads, path traversal, command injection and the like. The OWASP Core Rule Set is a common foundation, and we adapt it so it catches attacks without flagging your legitimate traffic as hostile.

Beyond fixed patterns, the firewall watches behaviour: too many login attempts from one source, a client requesting pages far faster than a human could, or a sudden flood aimed at an expensive endpoint. These controls stop brute-forcing and application-layer denial of service that no signature would catch.

When a serious vulnerability is disclosed in a plugin or framework you use, there is a dangerous gap between the announcement and the moment you can safely update. A virtual patch is a firewall rule that blocks the specific exploit in that window, which is often the difference between a quiet week and a mass-exploitation incident.

Why virtual patching matters

Automated exploitation of a newly disclosed bug can begin within hours. If you cannot patch immediately, whether because of a change freeze, testing, or a vendor being slow with a fix, a virtual patch keeps you covered until you can. It is the single most underrated feature of a managed firewall.

Mass scanning and automated exploitation, most injection and scripting attempts, brute-force login attacks, bad bots, and known exploits against popular software. This is the bulk of hostile traffic to a typical site, and blocking it removes most of your day-to-day risk.

A firewall does not understand your business logic. If your checkout lets a user change the price, or your API returns another customer’s data when you change an ID, those requests look perfectly valid and sail straight through. A firewall reduces exposure; it does not replace secure code or a penetration test.

Traffic is routed through the provider’s network, which filters it before it reaches your server. This adds denial-of-service absorption and a content delivery layer, and it protects the origin server’s address. It suits most public sites and is quick to deploy.

The firewall runs on your own server, often as a module in the web server. It keeps traffic under your control and avoids routing through a third party, which some data-sensitive or regulated setups prefer. It needs more hands-on tuning and does not by itself absorb large volumetric floods.

We put the firewall in place, point your traffic through it, and confirm nothing legitimate breaks before we tighten the rules. The switch-over is planned so your visitors never notice.

A too-aggressive ruleset that blocks real customers is worse than useless, because you will turn it off. We watch the logs during onboarding and adjust, so the firewall blocks attacks and lets your genuine users, forms and integrations through cleanly.

The firewall generates alerts, and someone has to read them. Our monitoring reviews what is being blocked, spots a targeted campaign against you, and escalates to our 24/7 incident response team if the traffic suggests an active attempt rather than routine noise.

PCI DSS 4.0 requirement 6.4.2 expects an automated technical solution, in practice a web application firewall, in front of public-facing web applications that handle card data. Our deployment and monitoring records are built to evidence that control to an assessor.

A managed firewall supports ISO 27001 controls on network security and vulnerability management, and it demonstrates the kind of technical measure GDPR expects for protecting personal data. Where you are in scope of NIS2, it forms part of a defensible security baseline.

Attackers take username and password pairs leaked from other breaches and replay them against your login at scale, betting that some of your users reused a password. Rate limiting and bot detection cut this down from thousands of attempts an hour to a trickle that goes nowhere.

Within hours of a vulnerability being published in a popular plugin or framework, automated tools sweep the whole internet looking for sites that run it. The firewall recognises those probes and blocks them, which is why a well-covered site rarely becomes a statistic in one of these campaigns.

Bots copy your content, hammer your search and contact forms, and post spam through any endpoint that accepts input. Filtering these keeps your database clean, your bandwidth bill sane, and your forms usable for real people.