Definition
Web application firewall or also known as WAF is an application firewall for HTTP applications. Basically a web application firewall is a gatekeeper for a website. WAF can protect your website and web application from cyber attacks such as cross-site-scripting (XSS), cross-site forgery, SQL injection, DDoS, and others.
The WAF system will monitor and filter the incoming traffic to your web application. The web application firewall will analyze GET and POST requests sent over HTTP and HTTPS and then apply configured firewall rules to identify traffic. WAF will then block and deny access if it finds suspicious traffic or traffic that has an indication as a threat to website security.
Category
- Network-based WAF
In general, Network-based WAF is a firewall that utilizes hardware. Because it is installed locally, this system can minimize the amount of latency. Network-based WAF will usually require high costs, storage, and maintenance for physical devices.
- Host-based WAF
Host-based WAF is deployed directly to the hosting server and can be integrated into application code. This category of WAF offers more customization capabilities.
- Cloud-based WAF
Cloud-based WAF is very easy to implement. Cloud-based WAFs typically offer turnkey installations to help direct traffic.
Profit
1.Protecting company and customer data
Hackers attack corporate websites with the aim of obtaining sensitive data. They can use this data to commit fraud, sell it to unauthorized parties, or even extort money.
2. Protect business reputation
Experiencing a data breach will have a bad impact on your company’s reputation. People tend to find it difficult to trust because companies cannot protect important data, whether belonging to customers, employees, even personal data belonging to the company itself.
3. Avoid lawsuits
The loss of sensitive information experienced by customers can bring serious problems to the company. In addition to losing your reputation, you will also be subject to lawsuits and have to pay a number of fines. With a good web security system, companies can avoid data breaches.
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