Network security: flow chart of web firewall

This flowchart shows a simplified Web firewall process. The following is a brief description of each part:

Collect traffic data: This step includes collecting all traffic data entering the website, including inbound requests and data packets.

Analyze inbound requests: conduct in-depth analysis of inbound requests to identify potential threats and malicious behaviors.

Identify threats: use various detection methods to identify possible threats, such as SQL injection, XSS, CSRF, etc.

Record and report: record detected threats and abnormal activities, and generate security reports.

Firewall decision: according to the access control policy and the Web application protection rules, decide whether to allow or deny traffic through it.

Execute Web application protection: if traffic is allowed to pass, execute Web application protection rules, such as SQL injection and XSS protection.

Triggering alerts and logging: If malicious acts or threats are detected, an alert will be triggered, and relevant information will be recorded for further analysis.

Update and maintenance: regularly update rules and signatures, review logs, evaluate security policies, and ensure the security of Web applications.

This flowchart shows the workflow of a basic Web firewall. The actual Web firewall system may include more complex components and policies to deal with evolving network threats.