Final answer:
A Web Application Firewall (WAF) provides inbound protection at the perimeter for HTTP-based services by filtering and monitoring traffic to prevent attacks such as SQL injection and cross-site scripting.
Step-by-step explanation:
The service that provides inbound protection at the perimeter for HTTP-based services is typically referred to as a Web Application Firewall (WAF). A WAF is designed to protect web applications by filtering and monitoring HTTP traffic between a web application and the Internet. It helps protect web applications from attacks such as SQL injection, cross-site scripting (XSS), file inclusion, and other security threats that could affect application availability, compromise security, or consume excessive resources.
WAFs are deployed in front of web applications and analyze bi-directional web-based (HTTP) traffic - detecting and blocking anything malicious. This type of cybersecurity solution is crucial in today's digital landscape, as it provides a layer of security that helps protect web applications from attacks before they reach the server.