Web Application Firewall, LB Solutions
Web Application Firewall (WAF) filters, examines, and blocks all HTTP traffic to and from a web application. The difference of a WAF product from a normal firewall is that while ordinary firewalls serve as a security gateway between servers, the WAF product can filter the content of the web application that it wants. By examining HTTP traffic, it can prevent attacks caused by security weaknesses such as SQL injection, XSS, and security misconfigurations.
Load Balancer is a technology for sharing between two or more computers, processors, hard disks or other resources. Using this technology, the best resource utilization, the highest throughput, lowest response time can be achieved; the overload that may occur can be avoided.