Appendix

Terms

• Elastic Cloud Server (ECS): ECS provides secure, scalable, on-demand compute resources, enabling you to flexibly deploy applications and workloads.
• Elastic IP (EIP): EIP provides static public IP addresses and scalable bandwidths that enable your cloud resources to communicate with the Internet. You can easily bind an EIP to an ECS, BMS, virtual IP address, NAT gateway, or load balancer, enabling immediate Internet access.

• Nginx: Nginx is a lightweight HTTP server. It is a high-performance HTTP and reverse proxy server as well as an IMAP/POP3/SMTP proxy server. For details, visit http://nginx.org/en/.
• ModSecurity is an open-source cross-platform web application firewall (WAF). It can protect websites by checking the data received and sent by web servers. For details, visit http://www.modsecurity.cn/practice/.