**6. Performance analysis**

### **6.1 Single-tier network architecture**

The first framework was structured and implemented in the form of a single inbound and exit gateway. This mimicked the single-tiered level system including standard system design, directing the interfacing with an online interface containing the front end and back end. This simulated the standard cloudbased condition having a basic standard system configuration actualized in a server farm with hardware devices mentioned in the setup environment above (**Figure 6**).

Using the standard design, single-tiered architecture, multi-vector DDoS attacks were executed as network floods and volumetric and application layer 7 attacks. These critically overloaded and degraded the computing systems leading to access issues for legitimate users. Logs and data gathered for each attack are displayed below for reference (**Figures 7**–**9**).
