content provider servers. But please note that anonymity or extensive internet security might not be achieved by using an open proxy server alone.

Proxy vs NAT

The main difference between a proxy and a NAT lies in the layers in the OSI Reference Model in which they operate. A proxy works mostly in layer 7 of the OSI Reference Model. And, a NAT works in layer 3. As they operate in two different layers in the OSI Reference Model, their configuration also differs.

Configuring the gateway is sufficient for NAT. But for a proxy, the destination of each packet that the requesting client generates must be changed to the proxy server, so one has to take care of that.

I hope this helps. However, interested readers may find the following link useful: What is a transparent proxy server, and how does it work?

Security Fundamentals Practice Tests

The Security Fundamentals Practice Tests test one’s fundamental knowledge of cyber security. The practice tests are good for those who are preparing for various certification exams like the CCNA, CCNP, or CompTIA. They are also good for students and IT/security professionals who want to improve their understanding of cybersecurity.