You're straight up embarrassing yourself on a forum full of highly technical people. I won't be surprised when you delete your comments.

You're confidently conflating two very different things: basic IP spoofing that breaks TCP connections and the use of a reverse proxy to mask an IP address during communication. Let me explain why you're wrong and how the process actually works.

1. IP Spoofing for One-Way Traffic:

When you "spoof" an IP, you modify the source address in a packet to make it appear as if it came from somewhere else.

You're right that for a full TCP connection, the three-way handshake (SYN → SYN-ACK → ACK) won't complete because the response (SYN-ACK) goes to the spoofed IP, not to the actual sender. This is basic networking, and no one is arguing that.

2. Reverse Proxy Basics:

Here's where you get it wrong: a reverse proxy or intermediary server is not IP spoofing in the raw packet sense.

The reverse proxy establishes the connection with the target server on your behalf. It completes the handshake, relays data to/from the target, and forwards the responses back to you.

Your actual IP never touches the target because all the traffic appears to come from the proxy.

Simplified Flow:

VM (Google Voice) → VPN (Mullvad, paid with cash) → Reverse Proxy → Target Hotline

The target sees the reverse proxy's IP, not yours. The reverse proxy handles the replies and sends them back to your system.

3. Why This Works:

You only need to maintain a stable connection with the reverse proxy. The proxy takes care of everything else, including interacting with the target server or hotline.

This is not spoofing mid-connection traffic; this is using a relay to abstract your origin. It’s a fundamental networking concept used for load balancing, anonymity, and even services like Cloudflare.

4. Google Voice Context:

The call originates from a VM, using Mullvad to mask your real IP. If you route the call through a reverse proxy, the target hotline only interacts with the proxy's IP.

You maintain full two-way communication because the proxy handles and relays replies, ensuring nothing breaks.

TL;DR: You're incorrectly applying the concept of raw IP spoofing (which doesn't work for full communication) to a process that involves a reverse proxy or VPN, where the proxy legitimately completes the connection and forwards traffic. If you're a "network specialist," you should know this. The fact that you don't is what's truly embarrassing.

And now, I block you. I won't waste my time talking to morons who are so confidently incorrect.