I actually would argue against this idea, it is quite resource intensive to keep your sites up-to-date with latest security patches (think something like webservers, openssl, tls cipher suites ...). Putting your site behind a CDN makes you not so vulnerable to these attacks.
Hmm it is not working for MacOS :( I understand that linux and macos network stacks differ. However when I ran the test it and observed the network via wireshark, it seems that my machine does not send a request containing the same source port as the destination port. It just skips it, but anyway MacOS seems to have the same increasing sequential port behavior
