If you want to know how to enable TLS 1.3 on your macOS then you need to read this small guide.
By default TLS 1.3 is disabled to be used in macOS.
If you want to enable TLS 1.3 on your Macintosh, then you will have to perform the command shown below:
Enable TLS 1.3 on macOS terminal command:
sudo defaults write /Library/Preferences/com.apple.networkd tcp_connect_enable_tls13 1
If everything runs smoothly, TLS 1.3 should be enabled now.
If you run into issues, please let us know.
HTTPS performance has been made faster and safer for every user and every device. Transportation Layer Security (TLS) 1.3 protocol provides unparalleled privacy and performance compared to previous versions of TLS and non-secure HTTP.
You can check if your system is running TLS 1.3 via the SSLlabs.com site:
References on TLS 1.3: