Access Node-Red in AWS EC2 Windows Instance

AWS has its own firewalls and then there is the Windows firewall. All will probably need configuring to allow port 1880 through.

However, please do take note of recent hacking and check out the security recommendations in the FAQ's and the docs.

It is recommended that you use a reverse proxy if you are going to make it available over the Internet. Better still, only make your user endpoints accessible and hide the Editor behind a security service such as Cloudflare Zero Trust, ZeroTier or NGROK. These services could also protect your user-facing endpoints as well if you like.

And, of course, everything must also be protected with TLS and the editor with a user login of some kind (which most security services can provide or you can use your proxy with another tool).