In the context of using node-red, a 404 error is occasionally seen on actual usage too. Especially when editing flows and having a typo in a url somewhere it’s what will make you notice you’ve made a mistake. Is this handled somewhere, or will those connections be dropped too? Note that I’m on mobile and have only quickly scanned the fail2ban configuration. I certainly agree with blocking it, seeing a lot of interesting attempts on my CentOS cloud server with a similar fail2ban setup, but I wonder if it’s best in a node-red context that wouldn’t purely run flows in production.