I've used nearly all of them include the offering Simon mentioned.
I'm currently using this node...
On my Echo Dot I had to run the following as I didn't want to start Node-RED as root.
It routes port 8980 to port 80.
You need to enter 8980 as the port number in the amazon-alexa-hub
You need to run these commands on your Pi if your using a WiFi connection.
sudo apt-get install iptables-persistent
sudo iptables -I INPUT 1 -p tcp --dport 80 -j ACCEPT
sudo iptables -A PREROUTING -t nat -i wlan0 -p tcp --dport 80 -j REDIRECT --to-port 8980
sudo netfilter-persistent save
sudo netfilter-persistent reload
Or these commands if you're using Ethernet CAT cable
sudo apt-get install iptables-persistent
sudo iptables -I INPUT 1 -p tcp --dport 80 -j ACCEPT
sudo iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8980
sudo netfilter-persistent save
sudo netfilter-persistent reload
