1. Install RINETD:
   sudo apt update && sudo apt install rinetd
2. Edit the file /etc/rinetd.conf. Like for example to bind port 80 to Google can use (bind connect):
   0.0.0.0 80 216.58.207.142 80
3. Restart the service with
   sudo service rinetd restart
   (ss -antp | grep "80") to confirm.
4. This way everyone that connects to our IP port 80 will be redirected to 216.58.207.142 port 80.