<sickyjim> hi all, I’m trying to run an app on port 80 instead of 1337 but when I change the port in config/env/production, the app launches but I can’t reach it from a browser :/
This could be caused by a couple of things. We’ll go through each and every one of them. If it’s still not working for you, leave a comment down below and I’ll update the list with more checks.
Port 80 < 1024
When running an application on a port < 1024, you’ll need
su access. These ports are “special”, and thus protected behind
Now please don’t run your application on sudo. In stead, run it on any port > 1024, and in your firewall forward port 80 to the chosen port. For this example I’ve chosen the default port
/sbin/iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 1337
Port in use
Something else might be using port 80. Common ones are:
- Apache –
sudo apachectl stop
- Nginx –
nginx -s stop
- Skype – preferences > Advanced: Change
Incoming connections port
If all else prevails, run the following command (for your OS) to find out what’s running on port 80:
sudo lsof -i ':80'
netstat -tulpn | grep :80
It might also be SPI firewall protection blocking your application from functioning. You can read more about that here: SPI Firewall protection on router.