Question about setting up port for HTTP server

Hey!

To allow access to your HTTP server running on a private IP (10.124.0.2) on port 8000 and make it accessible via the public IP of your droplet, you’ll need to set up similar iptables rules as you did for your TCP server, but specific to the HTTP service’s port.

Based on the iptables rules you’ve provided for your TCP server, here are the analogous rules for your HTTP server running on port 8000:

1. PREROUTING rule to forward the incoming traffic on port 8000 to your internal IP 10.124.0.2 on the same port:

   iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 8000 -j DNAT --to-destination 10.124.0.2:8000
   

2. POSTROUTING rule to masquerade the outgoing packets:

   iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
   

   Note: The MASQUERADE rule you’ve already set should cover this, so you might not need to add it again.

After applying these rules, try accessing your HTTP server using http://<public-ip>:8000/. If it’s still not accessible, here are a few things to check:

• Firewall: Ensure there are no additional firewall rules blocking access to port 8000. If you’re using ufw or another firewall, you might need to allow traffic on port 8000.

  ufw allow 8000/tcp
  

• HTTP Server Configuration: Make sure your HTTP server is configured to listen on 10.124.0.2:8000. You can check this by accessing the HTTP server directly from the droplet itself or by checking the server’s configuration files.

• Check HTTP Server Logs: The server logs might provide insights into why the requests are resulting in 404 errors. It could be related to the server’s configuration or the requested resources not being available.

Best,

Bobby