Oracle has two layers of network protection:

1. VCN Security Lists

2. Network Security Groups (NSGs) – optional but often used

You need to check both.

1. Go to the Oracle Cloud dashboard

2. Navigate to Networking > Virtual Cloud Networks

3. Click on your VCN → Go to Security Lists

4. Check your subnet’s security list

5. Make sure it has Ingress rules like:

Source CIDR Protocol Port Range

0.0.0.0/0 TCP 80

0.0.0.0/0 TCP 443

if you already have this:

Check NSGs (if used)

• If your instance is part of a Network Security Group, you also need to allow traffic in there.

• Go to Networking > Network Security Groups

• Choose the NSG attached to your instance

• Make sure the same port 80/443 ingress rules exist there too

Check Your Public IP

1. Make sure you're using the correct public IP address (not the private one)

2. Run curl http://your_public_ip from your local machine. Still not working? Probably still a firewall issue.

Tell me if you have anymore info