OCI Networking guide: how to Connect to Instance via Public IP Despite Security Lists Allowing Traffic
I'm confused about I'm stuck trying to I'm not sure how to approach I'm working with an scenario where I want to connect to my OCI compute instance using its public IP address... The instance is set up with a public IP, and the relevant security lists allow inbound traffic on port 22 for SSH access. However, attempts to SSH into the instance yield a 'Connection timed out' behavior. I've verified that the instance is running and has no errors. Here’s the relevant part of my Terraform configuration for the network: ```hcl resource "oci_core_virtual_cloud_network" "vcn" { compartment_id = var.compartment_id cidr_block = "10.0.0.0/16" display_name = "my_vcn" } resource "oci_core_instance" "instance" { availability_domain = data.oci_identity_availability_domains.ads.availability_domains[0].name compartment_id = var.compartment_id display_name = "my_instance" shape = "VM.Standard2.1" create_vnic_details { subnet_id = oci_core_subnet.my_subnet.id assign_public_ip = true } } resource "oci_core_subnet" "my_subnet" { compartment_id = var.compartment_id vcn_id = oci_core_virtual_cloud_network.vcn.id cidr_block = "10.0.1.0/24" availability_domain = data.oci_identity_availability_domains.ads.availability_domains[0].name display_name = "my_subnet" prohibit_public_ip_on_vnic = false } ``` The security list attached to the subnet looks like this: ```json { "ingressSecurityRules": [ { "protocol": "6", "source": "0.0.0.0/0", "tcpOptions": { "destinationPortRange": { "min": 22, "max": 22 } } } ] } ``` I've also checked the route table and confirmed that it has a rule directing traffic to the Internet Gateway. The instance's public IP seems to be correctly assigned as well. To troubleshoot, I tried the following steps: 1. Confirmed that the public IP can be pinged (it times out). 2. Reviewed the firewall settings on the instance itself to ensure that SSH is allowed. 3. Verified that the instance has a valid public IP and that I'm using the correct one to connect. Despite all this, the connection still times out. Is there anything I'm missing in my configuration or any additional settings I should check? This is happening in both development and production on Debian. Any ideas what could be causing this? I'd love to hear your thoughts on this.