# Install Debian on Oracle Cloud

## Debian Image
To set up a (ARM64-based) Debian OS on Oracle Cloud, download the [Generic Cloud qcow2 image](https://cloud.debian.org/images/cloud/bookworm-backports/daily/).

### Upload the image to the storage bucket

### Import it as a Custom image
Image type: QCOW2
Launch mode: Native mode

### Edit image details
Compatible shapes: VM.Standard.A1.Flex

### Edit image capabilities
Fireware: UEFI_64
Launch Mode: Custom
Consistent volume naming: Disabled


## Create compute instance

### Image and shape
My Images: debian-12-backports-genericcloud-arm64
VM.Standard.A1.FlexAlways (Free-eligible)

### Primary VNIC IP addresses
Check IPv6 Address, IPv4 should be already checked.
Automatically assign IPv6 addresses from prefix

### Upload public key files (.pub)

### Boot Volume
Use in-transit encryption

## Virtual cloud networks
Virtual cloud networks > vcn > Security List Details

### Ingress rules
Stateless | Source | IP Protocol | Source Port Range | Destination Port Range | Type and Code | Allows | Description
------- | ------- | ------- | ------- | ------- | ------- | ------- | -------
No | 0.0.0.0/0 | ICMP | 3, 4 | ICMP traffic for: 3, 4 Destination Unreachable: Fragmentation Needed and Don't Fragment was Set |  | 
No | [IPv4 CIDR Block] | ICMP | 3 | ICMP traffic for: 3 Destination Unreachable |  | 
No | ::/0 | IPv6-ICMP | 2 | IPv6-ICMP traffic for: 2 Packet Too Big |  | 
No | [IPv4 CIDR Block] | ICMP | 8 | ICMP traffic for: 8 Echo |  | 
No | [IPv6 Prefix] | ICMP | 8 | ICMP traffic for: 8 Echo |  | 
No | 0.0.0.0/0 | UDP | All | [Wireguard Port] |  | UDP traffic for ports: [Wireguard Port]  |  | 
No | [Wireguard Subnet]/32 | TCP | All | [SSH Port] |  | TCP traffic for ports: [SSH Port]  |  | 
No | [IPv4 CIDR Block] | TCP | All | All |  | TCP traffic for ports: All |  | 
No | [IPv6 Prefix] | TCP | All | All |  | TCP traffic for ports: All |  | 

### Egress rules
Stateless | Source | IP Protocol | Source Port Range | Destination Port Range | Type and Code | Allows | Description
------- | ------- | ------- | ------- | ------- | ------- | ------- | -------
No | 0.0.0.0/0 | 	All Protocols | | | | All traffic for all ports |  | 
No | ::/0 | 	All Protocols | | | | All traffic for all ports |  |