# Firewall Rule

URL: https://developers.cloud66.com/v3/models/firewall-rule/

Firewall rules define network access controls for your servers. They specify which IP addresses, servers, or server groups can communicate on specific ports and protocols.

<Model>
    <ModelProperty name="id" type="integer">
        The unique identifier of the firewall rule.
    </ModelProperty>
    <ModelProperty name="from_ip" type="string">
        The source IP address or CIDR block that traffic originates from.
    </ModelProperty>
    <ModelProperty name="from_group_id" type="integer">
        The ID of the source server group that traffic originates from.
    </ModelProperty>
    <ModelProperty name="from_server_id" type="string">
        The UID of the source server that traffic originates from.
    </ModelProperty>
    <ModelProperty name="to_ip" type="string">
        The destination IP address or CIDR block that traffic is directed to.
    </ModelProperty>
    <ModelProperty name="to_group_id" type="integer">
        The ID of the destination server group that traffic is directed to.
    </ModelProperty>
    <ModelProperty name="to_server_id" type="string">
        The UID of the destination server that traffic is directed to.
    </ModelProperty>
    <ModelProperty name="protocol" type="string">
        The network protocol for this rule (tcp, udp, or icmp).
    </ModelProperty>
    <ModelProperty name="port" type="string">
        The port or port range for this rule (e.g., "80", "443", "8000-8999").
    </ModelProperty>
    <ModelProperty name="rule_type" type="string">
        The type of firewall rule (static, dynamic, or user).
    </ModelProperty>
    <ModelProperty name="comments" type="string">
        Optional comments or description for this firewall rule.
    </ModelProperty>
    <ModelProperty name="created_at" type="datetime">
        The date and time the firewall rule was created, in ISO 8601 format.
    </ModelProperty>
    <ModelProperty name="updated_at" type="datetime">
        The date and time the firewall rule was last updated, in ISO 8601 format.
    </ModelProperty>
</Model>

## Example

```json
{
  "id": 789,
  "from_ip": "192.168.1.0/24",
  "from_group_id": null,
  "from_server_id": null,
  "to_ip": null,
  "to_group_id": 123,
  "to_server_id": null,
  "protocol": "tcp",
  "port": "443",
  "rule_type": "user",
  "comments": "Allow HTTPS traffic from office network",
  "created_at": "2024-01-20T09:15:00Z",
  "updated_at": "2024-02-10T16:30:00Z"
}
```