> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/public-exposure/appsec-openstack-3.md).

# OpenStack Security groups allow ingress from 0.0.0.0:0 to port 3389 (tcp / udp) misconfiguration det

## Rule Details

|                        |                                   |
| ---------------------- | --------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_OPENSTACK\_3              |
| Category - Subcategory | Public Exposure - Sensitive Ports |
| Provider               | OTHER                             |
| Severity               | LOW                               |
| Framework              | Terraform, Terraform Plan         |

## Impact

In OpenStack, firewall rules are used to allow or deny traffic to or from a specific network or subnet. When you create a firewall rule, you can specify the destination IP address or range that the rule applies to. This allows you to control which traffic is allowed or denied based on the destination IP of the traffic.

## How to Fix

*Resource:* openstack\_compute\_secgroup\_v2

* *Arguments:* rule.to\_port + rule.from\_port \[source,go]

***

resource "openstack\_compute\_secgroup\_v2" "secgroup\_1" { name = "my\_secgroup" description = "my security group"

rule { from\_port = 3389 to\_port = 3389 ip\_protocol = "tcp"

* cidr = "0.0.0.0/0" } }

***


---

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