> 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/networking/appsec-pan-12.md).

# IPsec profile uses insecure authentication algorithms on Palo Alto Networks devices misconfiguration

## Rule Details

|                        |                                            |
| ---------------------- | ------------------------------------------ |
| Cortex AppSec Rule ID  | APPSEC\_PAN\_12                            |
| Category - Subcategory | Public Exposure - Encryption And Protocols |
| Provider               | OTHER                                      |
| Severity               | MEDIUM                                     |
| Framework              | Ansible                                    |

## Impact

This rule detects whether IPsec profiles in Palo Alto Networks devices use insecure authentication algorithms. Specifically, the rule checks that IPsec profiles do not use 'none', 'md5', or 'sha1' for ESP (Encapsulating Security Payload) authentication, as these algorithms are considered weak and vulnerable to attacks. Strong authentication algorithms are crucial for ensuring the confidentiality and integrity of IPsec VPN connections.

## How to Fix

*Resource:* panos\_security\_rule

* *Attribute:* disable\_server\_response\_inspection

To mitigate this issue, ensure that the disable\_server\_response\_inspection attribute is either set to 'false' or omitted in your panos\_security\_rule definitions. Disabling DSRI ensures that server responses are inspected, maintaining the efficacy of security policies.

Secure Code Example:

## In this example, explicitly setting disable\_server\_response\_inspection to 'false' or omitting it ensures that DSRI is disabled, and that server responses are inspected. \[source,go]

* name: Verify tests hosts: all connection: local tasks:
  * name: Security\_rule paloaltonetworks.panos.panos\_security\_rule: rule\_name: 'Test rule' ...
* ```
     disable_server_response_inspection: true
  ```

***


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