> 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/analytics-alerts/alerts-by-name/uncommon-arp-cache-listing-via-arp-exe.md).

# Uncommon ARP cache listing via arp.exe

### Synopsis

| Field                | Value                                          |
| -------------------- | ---------------------------------------------- |
| Activation Period    | 14 Days                                        |
| Training Period      | 30 Days                                        |
| Test Period          | N/A (single event)                             |
| Deduplication Period | 1 Hour                                         |
| Required Data        | XDR Agent                                      |
| ATT\&CK Tactic       | Discovery (TA0007)                             |
| ATT\&CK Technique    | System Network Configuration Discovery (T1016) |
| Severity             | Low                                            |

### Description

The arp.exe command is used to display and modify entries in the Address Resolution Protocol (ARP) cache. Adversaries may attempt to use the command to discover remote systems they could compromise.

### Attacker's Goals

Adversaries may attempt to use the command to discover remote systems they could compromise.

### Investigative actions

Check whether the initiating process is allowed in your organization. (If the parent process is cmd.exe, check the process that spawned it).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/uncommon-arp-cache-listing-via-arp-exe.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.