> For the complete documentation index, see [llms.txt](https://edi9root.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://edi9root.gitbook.io/notes/docs/protocol-service/snmp-udp-161.md).

# SNMP (UDP/161)

{% tabs %}
{% tab title="Simple Network Management Protocol" %} <mark style="color:green;">**`SNMP`**</mark> is a protocol for monitoring and managing network devices, such as routers, switches, and IoT devices, enabling remote configuration and control. The current version, <mark style="color:green;">**`SNMPv3`**</mark>, enhances security but adds complexity.
{% endtab %}

{% tab title="Resources" %}

* [GitHub Onesixtyone](https://github.com/trailofbits/onesixtyone)
* [Manpage of SNMPD.CONF](http://www.net-snmp.org/docs/man/snmpd.conf.html)
  {% endtab %}
  {% endtabs %}

## Configuration files

```bash
> cat /etc/snmp/snmpd.conf | grep -v "#" | sed -r '/^\s*$/d'
```

## Footprinting

{% tabs %}
{% tab title="Interaction" %}

* **Querying OIDs using snmpwalk**

```bash
> snmpwalk -v2c -c public TARGET_IP <1.3.6.1.2.1.1.5.0>
> snmpwalk -v2c -c private TARGET_IP
```

* **Brute force SNMP secret string**

```bash
> onesixtyone -c /opt/useful/seclists/Discovery/SNMP/snmp.txt TARGET_IP
```

* **Brute force SNMP service OIDs using braa**

```bash
> sudo apt install braa
> braa <community string>@<TARGET_IP>:.1.*
ex. > braa public@TARGET_IP:.1.3.6.*
```

{% endtab %}
{% endtabs %}


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