# 137/UDP, 138/UDP, 139/TCP (NetBIOS)

## nmblookup

```shell
nmblookup -A <target>
```

* -A = búsqueda por IP.
* \<target> = objetivo.

## NBTScan

```shell
nbtscan <target>
nbtscan <CIDR>
nbtscan -rv <CIDR>
```

* -r = utiliza el puerto local 137 para el escaneo (Microsoft Windows 95 responden solo a esto).&#x20;
* -v = modo verboso.
* \<target> = objetivo.
* \<CIDR> = Classless Inter-Domain Routing.


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