# MDNS (Multicast DNS) Pentesting

description: Multicast DNS protocol resolves hostnames to IP addresses within small networks that do not include a local name server. It is a zero-configuration (zeroconf) service. It uses UDP. A default port is 5353.

### Enumeration <a href="#enumeration" id="enumeration"></a>

```shellscript
nmap -sU --script dns-service-discovery -p 5353 <target-ip>
```