Tools for resolving hostnames on a Windows network
Resolve host with LLMNR
ns.py computer-1
Resolve with NetBIOS
ns.py --netbios <IFACE> computer-1
Detect Responder with LLMNR or NetBIOS
ns.py --responder
ns.py --responder --netbios <IFACE>
This generates 2 random hostnames and performs a lookup using either LLMNR or NetBIOS. If both names resolve to the same host, Responder is likely running. It is usually enough just to check that a random hostname resolves at all.