"Recommendation: Block Port 5357/tcp on the perimeter firewall immediately. The exposed WS-Discovery service allowed for the enumeration of the primary Domain Controller hostname ('LEDGER-DC01') and internal network topology without authentication."
wsddebug.js or wsdump (from impacket)
: Attempt to browse the port via HTTP. While it may not serve a traditional webpage, it may respond with XML data or SOAP responses that reveal device identity. Network Context