Port 5357 Hacktricks -

Often, the service returns Microsoft-HTTPAPI/2.0 .

The listener captures or relays the NetNTLM hash to another service (like SMB or LDAP) to gain unauthorized access. Defensive Measures and Hardening port 5357 hacktricks

The machine on Port 5357 had just introduced itself. It wasn't just a workstation; LEDGER-DC01 was a Domain Controller. The most sensitive machine in the entire infrastructure, the keys to the kingdom, was responding to anonymous queries on a port that should have been firewalled. Often, the service returns Microsoft-HTTPAPI/2

Details about the operating system and service versions. It wasn't just a workstation; LEDGER-DC01 was a

, a Microsoft service designed to let devices like printers and scanners "plug-and-play" over a network. While helpful for office efficiency, it was a known Information Disclosure

During the internal phase of a penetration test, Port 5357 helps map the active network topology. By listening to WSD broadcast requests or querying the endpoints, an attacker can pinpoint high-value targets like domain controllers, print servers, and executive workstations without generating noisy traffic on traditional SMB ports (like 445). 3. NTLM Relay and SSRF Targets

Securing Port 5357 involves disabling unnecessary discovery protocols and restricting network access. 1. Disabling Network Discovery