So, what kind of devices and applications use port 5357? The answer lies in the realm of device management and automation. WSDP is commonly used in:
Whether you should block this port depends on your "Security vs. Convenience" balance. what is port 5357 used for
This is the Microsoft technology responsible for the "Network Map" feature you see in the Windows Network and Sharing Center. You know that visual diagram that shows your computer connected to a switch, which is connected to a router, which connects to the internet? That map is drawn using the traffic sent over Port 5357. So, what kind of devices and applications use port 5357
: Poorly configured printers may expose administrative interfaces over this port, potentially allowing unauthorized parties to view or manipulate print jobs. Should You Close Port 5357? Convenience" balance
However, by IANA (Internet Assigned Numbers Authority) conventions, port 5357 is officially, meaning it has no global standard—Microsoft’s WSD usage is the de facto dominant application.
: Open Control Panel > Network and Sharing Center > Advanced sharing settings and turn off "Network discovery" for your current profile.