Port 5357 __exclusive__ -

If you do not rely on automatic network discovery (for example, on a server that does not need to discover printers), you can disable the associated services:

In 2021, a critical vulnerability known as shocked the IT world. While the Print Spooler service traditionally uses other ports (like 445), researchers discovered that the WSD service (Port 5357) could be leveraged to trigger the Print Spooler remotely. port 5357

Automated discovery of network hardware like printers and scanners If you do not rely on automatic network

New-NetFirewallRule -DisplayName "Block Port 5357" -Direction Inbound -LocalPort 5357 -Protocol TCP -Action Block port 5357

: It should only be accessible within your local network (LAN). It should never be exposed to the public internet.

sc stop WSDPrintService # if present sc config WSDPrintService start= disabled