Port 5357 !!top!! Jun 2026

If you do not need to discover network printers or share files, you can close the port by turning off "Network Discovery" in the Windows Control Panel > Network and Sharing Center > Advanced sharing settings . Description Protocol TCP (Transmission Control Protocol) Service Web Services on Devices (WSD) Alternative

It is extensively used by the WSD Port Monitor to discover network printers, monitor their status (like ink levels or paper jams), and send print jobs. port 5357

: Because it facilitates device discovery, it can reveal information about your network devices (printers, IoT) to anyone on the same network, which could be used for reconnaissance. If you do not need to discover network

A response might contain XML/SOAP metadata if the WSD service is active. port 5357