Tcp Port 5357 ~repack~ May 2026

This article explores what TCP port 5357 is, why it’s open, how it works, and when you should be concerned about its activity. TCP port 5357 is officially registered by the Internet Assigned Numbers Authority (IANA) for use by WSDAPI (Web Services Dynamic Discovery API) and specifically for WSDAPI Print Services .

However, on high-security networks or servers, it’s prudent to disable the WSD publishing service. As always, monitor open ports with a firewall and keep network devices (especially printers) updated—since printers are often the forgotten, vulnerable edge of enterprise security. tcp port 5357

nmap -p 5357 <target-IP> TCP port 5357 is a legitimate, useful port that powers seamless device discovery and printing on modern networks via the WSDAPI. For most users and small businesses, it poses no significant threat and disabling it will degrade the plug-and-play experience. This article explores what TCP port 5357 is,