Tcp Port 5357 Direct

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 .

tasklist | findstr <PID> Legitimate owners will be svchost.exe (with WSD-related flags) or a printer driver process. tcp port 5357

: Don’t panic if you see port 5357 open. Verify it’s associated with a printer or discovery service. If it’s open on a random workstation with no printers nearby and strange traffic patterns, investigate further. This article explores what TCP port 5357 is,