![]() Most services don't respond to an unformatted user datagram that's sent to them.If there's no response to a directed datagram, the target port might be FILTERED.This result may not be accurate for one or both of the following reasons: Typical port scanning tools report that the port has a LISTENING status if the target UDP port doesn't return an Internet Control Message Protocol (ICMP) "Destination unreachable" message. ![]() ![]() To get the PortQryUI tool, see PortQryUI - User Interface for the PortQry Command Line Port Scanner.Īpplies to: Supported versions of Windows PortQry tests and results PortQryUI has several features that can make using PortQry easier. You can download a separate tool, called PortQryUI, that includes a graphical UI for PortQry.
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