How To Use Portqry !!link!! Access

TCP port 80 (http service): LISTENING If the web server returns an HTTP response, you might also see:

| Result | Meaning | |--------|---------| | | A service is bound to the port and responded. | | FILTERED | No response received (firewall drop, host down, or no service). | | NOT LISTENING | Reached the host, but no service on that port (RST received). | Pro tip: FILTERED does not always mean a firewall—the service may be stopped or the IP unreachable. Advanced: Query Well-Known Services PortQry can query specific service endpoints like LDAP, NetBIOS, or SQL Server using the -o flag with known service names: how to use portqry

When a service won’t connect, the first question is often: “Is the port even open?” While tools like telnet and Test-NetConnection work, PortQry offers a more detailed, faster, and scriptable alternative—especially for Windows administrators. TCP port 80 (http service): LISTENING If the

PortQry (and its successor, PortQryUI) reports not only if a port is listening, but also which service is behind it. PortQry is a command-line utility that queries a target computer’s TCP and UDP ports. Unlike a basic ping or telnet, PortQry attempts to follow the application protocol (like HTTP, DNS, or NetBIOS) to confirm a service is truly responsive. | Pro tip: FILTERED does not always mean

portqry -n dc01 -p tcp -o ldap Other built-in service names: netbios , smtp , http , rpc , sql . This is a PortQry superpower: