Would you like a sample that extends PortQry’s functionality, or a side-by-side comparison with Test-NetConnection for automation?

PortQry (Port Query) is a command-line tool from Microsoft used to query open/closed/listening TCP and UDP ports on local or remote systems. It’s like a lightweight telnet / netcat but specifically designed for troubleshooting network connectivity, firewall rules, and service availability — without needing extra software on the target.

portqry -n 192.168.1.10 -p tcp -r 1:1024 | Status | Meaning | |--------------|---------| | LISTENING | A service is bound and accepting connections. | | FILTERED | No response (likely dropped by firewall). | | NOT LISTENING | Port closed, RST received (TCP) or ICMP unreachable (UDP). | Key Use Cases & Examples 1. Check if a web server is listening on port 443 portqry -n example.com -p tcp -e 443 Output: