Portqry Examples Here
portqry -n app01 -p tcp -e 443 if %errorlevel% equ 0 ( echo Service OK ) else if %errorlevel% equ 2 ( echo Firewall likely blocking ) | Switch | Purpose | |--------|---------| | -n | Target name or IP | | -p | tcp or udp | | -e | Single port number | | -r | Port range ( start:end ) | | -t | Timeout (ms) | | -rpc | Query RPC endpoint mapper | | -ldap | Send LDAP bind request | | -smb | SMB negotiation | | -dns | DNS query over UDP | | -o | One-line output | | -v | Verbose | | -l | Local machine mode |
| Code | Meaning | |------|---------| | 0 | Port LISTENING or service found | | 1 | Port NOT LISTENING (RST or ICMP unreachable) | | 2 | FILTERED (no response after retries) | | 3 | Command-line error | | 4 | Unsupported protocol or service type | portqry examples
Portqry remains irreplaceable for , UDP service validation , and zero-install environments where Nmap is not allowed. portqry -n app01 -p tcp -e 443 if