2 entries are registered on port 1500. It is a registered port (1024–49151) — IANA records an assignee, but nothing stops other software from listening here, which is why the number carries more than one entry.
services registered on this number
2 transports in use
entries encrypted on the wire
1 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :1500 | NetGuard GuardianPro Remote Management | TCP | Security | caution | 12.7k |
| :1500 | VLSI License Manager | TCPUDP | System | safe | 0 |
Port 1500 is typically used for remote management of NetGuard GuardianPro firewalls based on NT4 systems. This port facilitates administrative access, configuration management, and real-time monitoring of firewall status. Designed for legacy environments, it enables system administrators to remotely maintain security policies and respond to network events efficiently.
port 1500 as NetGuard GuardianPro Remote Management →Port 1500 is assigned to the VLSI License Manager service.
port 1500 as VLSI License Manager →The registry says what 1500 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.
ss -ltnp | grep ':1500\b'lsof -nP -iTCP:1500 -sTCP:LISTENnetstat -ano | findstr :1500On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.
A port number is not a service. Anything may listen on 1500 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.
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