2 entries are registered on port 8443. 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 |
|---|---|---|---|---|---|
| :8443 | Plesk/Tomcat SSL | TCPtls | Web Services | caution | 14.2k |
| :8443 | HTTPS (alternate port) | TCPUDPtls | Web Services | caution | 0 |
Port 8443 is commonly used for secure web-based administrative interfaces such as the SW Soft Plesk Control Panel, Apache Tomcat Manager over SSL, and Promise WebPAM SSL management. Typically, it facilitates encrypted communications for web applications running outside the default HTTPS port (443), enabling secure management and service access without conflicting with standard HTTPS content.
port 8443 as Plesk/Tomcat SSL →Port 8443 commonly serves HTTPS web interfaces, including application servers and management consoles; the IANA label is PCsync HTTPS.
port 8443 as HTTPS (alternate port) →The registry says what 8443 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 ':8443\b'lsof -nP -iTCP:8443 -sTCP:LISTENnetstat -ano | findstr :8443On 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 8443 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.
contribute an entry