Puerto42— Host Name Server
Puerto de Host Name Server para resolución de nombres de host y servicios de nombres
Registry assignments, software defaults and local listeners are different things. A port number alone does not identify or secure a service.
Software que utiliza este puerto (2 programas)
Community software entries: links are references, not individual verification.
Host Name Server
Server
Name Resolution
Service
Recomendaciones de uso
- Antes de utilizar el puerto 42, comprueba que no esté ocupado por otros servicios
- Si encuentras conflictos de puertos, considera utilizar otros puertos o detener el servicio que lo ocupa
Preguntas frecuentes
What is port 42 used for?
Port 42 sits in the System category. This page lists the registered purpose and the software commonly associated with it; to see what is actually listening on a specific machine, check the process with ss/netstat.
Is port 42 TCP or UDP?
The registered protocol on this page is TCP. The same number behaves independently on each protocol: TCP may be listening while UDP is idle, so check them separately.
How do I check if port 42 is in use?
On Linux: sudo ss -tlnp 'sport = :42' for an exact port match. On macOS: sudo lsof -nP -iTCP:42 -sTCP:LISTEN. On Windows PowerShell: Get-NetTCPConnection -LocalPort 42 -State Listen. A listener counts as confirmed only when you can see the bind address and process name; without root/admin you will not see other users' processes.
Is port 42 secure? Should I open it in my firewall?
A port number has no inherent security — it depends on whether the listening service is correctly configured and whether it needs exposure at all. Keep loopback/internal-only services firewalled; where public access is required, pair it with source restrictions, VPN or authentication.
Información rápida
- Puerto
- 42
- Protocolo
- TCP
- Categorías
- Sistema
- Estado de uso
- 2 programas que lo utilizan
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