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Port8020— Hadoop HDFS NameNode

Port HTTP alternatif pour la gestion des serveurs web

Registry assignments, software defaults and local listeners are different things. A port number alone does not identify or secure a service.

Logiciels utilisant ce port (1 logiciels)

Community software entries: links are references, not individual verification.

Hadoop HDFS NameNode

Hadoop HDFS NameNode

Conseils d’utilisation

  • Avant d’utiliser le port 8020, vérifiez qu’il n’est pas occupé par d’autres services
  • En cas de conflit de ports, envisagez d’utiliser d’autres ports ou d’arrêter le service qui occupe le port

Questions fréquentes

What is port 8020 used for?

Port 8020 sits in the Big Data 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 8020 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 8020 is in use?

On Linux: sudo ss -tlnp 'sport = :8020' for an exact port match. On macOS: sudo lsof -nP -iTCP:8020 -sTCP:LISTEN. On Windows PowerShell: Get-NetTCPConnection -LocalPort 8020 -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 8020 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.

En bref

Port
8020
Protocole
TCP
Catégories
Big Data
État d’utilisation
1 logiciels utilisant ce port

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