Cómo saber las conexiones activas por FTP en un servidor Linux

Si tienes un servidor Linux y quieres saber qué conexiones de FTP están activas en ese momento o, dicho de otra manera, cuánta gente hay conectada en ese momento por FTP, hoy os decimos cómo.

Enumerar las conexiones activas por FTP en un servidor Linux.

• Pure-ftpwho: Este es uno de los primeros comandos a probar. En línea de comandos lista las conexiones de FTP activas. Pero además tiene algún parámetro interesante como -c  o -w que hace que el resultado se muestre en html. Por lo tanto puede usarse en u script y mostrarse en una web o herramienta interna.
• Puedes filtrar los resultados de netstat para el puerto que quieras, tanto el 21 de FTP clásico como el 22 de sftp.

  netstat -tan | grep \:21     para FTP

  netstat -tan | grep \:22    para SFTP

• En algunos servidores, si lo tienen instalado, también puedes ejecutar ftptop o ftpwho.

Así podréis vigilar vuestras conexiones en  el servidor.

 

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