Best practices for operators of large FTP archives
The Evolution of the Digital Library: From Starplex to Global Archives
The era of massive FTP servers eventually faded. This was due to several factors:
. The U.S. Department of Justice, in coordination with international law enforcement, launched Operation Buccaneer
: Standard FTP (Port 21) is considered insecure because it transmits credentials in plain text. Modern reviews strongly recommend using SFTP (Port 22), which encrypts both data and commands.