> For the complete documentation index, see [llms.txt](https://documentation.astera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.astera.com/astera-data-stack-v10/workflows/file-transfer/ftp.md).
# FTP
FTP is a low-security, simple file transfer protocol that is easy to set up and widely supported.
In the *Security Settings* for FTPS, select Implicit TLS or SSL or Explicit TLS or SSL.
Implicit TLS or SSL is typically used in legacy or pre-configured environments where security requirements mandate all connections to be encrypted by default. The client and server automatically establish a secure channel without any negotiation, with encryption starting as soon as the connection is established.
Explicit TLS/SSL is Commonly used in modern setups where flexibility and compatibility with non-secure FTP are needed. The connection starts unencrypted, and the client explicitly requests encryption by issuing a STARTTLS command. The server then upgrades the connection to a secure one, allowing mixed use of encrypted and unencrypted sessions based on client-server negotiation.
*Accept Unauthenticated Certificates*: Allows the FTP client to connect even if the server's SSL/TLS certificate cannot be authenticated, useful for testing or non-critical connections.
*Passive Mode*: Enables the client to initiate both control and data connections, useful for navigating firewalls and NAT environments.
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