Dictionary · Protocols and Ports
FTPS
FTPS — FTP Secure
File transfer · Intermediate
Classic file transfer wrapped in transport encryption. Implicit mode is commonly associated with port 990, while explicit mode can start on the normal control port and then upgrade.
This is the encrypted version of the older two-connection file protocol. It is easy to confuse with file transfer inside a secure shell, which is a different design.
Example: A client negotiates encryption and then uses protected control and data connections to upload a file.
Ports
- TCP 990 — Implicit encrypted control
Common misconception
- It is not the secure-shell file protocol. The letters look similar and the designs are different.