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| ftps 2023-12-20 | ftps 2024-09-18 (current) | ||
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| In Explicit Mode, the client has full control over what areas of the connection are to be encrypted. Enabling and disabling of encryption for the %%FTPS%% control channel and %%FTPS%% data channel can occur at any time. WinSCP though requests encryption for both control and data channel unconditionally during whole session. | In Explicit Mode, the client has full control over what areas of the connection are to be encrypted. Enabling and disabling of encryption for the %%FTPS%% control channel and %%FTPS%% data channel can occur at any time. WinSCP though requests encryption for both control and data channel unconditionally during whole session. | ||
| - | bhuvan-ftp.nrsc.gov.in | + | ==== Implicit ==== |
| + | Negotiation is not allowed with implicit %%FTPS%% configurations. A client is immediately expected to challenge the %%FTPS%% server with a connection encrypted using TLS/SSL. If it does not, the server should drop the connection. | ||
| + | |||
| + | In order to maintain compatibility with existing non-%%TLS%%/%%SSL%% aware %%FTP%% clients, implicit %%FTPS%% was expected to listen on the IANA Well Known Port 990/TCP for the %%FTPS%% control channel and 989/%%TCP%% for the %%FTPS%% data channel. This allowed administrators to retain legacy compatible services on the original 21/%%TCP%% %%FTP%% control channel. | ||
| + | |||
| + | In Implicit Mode, the entire %%FTPS%% session (both control and data channels) is unconditionally encrypted. | ||
| ===== [[certificate]] TLS/SSL Certificates ===== | ===== [[certificate]] TLS/SSL Certificates ===== | ||
| Learn about TLS/SSL [[tls#certificate|server certificates]] and [[tls#client_certificate|client certificates]]. | Learn about TLS/SSL [[tls#certificate|server certificates]] and [[tls#client_certificate|client certificates]]. | ||