SecureBlackbox Knowledge Base

Recent filetp Articles


How do I validate the server key in OnKeyValidate event?

Here's the simple scenario. Of course, you can extend and change it if necessary. On the first connection to a certain host, the application shows the server key…

ASCIIMode property doesn't seem to work. What's wrong?

Text mode is supported by SFTP protocol versions 4 and later. To ensure that the connection is established using SFTP 4 or later, you need to enable SFTP 4, 5 an…

Why doesn't SSL/TLS (HTTPS, FTPS etc) client connect to the server with default settings?

Short answer First of all, newer versions of servers expect the client to have enabled either new (TLS 1.1, TLS 1.2) or old (SSL 3) versions of the protocol, but…

Why is the year reported incorrectly in directory listings?

FTPS protocol doesn't have a standard format for directory listings (see the exception below). Many modern FTP systems use so-called Unix listing format produced…

ListDirectory or GetFileList methods return 0 elements, though file download works. What's wrong?

ListDirectory or GetFileList methods return 0 elements, though file download works.

Active property of the socket-based component is true, though I know that connection has been closed by the server. Why so?

Active property, when set, indicates that the connection was successful and the component was ready to perform its actions. However, if the connection was lost o…

Passive mode doesn't work in TElSimpleFTPSServer. What

Passive mode doesn't work in TElSimpleFTPSServer. What is happening?

Simple commands are executed correctly, but listing or file transfer doesn't work. What should I do?

Simple commands are executed correctly, but listing or file transfer doesn't work. What to do: