Hi,
We are using Open SSL in our FTP Server for seure FTP Communication.

When performing FTP Server aging test(uploading continuously frm client),
FTP Server sent SSL packet even before sending greeting message to the
client. Kindly find the below sequence of failure cases.

1. MFP established the control connection with FTP Server (Client sent SYN
and FTP Servr acknowledged it).
2.  FTP Server connect socket sent SSL packet with "Encrypted alert 21" and
client acknowledged it.
note: By this time FTP Server did not even load the SSL modules. from the
FTP Server code, we are not sending any enccrypted alert.

3. FTP Server sent “220 Sharp – FTP Server” response to client and client
sent acknowledgment.
4. clent resent the acknowledgment. After 60 seconds client closed the
connection. 
IN the above error sequence, we feel client closed the connection with
server due to encryption alert in the above step 2 .
Why does encrypted alert occur even before the SSL handshake is initiated?
Kindly provide us any clue to solve the issue at the earliest.

Additinally, we observed that encrypted alert is occured from the client to
server when closing the previous connection. Does the previous connection
closing lead to the encrypted alert of the current connection.
Thank you. 

 



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