(Classic ASP) FTP Connect, Examine Server Certificate, and then Authenticate

Demonstrates how to connect to an FTP server, examine the server's SSL/TLS certificate, and then, if it meets the application's security requirements, proceed to authenticate.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This example assumes Chilkat Ftp2 to have been previously unlocked.
' See Unlock Ftp2 for sample code.

set ftp = Server.CreateObject("Chilkat.Ftp2")

ftp.Hostname = "www.authtls-ftps-server.com"
ftp.Username = "FTP_LOGIN"
ftp.Password = "FTP_PASSWORD"
ftp.AuthTls = 1
ftp.Port = 21

' Connect to the FTP server using explicit TLS (AUTH TLS).
success = ftp.ConnectOnly()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ftp.LastErrorText) & "</pre>"
    Response.End
End If

' Get the FTP server's certificate.
set serverCert = Server.CreateObject("Chilkat.Cert")
success = ftp.GetServerCert(serverCert)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ftp.LastErrorText) & "</pre>"
    Response.End
End If

' Now that we have the certificate, we can check it in any way we desire.
' (See the online reference documentation for the certificate object's methods
' and properties)...

' Assuming the certificate is OK, proceed to authenticate with the FTP server.
success = ftp.LoginAfterConnectOnly()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ftp.LastErrorText) & "</pre>"
    Response.End
End If

' 
' Proceed with uploading/download files, etc...
' 

success = ftp.Disconnect()
Response.Write "<pre>" & Server.HTMLEncode( "Success.") & "</pre>"

%>
</body>
</html>