I've been using Apache FtpServer for a couple years now to handle some
automated internal file tranfers that involve some post-processing and
it's been excellent - reliable and fast. However, I have a new
requirement that the connection be SSL. I thought it would be quick and
easy to configure, despite the fact that I know absolutely nothing about
how this should be configured. 
After setting it up that way I thought it should be, I get this in the
logs when the client tries to connect:
[ WARN] 2009-01-26 16:04:54,543 [] [] CREATED
[ WARN] 2009-01-26 16:04:54,544 [] [] OPENED

(Log level is set to DEBUG)
It never progresses past that stage. The client is never prompted for a
username. I've tried several things, but essentially my attempts are
random since I don't really know what I'm doing. So, I'd appreciate it
if someone could offer some advice.
I have a keystore (conf/keystore.jks) with one certificate:
% keytool -list -keystore conf/keystore.jks
Enter keystore password:  password
Keystore type: jks
Keystore provider: IBMJCE
Your keystore contains 1 entry
xfer, Jan 26, 2009, trustedCertEntry,
Certificate fingerprint (MD5):

This is running on AIX. My contact on the client side tells me it should
be enough to just have the certificate (it was provided by him and is
the same as the one in his application).
My ftpd.xml has the following configuration:
                <nio-listener name="default" port="30021"
                        <ssl protocol="SSL"
                        <keystore file="conf/keystore.jks"
password="password"  key-alias="xfer" algorithm="IbmX509" />
                        <truststore file="conf/keystore.jks"
password="password" algorithm="IbmX509" />
                        <data-connection implicit-ssl="true"/>

My last desperate attempt to get this working was to add 'protocol="SSL"
client-authentication="WANT"' to ssl and to add the '<data-connection
implicit-ssl="true"/>' line. Neither change got me past the 'OPENED'
step. I don't get any further that that when I try locally, so I know it
isn't a network issue. The server finds the keystore when it starts up.
There are no exceptions in the log, except for the one caused by forcing
the connection to close.

Can anyone help me out? The attached logfile is a clean start,
connection attempt, cancelled from the client, shutdown.

Thanks in advance!

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