> asked me about it), this server is private (hosting in US : 
> atomicvps.com)

So you are using a public server on a WAN, with a NAT routers or a firewall on
either end of the connection?
 
> as another test i also installed local filezilla server and was 
> able to reproduce same problem with it (ICS upload to local 
> filezilla server)

But now you say it fails on the LAN as well, is that with the ICS SSL demo FTP
application? 

This is an extract log from the ICS FTP server I asked you to test against,
which shows Passive mode with SSL does work OK.  This test is done using my DUN
Manager application you can download and test from: 

http://www.magsys.co.uk/dunman/

Starting FTP Download from: ics.ftptest.org
Connect/Logon to FTP Server: ics.ftptest.org:990
Check for Old SSL Session
! SSL handshake OK
SSL Handshake Done OK, Secured with TLSv1, Cipher AES256-SHA, Secret Bits 256
(Total 256)
0 Certificate(s) in the verify chain
Starting SSL Session
Cache SSL Session: New
< 220-ics.ftptest.org
< 
< 220-ICS TFtpServerW (c) 1998-2013 F. Piette V8.04
< 220 Server: MAGPUB2 at 2014-04-08T19:17:26
FTP Session Connected to 217.146.102.142:990

Downloading File: /test/testcode.asp to E:\temp1\testcode.asp, size 10.7 Kbytes
> PASV
< 227 Entering Passive Mode (217,146,102,142,82,82).
> RETR testcode.asp
Check for Old SSL Session
< 150 Opening data connection for testcode.asp.
! SSL handshake OK
SSL Handshake Done OK, Secured with TLSv1, Cipher AES256-SHA, Secret Bits 256
(Total 256)
0 Certificate(s) in the verify chain
Starting SSL Session
Cache SSL Session: Reuse
< 226 File sent ok
! 10.7Kbytes received/sent in 250 milliseconds
Downloaded File e:\temp1\testcode_asp.tmp, size 10.7 Kbytes
Updating Time Stamp: E:\temp1\testcode.asp to (UTC)=20080307-230000
Download OK: E:\temp1\testcode.asp, size: 10.7 Kbytes, duration 0:00, average
speed 38.1K/sec

Angus

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