behind proxy

[andreas]

My Info:
* FlashFXP 4.0.0.1548 registered
* OS: Windows 7
* Running behind NAT/router: No
* Running firewall - Yes (Cisco ASA)
* Running Antivirus - Yes (McAfee)
* Network - LAN

I am using a proxy (cisco ironport) to handle ALL ftp sessions.
During passive mode:

I configure a proxy server: proxy.mydomain.com , port 8021 , and proxy user/pass
My proxy IP is: 10.128.a.b
Then I try to connect to ftp.ntua.gr (147.102.222.211:21). This is a public ftp allowinng anonymous access.

Which are the problems:

* Flashfxp initialize the connection using "10.128.a.b" IP (this is correct, this is the proxy IP). After that flashfxp tries to connect directly to FTP (147.102.222.211) and gets blocked! The connection should continiue to 10.128.a.b:11005

* Menu: Options --> Preferences --> Connection --> Proxy --> Under Type is a way to define a custom sequence of username /password?
Checkpoint Type usually fits but can I define a custom login type?

* Why proxy IP is separated by commas instead of dots? :) [i couldnt resist to ask!]

If I use active mode I can sucesfully connect to ftp
Thank you