asa syslog:

6	Nov 04 2010	07:07:04		85.95.45.106	23558	192.168.1.50	20	Built inbound TCP connection 64484 for outside:85.95.45.106/23558 (85.95.45.106/23558) to inside:192.168.1.50/20 (62.89.40.36/20)
6	Nov 04 2010	07:06:54		85.95.45.106	39154	192.168.1.50	20	Built inbound TCP connection 64482 for outside:85.95.45.106/39154 (85.95.45.106/39154) to inside:192.168.1.50/20 (62.89.40.36/20)
6	Nov 04 2010	07:06:53		85.95.45.106	57354	192.168.1.50	21	Built inbound TCP connection 64481 for outside:85.95.45.106/57354 (85.95.45.106/57354) to inside:192.168.1.50/21 (62.89.40.36/21)

FileZilla server log:

(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> Connected, sending welcome message...
(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> 220-FileZilla Server version 0.9.37 beta
(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> 220-written by Tim Kosse (Tim.Kosse@gmx.de)
(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> 220 Please visit http://sourceforge.net/projects/filezilla/
(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> USER hoh
(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> 331 Password required for hoh
(000008)04.11.2010 08:06:45 - (not logged in) (85.95.45.106)> PASS ***********
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 230 Logged on
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> SYST
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 215 UNIX emulated by FileZilla
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> FEAT
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 211-Features:
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  MDTM
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  REST STREAM
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  SIZE
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  MLST type*;size*;modify*;
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  MLSD
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  UTF8
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  CLNT
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)>  MFMT
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 211 End
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> PWD
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 257 "/" is current directory.
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> TYPE A
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 200 Type set to A
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> PORT 85,95,45,106,152,242
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 200 Port command successful
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> LIST -a
(000008)04.11.2010 08:06:45 - hoh (85.95.45.106)> 150 Opening data channel for directory list.
(000008)04.11.2010 08:06:56 - hoh (85.95.45.106)> 425 Can't open data connection.
(000008)04.11.2010 08:06:56 - hoh (85.95.45.106)> TYPE A