Hi Dieter. Yes, we have tried both passive and non passive FTP. In either case, according to the Z2.log we get enter Zope successfully, but the session appears to hang on the FTP "LIST" command. No files or directories are visible. Several folks have pointed to NAT problems, but why this problem would only show up only at the "LIST" request does not make sense to me. Here's the whole Z2.log entry: ==> 220 FTP server (Medusa Async V1.18 [experimental]) ready. <== USER ***** ==> 331 Password required. <== PASS <password> ==> 230 Login successful. <== PWD ==> 257 "/" is the current directory. <== SYST ==> 215 UNIX Type: L8 <== PORT 10,0,0,6,4,13 ==> 200 PORT command successful. <== LIST ==> 150 Opening ASCII mode data connection for file list ... Session hangs and will not list directories or files. Harlow Pinson Indepth Learning Email: hpinson@indepthl.com Web: http://www.indepthl.com Voice: 505-994-2135 FAX: 208-475-7678