Wireshark-users: Re: [Wireshark-users] FTP analysis
From: "Phillips, Christopher M" <cmphil@xxxxxxxxxxx>
Date: Thu, 3 Sep 2009 16:10:16 +0100

Sounds like active/passive FTP problem.

Windows FTP uses active mode by default.


Active mode can often have trouble working through firewalls/routers.


When you have connected to the ftp site type the command ‘literal pasv’ which should switch the client into passive mode.

To make permanent default see here:



Better still use a decent ftp client like filezilla



Also remember if your not using sftp or scp the traffic or the password to the ftp site is not encrypted……




-----Original Message-----
From: wireshark-users-bounces@xxxxxxxxxxxxx [mailto:wireshark-users-bounces@xxxxxxxxxxxxx] On Behalf Of Mohan Radhakrishnan
Sent: 03 September 2009 10:06
To: wireshark-users@xxxxxxxxxxxxx
Subject: [Wireshark-users] FTP analysis



          I have a ftp connection to a server and I am trying to analyze why even though wireshark shows that the files are transferrred successfully Windows ftp does not complete the transfer. How do I go about analyzing the problem ?


Wireshark shows


226 Transfer complete successfully.


but the windows ftp client does not save the file. It hangs. So what was working a few days back is now hanging. What type of analysis should I run ?