Re: SFTP from iSeries failes to connect while Filezilla works fine

[Scott Klement <midrange-l@xxxxxxxxxxxxxxxx>]

SFTP has no notion of active/passive mode.

Regular FTP opens a new network connection for every file it transfers. 
 In order to do that, it has to "negotiate" with the server to tell it 
which IP address and which port to connect to.  That's the part that can 
either be done in active (client tells server) or passive (server tells 
client) mode.

SFTP isn't a network protocol at all.  It's just an interface to SSH. 
The SSH protocol doesn't use (or need) multiple connections.  It 
transfers everything through a single TCP connection -- the same one 
that your commands are issued in. Since there's no negotiation of a 2nd 
connection, there's also no active/passive mode (which are the means of 
negotiating that 2nd connection.)


On 11/15/2010 2:13 PM, Bob Schwartz wrote:
> Can you use passive mode with SFTP? I had the same issue with FTP
> where FileZilla worked and my script didn't. It was fixed by coding
> the script to use passive mode. Bob