[NTLUG:Discuss] Passive sftp?

[Leroy Tennison]

I've heard of passive ftp but this is new to me.  I searched the Web for 
'passive sftp' and got 32 hits total, none of which explained anything.

Is there such a thing?  If so, what are it's features and 
characteristics?  The comment came from a vendor in the context of 
"keeps sftp from prompting for a password" which I had associated with 
user keys.  Is the vendor confused or do they know something I don't?

Thanks for any and all replies.