[Nottingham] ProFTPD

[Graeme Fowler]

On 21/09/2006 16:17, Roger Light wrote:
> The standard Linux client uses the AUTH command. It happens after you
> send the USER command and before the password. I'm reasonably certain
> it is for querying whether ftp over tls is available. Nice to have,
> but not necessary to use ftp.

Well I never, how times move on ;-)

http://www.faqs.org/rfcs/rfc2228.html

The blighters keep on adding stuff I don't know about, but this time I'm 
only 9 years OOD!

It appears that the AUTH command is actually an extension which adds to 
the USER/PASS to give useful things like GSSAPI and Kerberos 
authentication schemes. TLS is implemented separately as per:

ftp://ftp.rfc-editor.org/in-notes/rfc4217.txt

Although it uses the AUTH command to make the switch.

Confused yet? :)

G