On Tue, 6 Apr 1999, Luke Mewburn wrote:

: I don't consider the current behaviour a `bug', per se.
: 
: If a site has a firewall that doesn't support `passive', their
: ftp server shouldn't respond with a positive response code to
: the effect of ``I support passive, and here's the data...''.
: Their ftp server should return a ``passive not supported'' code.

Like it or not, this happens in an unfortunately increasing rate.  Remember
that I only recently added a `deny PASV' option to our own ftpd(1), and
wu-ftpd doesn't have such at all, AFAIK.

: Otherwise, how do you determine that you have to fallback to active?

Check and make sure that the connection after the PASV succeeded.  This
shouldn't be hard.

-- 
-- Todd Vierling (Personal tv@pobox.com; Bus. todd_vierling@xn.xerox.com)