From owner-freebsd-current Tue Jun 1 15:50:40 1999 Delivered-To: freebsd-current@freebsd.org Received: from eterna.binary.net (eterna.binary.net [12.13.84.6]) by hub.freebsd.org (Postfix) with ESMTP id 1DF0B14C82 for ; Tue, 1 Jun 1999 15:50:37 -0700 (PDT) (envelope-from nathan@rtfm.net) Received: from matrix.binary.net (nathan@matrix.binary.net [12.13.120.2]) by eterna.binary.net (8.9.1a/8.9.1) with ESMTP id RAA09954; Tue, 1 Jun 1999 17:50:36 -0500 (CDT) Received: (from nathan@localhost) by matrix.binary.net (8.9.1a/8.9.1) id RAA13890; Tue, 1 Jun 1999 17:50:36 -0500 (CDT) Date: Tue, 1 Jun 1999 18:50:35 -0400 From: Nathan Dorfman To: John Polstra Cc: dwhite@resnet.uoregon.edu, current@FreeBSD.ORG Subject: Re: FTP passive mode - a new default? Message-ID: <19990601185035.A11288@rtfm.net> References: <199905280446.VAA06342@vashon.polstra.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95i In-Reply-To: <199905280446.VAA06342@vashon.polstra.com>; from John Polstra on Thu, May 27, 1999 at 09:46:51PM -0700 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, May 27, 1999 at 09:46:51PM -0700, John Polstra wrote: > In article , > Doug White wrote: > > > I second the suggestion to 'autoprobe' PASV support, and revert to active > > mode (w/ an appropriate msg) if PASV is refused. > > That won't be a good solution in practice. When passive mode doesn't > work, it's almost always because a firewall on the server side is > blocking the incoming data connection. The client doesn't see a > refusal; its connect() call just times out. The trouble is, the > timeout takes a long time (on the order of a minute or more). Certain shareware lose95 FTP servers don't know how to do passive mode. The NetBSD ftp client uses passive mode by default, but will send a PORT if the PASV is unsuccessful. > John > -- > John Polstra jdp@polstra.com > John D. Polstra & Co., Inc. Seattle, Washington USA > "Self-interest is the aphrodisiac of belief." -- James V. DeLong -- Nathan Dorfman The statements and opinions in my Unix Admin @ Frontline Communications public posts are mine, not FCC's. "The light at the end of the tunnel is the headlight of an approaching train." --/usr/games/fortune To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message