Date: Mon, 2 Aug 1999 21:39:37 -0500 From: Alpha and Omega <asphyxia@drexel.edu> To: Steve Howe <groggy@iname.com> Cc: freebsd-questions <questions@freebsd.org> Subject: Re: no well-known ports? Message-ID: <19990802213936.A1282@engram> In-Reply-To: <Pine.BSF.3.96.990801111104.881A-100000@froggy.anchorage.ptialaska.net>; from Steve Howe on Sun, Aug 01, 1999 at 11:11:55AM -0800 References: <Pine.BSF.3.96.990801111104.881A-100000@froggy.anchorage.ptialaska.net>
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Even though you connect to an FTP server via port 21 (usually), data transfer is done using port 20 (ftp-data); however, it is my understanding that YOU do not connect to port 20, the FTP server will connect to a port on your machine that you give in your request.. its kind of like DCC Chat, if you are familiar with that concept. For more information, consult the RFC on FTP. Hope that helped. On Sun, Aug 01, 1999 at 11:11:55AM -0800, Steve Howe wrote: > > i'm analyzing some ppp tcp/ip logs, and i see some > source/destination pairs without any well known ports > (from an ftp to ftp.cdrom.com) intermixed with the > normal ftp sequences ... > > what does this mean, and should they be permitted? > if so, how? since none of the ports are well known? > > ie: > > 111.111.111.111:1464 -> 222.222.222.222:6345 > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- A@ < asphyxia@drexel.edu >--< pgp: finger dargo@dorx.net > @I < Now go away or I shall taunt you a second time! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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