Date: Sun, 14 Apr 1996 22:00:03 +0200 (MET DST) From: Ollivier Robert <roberto@keltia.freenix.fr> To: joerg_wunsch@uriah.heep.sax.de Cc: ports@FreeBSD.ORG (FreeBSD's ports list) Subject: Re: How to avoid passive mode ftp? Message-ID: <199604142000.WAA01214@keltia.freenix.fr> In-Reply-To: <199604141212.OAA04771@uriah.heep.sax.de> from J Wunsch at "Apr 14, 96 02:12:14 pm"
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It seems that J Wunsch said:
> I think it's not only that it was ``high range'', but i'm pretty sure
> that the port on my side was the *server* port.
Wait a minute. I must have missed something... How can the port on your
side be the *server* port ?
By my definitions, we have
Active FTP is (HR = high range port, UNP = unprivilegied port):
client server
UNP ---------------------------------------> 21
send a PORT with port # (1)
The port in (1) <------------------------------- 20
The port in (1) will be a HR if the client is a FreeBSD standard ftp/ncftp.
and passive FTP:
client server
UNP #1 --------------------------------------> 21
send a PASV
Answer with port # (2)
UNP #2 --------------------------------------> The port in (2)
The port in (2) will be a HR if the server is a FreeBSD standard ftpd.
--
Ollivier ROBERT -=- The daemon is FREE! -=- roberto@keltia.freenix.fr
FreeBSD keltia.freenix.fr 2.2-CURRENT #11: Tue Apr 9 20:14:48 MET DST 1996
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