🚀 go-pugleaf

In article 75vats$a2r$1@horse.fsinet.or.jp>,
 "SHIMIZU, Kenji" <shi@a2.mbn.or.jp> wrote:

 | サーバによってはパッシブモードができない（機能しないよう
 | に設定されているもしくはもともと機能が無い）場合もありま
 | す。

例えば wu-ftpd-2.4.2-beta-18-vr ではコンパイル時に PORT or PASV だけにし
か対応させない、または両方に対応させるか否かを決めることができます。
PASV に対応させた際には ftpaccess(5) で

	passive address <externalip> <cidr>
		Allows control of the address reported in response to
		a PASV command.  When any control connection matching
		the <cidr> requests a passive data connection (PASV),
		the <externalip> address is reported.  NOTE: this does
		not change the address the daemone actually listens
		on, only the address reported to the client.  This
		feature allows the daemon to operate correctly behind
		IP-renumbering firewalls.

	For example:
		passive address 10.0.1.15   10.0.0.0/8
		passive address 192.168.1.5 0.0.0.0/0
	Clients connecting from the class-A network 10 will be told
	the passive connection is listening on IP-address 10.0.1.15
	while all others will be told the connection is listening on
	192.168.1.5

	Multiple passive addresses may be specified to handle complex,
	or multi-gatewayed, networks.

	passive ports <cidr> <min> <max>
		Allows control of the TCP port numbers which may be
		used for a passive data connection.  If the control
		connection matches the <cidr> a port in the range
		<min> to <max> will be randomly selected for the
		daemon to listen on.  This feature allows firewalls to
		limit the ports which remote clients may use to
		connect into the protected network.

	<cidr> is shorthand for an IP address in dotted-quad notation
	followed by a slash and the number of left-most bits which
	represent the network address (as opposed to the machine
	address).  For example, if you're using the reserved class-A
	network 10, instead of a netmask of 255.0.0.0 use a CIDR of /8
	as in 10.0.0.0/8 to represent your network.

などといった設定をすることもできます。

	ftp://ftp.vr.net/pub/wu-ftpd/
	ftp://ftp.win.ne.jp/pub/network/ftp/wu-ftpd/wu-ftpd-vr/

-- あやむら