mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
121 lines
3.6 KiB
Groff
121 lines
3.6 KiB
Groff
.\" Copyright (c) 2003 FreeBSD Project
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd January 26, 2003
|
|
.Dt FTPCHROOT 5
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ftpchroot
|
|
.Nd "list users and groups subject to FTP access restrictions"
|
|
.Sh DESCRIPTION
|
|
The file
|
|
.Nm
|
|
is read by
|
|
.Xr ftpd 8
|
|
at the beginning of an FTP session, after having authenticated the user.
|
|
Each line in
|
|
.Nm
|
|
corresponds to a user or group.
|
|
If a line in
|
|
.Nm
|
|
matches the current user or a group he is a member of,
|
|
access restrictions will be applied to this
|
|
session by changing its root directory with
|
|
.Xr chroot 2
|
|
to that specified on the line or to the user's login directory.
|
|
.Pp
|
|
The order of records in
|
|
.Nm
|
|
is important because the first match will be used.
|
|
Fields on each line are separated by tabs or spaces.
|
|
.Pp
|
|
The first field specifies a user or group name.
|
|
If it is prefixed by an
|
|
.Dq at
|
|
sign,
|
|
.Ql @ ,
|
|
it specifies a group name;
|
|
the line will match each user who is a member of this group.
|
|
As a special case, a single
|
|
.Ql @
|
|
in this field will match any user.
|
|
A username is specified otherwise.
|
|
.Pp
|
|
The optional second field describes the directory for the user
|
|
or each member of the group to be locked up in using
|
|
.Xr chroot 2 .
|
|
Be it omitted, the user's login directory will be used.
|
|
If it is not an absolute pathname, then it will be relative
|
|
to the user's login directory.
|
|
If it contains the
|
|
.Pa /./
|
|
separator,
|
|
.Xr ftpd 8
|
|
will treat its left-hand side as the name of the directory to do
|
|
.Xr chroot 2
|
|
to, and its right-hand side to change the current directory to afterwards.
|
|
.Sh FILES
|
|
.Bl -tag -width ".Pa /etc/ftpchroot" -compact
|
|
.It Pa /etc/ftpchroot
|
|
.El
|
|
.Sh EXAMPLES
|
|
These lines in
|
|
.Nm
|
|
will lock up the user
|
|
.Dq Li webuser
|
|
and each member of the group
|
|
.Dq Li hostee
|
|
in their respective login directories:
|
|
.Bd -literal -offset indent
|
|
webuser
|
|
@hostee
|
|
.Ed
|
|
.Pp
|
|
And this line will tell
|
|
.Xr ftpd 8
|
|
to lock up the user
|
|
.Dq Li joe
|
|
in
|
|
.Pa /var/spool/ftp
|
|
and then to change the current directory to
|
|
.Pa /joe ,
|
|
which is relative to the session's new root:
|
|
.Pp
|
|
.Dl "joe /var/spool/ftp/./joe"
|
|
.Pp
|
|
And finally the following line will lock up every user connecting
|
|
through FTP in his respective
|
|
.Pa ~/public_html ,
|
|
thus lowering possible impact on the system
|
|
from intrinsic insecurity of FTP:
|
|
.Pp
|
|
.Dl "@ public_html"
|
|
.Sh SEE ALSO
|
|
.Xr chroot 2 ,
|
|
.Xr group 5 ,
|
|
.Xr passwd 5 ,
|
|
.Xr ftpd 8
|