110 lines
3.3 KiB
Groff
110 lines
3.3 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
|
||
|
.Qq 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 .
|
||
|
If it is not an absolute pathname, then it will be relative
|
||
|
to the user's login directory.
|
||
|
Be this field omitted, the user's login directory will be used.
|
||
|
.Sh FILES
|
||
|
.Bl -tag -width /etc/ftpchroot -compact
|
||
|
.It Pa /etc/ftpchroot
|
||
|
.El
|
||
|
.Sh EXAMPLES
|
||
|
These lines in
|
||
|
.Nm
|
||
|
will lock up the user
|
||
|
.Qq webuser
|
||
|
and each member of the group
|
||
|
.Qq hostee
|
||
|
in their respective login directories:
|
||
|
.Bd -literal -offset indent
|
||
|
webuser
|
||
|
@hostee
|
||
|
.Ed
|
||
|
.Pp
|
||
|
And this line will lock up the user
|
||
|
.Qq joe
|
||
|
in
|
||
|
.Pa /var/spool/ftp :
|
||
|
.Bd -literal -offset indent
|
||
|
joe /var/spool/ftp
|
||
|
.Ed
|
||
|
.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:
|
||
|
.Bd -literal -offset indent
|
||
|
@ public_html
|
||
|
.Ed
|
||
|
.Sh SEE ALSO
|
||
|
.Xr chroot 2 ,
|
||
|
.Xr group 5 ,
|
||
|
.Xr passwd 5 ,
|
||
|
.Xr ftpd 8 .
|