diff options
Diffstat (limited to 'usr.sbin/jail/jail.8')
-rw-r--r-- | usr.sbin/jail/jail.8 | 65 |
1 files changed, 58 insertions, 7 deletions
diff --git a/usr.sbin/jail/jail.8 b/usr.sbin/jail/jail.8 index f6238e7..1f85de5 100644 --- a/usr.sbin/jail/jail.8 +++ b/usr.sbin/jail/jail.8 @@ -1,4 +1,29 @@ .\" +.\"Copyright (c) 2000 Robert N. M. Watson +.\"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. +.\" +.\" .\"---------------------------------------------------------------------------- .\""THE BEER-WARE LICENSE" (Revision 42): .\"<phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you @@ -37,6 +62,7 @@ D=/here/is/the/jail cd /usr/src make hierarchy DESTDIR=$D make obj +make depend make all make install DESTDIR=$D cd etc @@ -141,6 +167,10 @@ Create an empty /etc/fstab to quell startup warnings about missing fstab .It Disable the port mapper (rc.conf: portmap_enable="NO") .It +Run +.Xr newaliases 1 +to quell sendmail warnings. +.It Disable interface configuration to quell startup warnings about ifconfig (network_interfaces="") .It @@ -168,7 +198,7 @@ virtual host interface, and then start the jail's script from within the jail. .Pp NOTE: If you plan to allow untrusted users to have root access inside the -jail, you may wish to consider setting the kern.jail.set_hostname_allowed to +jail, you may wish to consider setting the jail.set_hostname_allowed to 0. Please see the management reasons why this is a good idea. If you do decide to set this variable, it must be set before starting any jails, and once each boot. @@ -236,13 +266,34 @@ default, modified from within the jail, so the .Pa /proc status entry is unreliably by default. To disable the setting of the hostname from within a jail, set the -.Dq Va kern.jail.set_hostname_allowed -sysctl variable in the host environment to 0, which will affect all jails. In -a future version of FreeBSD, the mechanisms for managing jails will be more -refined. +.Dq Va jail.set_hostname_allowed +sysctl variable in the host environment to 0, which will affect all jails. +You can have this sysctl set each boot using +.Xr sysctl.conf 5 . +Just add the following line to sysctl.conf: +.Bd -literal -offset indent +jail.set_hostname_allowed=0 +.Ed +.Pp +In a future version of FreeBSD, the mechanisms for managing jails will be +more refined. .Sh SEE ALSO +.Xr newaliases 1 , +.Xr ps 1 , .Xr chroot 2 , -.Xr jail 2 +.Xr jail 2 , +.Xr procfs 5 , +.Xr rc.conf 5 , +.Xr sysctl.conf 5 , +.Xr halt 8 , +.Xr inetd 8 , +.Xr named 8 , +.Xr portmap 8 , +.Xr reboot 8 , +.Xr sendmail 8 , +.Xr shutdown 8 , +.Xr sysctl 8 , +.Xr syslogd 8 .Sh HISTORY The .Fn jail @@ -253,7 +304,7 @@ The jail feature was written by Poul-Henning Kamp for R&D Associates .Dq Li http://www.rndassociates.com/ who contributed it to FreeBSD. - +.Pp Robert Watson wrote the extended documentation, found a few bugs, added a few new features, and cleaned up the userland jail environment. .Sh BUGS |