#!/bin/sh
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#
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# bastille-firewall Load/unload ipchains rulesets
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#
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# do not rename this file unless you edit /sbin/bastille-firewall-reset
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#
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# chkconfig: 2345 5 98
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# description: A firewall/packet-filter script for Linux systems \
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# that allows the machine to be used as a gateway system
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#
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# $Id: bastille-firewall,v 1.6 2002/02/24 17:19:14 peterw Exp $
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# Copyright (c) 1999-2002 Peter Watkins
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Thanks to David Ranch, Brad A, Don G, and others for their suggestions
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#
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# This script is designed to be used as a SysV-style init script.
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#
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# It should be run with a "start" argument
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# 1) as an rc?.d "S" script, _before_ the "network" script
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# [copy this to /etc/rc.d/init.d/bastille-firewall (or your equivalent of
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# /etc/rc.d/init.d) and run 'chkconfig -add bastille-firewall' ]
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# 2) any time an interface is brought up or changed, e.g.
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# establishing a PPP conection or renewing a DHCP lease
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# [copy 'bastille-firewall-reset', 'bastille-firewall-schedule'
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# and 'ifup-local' to /sbin/]
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#
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# Normally you Do Not _Ever_ Want to run this with a "stop" argument!
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#
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# Note that running this with "stop" will disable the firewall and open
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# your system to all network traffic; if you make changes to these rules,
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# apply them by running the script again with a "start" argument.
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#
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# ** As of 0.99-beta1, this script merely kicks off the real script,
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# either /sbin/bastille-ipchains or /sbin/bastille-netfilter
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# Default is to use the 'ipchains' script, which will load the
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# ipchains compatibility module if you're using a 2.4 kernel
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REALSCRIPT=/sbin/bastille-ipchains
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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# exit function to be called in place of regular Bourne exit
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clean_exit()
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{
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rmdir /var/lock/bastille-firewall 2>/dev/null
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exit $1
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}
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[ ! -d /var/lock ] && mkdir -m 0755 /var/lock
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mkdir -m 0700 /var/lock/bastille-firewall 2>/dev/null
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if [ $? -ne 0 ]; then
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if [ -n "${BASTILLE_FWALL_QUIET_FAIL}" ]; then exit 0; fi
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echo "ERROR: bastille-firewall currently being reset or lock is stuck."
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echo "To un-stick, remove the directory /var/lock/bastille-firewall"
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exit 1
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fi
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if [ -n "$(uname -r | awk -F. ' $1 == 2 && $2 > 2 {print}')" ]; then
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# We are using Linux 2.3 or newer; use the netfilter script if available
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if [ -x /sbin/bastille-netfilter ]; then
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REALSCRIPT=/sbin/bastille-netfilter
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fi
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fi
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if [ ! -x ${REALSCRIPT} ]; then
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echo "ERROR: \"${REALSCRIPT}\" not available!"
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clean_exit 1
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fi
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${REALSCRIPT} "$1"
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bretval=$?
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# Use "subsys" locks to indicate our status
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case "$1" in
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start|restart|reload)
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if [ $bretval -eq 0 ]; then touch /var/lock/subsys/bastille-firewall; fi
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;;
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stop)
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rm -f /var/lock/subsys/bastille-firewall
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;;
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esac
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clean_exit $bretval
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