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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: ipfw
# REQUIRE: ppp-user
# BEFORE: NETWORKING
# KEYWORD: FreeBSD
. /etc/rc.subr
. /etc/network.subr
name="ipfw"
rcvar="firewall_enable"
start_cmd="ipfw_start"
start_precmd="ipfw_precmd"
stop_cmd="ipfw_stop"
ipfw_precmd()
{
if ! ${SYSCTL} net.inet.ip.fw.enable > /dev/null 2>&1; then
if ! kldload ipfw; then
warn unable to load firewall module.
return 1
fi
fi
return 0
}
ipfw_start()
{
# set the firewall rules script if none was specified
[ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
if [ -r "${firewall_script}" ]; then
. "${firewall_script}"
echo -n 'Firewall rules loaded, starting divert daemons:'
# Network Address Translation daemon
#
if checkyesno natd_enable; then
dhcp_list="`list_net_interfaces dhcp`"
for ifn in ${dhcp_list}; do
case ${natd_interface} in
${ifn})
natd_flags="$natd_flags -dynamic"
;;
*)
;;
esac
done
if [ -n "${natd_interface}" ]; then
if echo ${natd_interface} | \
grep -q -E '^[0-9]+(\.[0-9]+){0,3}$'; then
natd_flags="$natd_flags -a ${natd_interface}"
else
natd_flags="$natd_flags -n ${natd_interface}"
fi
fi
echo -n ' natd'
${natd_program:-/sbin/natd} ${natd_flags} ${natd_ifarg}
fi
elif [ "`ipfw l 65535`" = "65535 deny ip from any to any" ]; then
echo 'Warning: kernel has firewall functionality, but' \
' firewall rules are not enabled.'
echo ' All ip services are disabled.'
fi
echo '.'
# Firewall logging
#
if checkyesno firewall_logging; then
echo 'Firewall logging enabled'
sysctl net.inet.ip.fw.verbose=1 >/dev/null
fi
# Enable the firewall
#
${SYSCTL_W} net.inet.ip.fw.enable=1
}
ipfw_stop()
{
# Disable the firewall
#
${SYSCTL_W} net.inet.ip.fw.enable=0
killall natd;
sleep 2;
}
load_rc_config $name
run_rc_command "$1"
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