ipfw revision 118099 
1#!/bin/sh
2#
3# $FreeBSD: head/etc/rc.d/ipfw 118099 2003-07-27 20:34:30Z mbr $
4#
5
6# PROVIDE: ipfw
7# REQUIRE: ppp-user
8# BEFORE: NETWORKING
9# KEYWORD: FreeBSD
10
11. /etc/rc.subr
12. /etc/network.subr
13
14name="ipfw"
15rcvar="firewall_enable"
16start_cmd="ipfw_start"
17start_precmd="ipfw_precmd"
18stop_cmd="ipfw_stop"
19
20ipfw_precmd()
21{
22	if ! ${SYSCTL} net.inet.ip.fw.enable > /dev/null 2>&1; then
23		if ! kldload ipfw; then
24			warn unable to load firewall module.
25			return 1
26		fi
27	fi
28
29	return 0
30}
31
32ipfw_start()
33{
34	# set the firewall rules script if none was specified
35	[ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
36
37	if [ -r "${firewall_script}" ]; then
38		. "${firewall_script}"
39		echo -n 'Firewall rules loaded, starting divert daemons:'
40
41		# Network Address Translation daemon
42		#
43		if checkyesno natd_enable; then
44			dhcp_list="`list_net_interfaces dhcp`"
45			for ifn in ${dhcp_list}; do
46				case ${natd_interface} in
47				${ifn})
48					natd_flags="$natd_flags -dynamic"
49					;;
50				*)
51					;;
52				esac
53			done
54			if [ -n "${natd_interface}" ]; then
55				if echo ${natd_interface} | \
56				grep -q -E '^[0-9]+(\.[0-9]+){0,3}$'; then
57					natd_flags="$natd_flags -a ${natd_interface}"
58				else
59					natd_flags="$natd_flags -n ${natd_interface}"
60				fi
61			fi
62			echo -n ' natd'
63			${natd_program:-/sbin/natd} ${natd_flags} ${natd_ifarg}
64		fi
65	elif [ "`ipfw l 65535`" = "65535 deny ip from any to any" ]; then
66		echo 'Warning: kernel has firewall functionality, but' \
67		    ' firewall rules are not enabled.'
68		echo '           All ip services are disabled.'
69	fi
70	echo '.'
71
72	# Firewall logging
73	#
74	if checkyesno firewall_logging; then
75		echo 'Firewall logging enabled'
76		sysctl net.inet.ip.fw.verbose=1 >/dev/null
77	fi
78
79	# Enable the firewall
80	#
81	${SYSCTL_W} net.inet.ip.fw.enable=1
82}
83
84ipfw_stop()
85{
86	# Disable the firewall
87	#
88	${SYSCTL_W} net.inet.ip.fw.enable=0
89	killall natd;
90	sleep 2;
91}
92
93load_rc_config $name
94run_rc_command "$1"
95