1#!/bin/sh
2#
3# $FreeBSD$
4#
5
6# PROVIDE: ipfw
7# REQUIRE: ppp
8# KEYWORD: nojailvnet
9
10. /etc/rc.subr
11. /etc/network.subr
12
13name="ipfw"
14rcvar="firewall_enable"
15start_cmd="ipfw_start"
16start_precmd="ipfw_prestart"
17start_postcmd="ipfw_poststart"
18stop_cmd="ipfw_stop"
19required_modules="ipfw"
20
21set_rcvar_obsolete ipv6_firewall_enable
22
23ipfw_prestart()
24{
25	if checkyesno dummynet_enable; then
26		required_modules="$required_modules dummynet"
27	fi
28	if checkyesno natd_enable; then
29		required_modules="$required_modules ipdivert"
30	fi
31	if checkyesno firewall_nat_enable; then
32		required_modules="$required_modules ipfw_nat"
33	fi
34}
35
36ipfw_start()
37{
38	local   _firewall_type
39
40	_firewall_type=$1
41
42	# set the firewall rules script if none was specified
43	[ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
44
45	if [ -r "${firewall_script}" ]; then
46		/bin/sh "${firewall_script}" "${_firewall_type}"
47		echo 'Firewall rules loaded.'
48	elif [ "`ipfw list 65535`" = "65535 deny ip from any to any" ]; then
49		echo 'Warning: kernel has firewall functionality, but' \
50		    ' firewall rules are not enabled.'
51		echo '           All ip services are disabled.'
52	fi
53
54	# Firewall logging
55	#
56	if checkyesno firewall_logging; then
57		echo 'Firewall logging enabled.'
58		sysctl net.inet.ip.fw.verbose=1 >/dev/null
59	fi
60	if checkyesno firewall_logif; then
61		ifconfig ipfw0 create
62		echo 'Firewall logging pseudo-interface (ipfw0) created.'
63	fi
64}
65
66ipfw_poststart()
67{
68	local	_coscript
69
70	# Start firewall coscripts
71	#
72	for _coscript in ${firewall_coscripts} ; do
73		if [ -f "${_coscript}" ]; then
74			${_coscript} quietstart
75		fi
76	done
77
78	# Enable the firewall
79	#
80	if ! ${SYSCTL} net.inet.ip.fw.enable=1 1>/dev/null 2>&1; then
81		warn "failed to enable IPv4 firewall"
82	fi
83	if afexists inet6; then
84		if ! ${SYSCTL} net.inet6.ip6.fw.enable=1 1>/dev/null 2>&1
85		then
86			warn "failed to enable IPv6 firewall"
87		fi
88	fi
89}
90
91ipfw_stop()
92{
93	local	_coscript
94
95	# Disable the firewall
96	#
97	${SYSCTL} net.inet.ip.fw.enable=0
98	if afexists inet6; then
99		${SYSCTL} net.inet6.ip6.fw.enable=0
100	fi
101
102	# Stop firewall coscripts
103	#
104	for _coscript in `reverse_list ${firewall_coscripts}` ; do
105		if [ -f "${_coscript}" ]; then
106			${_coscript} quietstop
107		fi
108	done
109}
110
111load_rc_config $name
112firewall_coscripts="/etc/rc.d/natd ${firewall_coscripts}"
113
114run_rc_command $*
115