ipfw revision 346181 
1#!/bin/sh
2#
3# $FreeBSD: stable/11/etc/rc.d/ipfw 346181 2019-04-13 09:06:36Z ae $
4#
5
6# PROVIDE: ipfw
7# REQUIRE: ppp
8# KEYWORD: nojailvnet
9
10. /etc/rc.subr
11. /etc/network.subr
12
13name="ipfw"
14desc="Firewall, traffic shaper, packet scheduler, in-kernel NAT"
15rcvar="firewall_enable"
16start_cmd="ipfw_start"
17start_precmd="ipfw_prestart"
18start_postcmd="ipfw_poststart"
19stop_cmd="ipfw_stop"
20status_cmd="ipfw_status"
21required_modules="ipfw"
22extra_commands="status"
23
24set_rcvar_obsolete ipv6_firewall_enable
25
26ipfw_prestart()
27{
28	if checkyesno dummynet_enable; then
29		required_modules="$required_modules dummynet"
30	fi
31	if checkyesno natd_enable; then
32		required_modules="$required_modules ipdivert"
33	fi
34	if checkyesno firewall_nat_enable; then
35		required_modules="$required_modules ipfw_nat"
36	fi
37	if checkyesno firewall_nat64_enable; then
38		required_modules="$required_modules ipfw_nat64"
39	fi
40	if checkyesno firewall_nptv6_enable; then
41		required_modules="$required_modules ipfw_nptv6"
42	fi
43	if checkyesno firewall_pmod_enable; then
44		required_modules="$required_modules ipfw_pmod"
45	fi
46}
47
48ipfw_start()
49{
50	local   _firewall_type
51
52	if [ -n "${1}" ]; then
53		_firewall_type=$1
54	else
55		_firewall_type=${firewall_type}
56	fi
57
58	# set the firewall rules script if none was specified
59	[ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
60
61	if [ -r "${firewall_script}" ]; then
62		/bin/sh "${firewall_script}" "${_firewall_type}"
63		echo 'Firewall rules loaded.'
64	elif [ "`ipfw list 65535`" = "65535 deny ip from any to any" ]; then
65		echo 'Warning: kernel has firewall functionality, but' \
66		    ' firewall rules are not enabled.'
67		echo '           All ip services are disabled.'
68	fi
69
70	# Firewall logging
71	#
72	if checkyesno firewall_logging; then
73		echo 'Firewall logging enabled.'
74		${SYSCTL} net.inet.ip.fw.verbose=1 >/dev/null
75	fi
76	if checkyesno firewall_logif; then
77		ifconfig ipfw0 create
78		echo 'Firewall logging pseudo-interface (ipfw0) created.'
79	fi
80}
81
82ipfw_poststart()
83{
84	local	_coscript
85
86	# Start firewall coscripts
87	#
88	for _coscript in ${firewall_coscripts} ; do
89		if [ -f "${_coscript}" ]; then
90			${_coscript} quietstart
91		fi
92	done
93
94	# Enable the firewall
95	#
96	if ! ${SYSCTL} net.inet.ip.fw.enable=1 >/dev/null 2>&1; then
97		warn "failed to enable IPv4 firewall"
98	fi
99	if afexists inet6; then
100		if ! ${SYSCTL} net.inet6.ip6.fw.enable=1 >/dev/null 2>&1
101		then
102			warn "failed to enable IPv6 firewall"
103		fi
104	fi
105}
106
107ipfw_stop()
108{
109	local	_coscript
110
111	# Disable the firewall
112	#
113	${SYSCTL} net.inet.ip.fw.enable=0 >/dev/null
114	if afexists inet6; then
115		${SYSCTL} net.inet6.ip6.fw.enable=0 >/dev/null
116	fi
117
118	# Stop firewall coscripts
119	#
120	for _coscript in `reverse_list ${firewall_coscripts}` ; do
121		if [ -f "${_coscript}" ]; then
122			${_coscript} quietstop
123		fi
124	done
125}
126
127ipfw_status()
128{
129    status=$(sysctl -n net.inet.ip.fw.enable)
130    if [ ${status} -eq 0 ]; then
131	echo "ipfw is not enabled"
132	exit 1
133    else
134	echo "ipfw is enabled"
135	exit 0
136    fi
137}
138
139load_rc_config $name
140firewall_coscripts="/etc/rc.d/natd ${firewall_coscripts}"
141
142run_rc_command $*
143