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" 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 _module _sysctl_reload 51 52 if [ -n "${1}" ]; then 53 _firewall_type=$1 54 else 55 _firewall_type=${firewall_type} 56 fi 57 58 _sysctl_reload=no 59 for _module in ${required_modules} 60 do 61 if kldstat -qn ${_module}; then 62 _sysctl_reload=yes 63 break 64 fi 65 done 66 67 if [ ${_sysctl_reload} = yes ]; then 68 /etc/rc.d/sysctl reload 69 fi 70 71 # set the firewall rules script if none was specified 72 [ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall 73 74 if [ -r "${firewall_script}" ]; then 75 /bin/sh "${firewall_script}" "${_firewall_type}" 76 echo 'Firewall rules loaded.' 77 elif [ "`ipfw list 65535`" = "65535 deny ip from any to any" ]; then 78 echo 'Warning: kernel has firewall functionality, but' \ 79 'firewall rules are not enabled.' 80 echo ' All ip services are disabled.' 81 fi 82 83 # Firewall logging 84 # 85 if checkyesno firewall_logging; then 86 echo 'Firewall logging enabled.' 87 ${SYSCTL} net.inet.ip.fw.verbose=1 >/dev/null 88 fi 89 if checkyesno firewall_logif; then 90 if ! ifconfig ipfw0 >/dev/null 2>&1; then 91 ifconfig ipfw0 create 92 echo 'Firewall logging pseudo-interface (ipfw0)' \ 93 'created.' 94 else 95 echo 'Firewall logging pseudo-interface (ipfw0)' \ 96 'already created.' 97 fi 98 fi 99} 100 101ipfw_poststart() 102{ 103 local _coscript 104 105 # Start firewall coscripts 106 # 107 for _coscript in ${firewall_coscripts} ; do 108 if [ -f "${_coscript}" ]; then 109 ${_coscript} quietstart 110 fi 111 done 112 113 # Enable the firewall 114 # 115 if ! ${SYSCTL} net.inet.ip.fw.enable=1 >/dev/null 2>&1; then 116 warn "failed to enable IPv4 firewall" 117 fi 118 if afexists inet6; then 119 if ! ${SYSCTL} net.inet6.ip6.fw.enable=1 >/dev/null 2>&1 120 then 121 warn "failed to enable IPv6 firewall" 122 fi 123 fi 124} 125 126ipfw_stop() 127{ 128 local _coscript 129 130 # Disable the firewall 131 # 132 ${SYSCTL} net.inet.ip.fw.enable=0 >/dev/null 133 if afexists inet6; then 134 ${SYSCTL} net.inet6.ip6.fw.enable=0 >/dev/null 135 fi 136 137 # Stop firewall coscripts 138 # 139 for _coscript in `reverse_list ${firewall_coscripts}` ; do 140 if [ -f "${_coscript}" ]; then 141 ${_coscript} quietstop 142 fi 143 done 144} 145 146ipfw_status() 147{ 148 status=$(sysctl -i -n net.inet.ip.fw.enable) 149 : ${status:=0} 150 if afexists inet6; then 151 status6=$(sysctl -i -n net.inet6.ip6.fw.enable) 152 : ${status6:=0} 153 status=$((${status} + ${status6})) 154 fi 155 if [ ${status} -eq 0 ]; then 156 echo "ipfw is not enabled" 157 exit 1 158 else 159 echo "ipfw is enabled" 160 exit 0 161 fi 162} 163 164load_rc_config $name 165firewall_coscripts="/etc/rc.d/natd ${firewall_coscripts}" 166 167run_rc_command $* 168