1#!/bin/sh 2# 3# 4 5# PROVIDE: ipfw 6# REQUIRE: ppp 7# KEYWORD: nojailvnet 8 9. /etc/rc.subr 10. /etc/network.subr 11 12name="ipfw" 13desc="Firewall, traffic shaper, packet scheduler, in-kernel NAT" 14rcvar="firewall_enable" 15start_cmd="ipfw_start" 16start_precmd="ipfw_prestart" 17start_postcmd="ipfw_poststart" 18stop_cmd="ipfw_stop" 19status_cmd="ipfw_status" 20required_modules="ipfw" 21extra_commands="status" 22 23set_rcvar_obsolete ipv6_firewall_enable 24 25ipfw_prestart() 26{ 27 if checkyesno dummynet_enable; then 28 required_modules="$required_modules dummynet" 29 fi 30 if checkyesno natd_enable; then 31 required_modules="$required_modules ipdivert" 32 fi 33 if checkyesno firewall_nat_enable; then 34 required_modules="$required_modules ipfw_nat" 35 fi 36 if checkyesno firewall_nat64_enable; then 37 required_modules="$required_modules ipfw_nat64" 38 fi 39 if checkyesno firewall_nptv6_enable; then 40 required_modules="$required_modules ipfw_nptv6" 41 fi 42 if checkyesno firewall_pmod_enable; then 43 required_modules="$required_modules ipfw_pmod" 44 fi 45} 46 47ipfw_start() 48{ 49 local _firewall_type _module _sysctl_reload 50 51 if [ -n "${1}" ]; then 52 _firewall_type=$1 53 else 54 _firewall_type=${firewall_type} 55 fi 56 57 _sysctl_reload=no 58 for _module in ${required_modules} 59 do 60 if kldstat -qn ${_module}; then 61 _sysctl_reload=yes 62 break 63 fi 64 done 65 66 if [ ${_sysctl_reload} = yes ]; then 67 /etc/rc.d/sysctl reload 68 fi 69 70 # set the firewall rules script if none was specified 71 [ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall 72 73 if [ -r "${firewall_script}" ]; then 74 /bin/sh "${firewall_script}" "${_firewall_type}" 75 echo 'Firewall rules loaded.' 76 elif [ "`ipfw list 65535`" = "65535 deny ip from any to any" ]; then 77 echo 'Warning: kernel has firewall functionality, but' \ 78 'firewall rules are not enabled.' 79 echo ' All ip services are disabled.' 80 fi 81 82 # Firewall logging 83 # 84 if checkyesno firewall_logging; then 85 echo 'Firewall logging enabled.' 86 ${SYSCTL} net.inet.ip.fw.verbose=1 >/dev/null 87 fi 88 if checkyesno firewall_logif; then 89 if ! ifconfig ipfw0 >/dev/null 2>&1; then 90 ifconfig ipfw0 create 91 echo 'Firewall logging pseudo-interface (ipfw0)' \ 92 'created.' 93 else 94 echo 'Firewall logging pseudo-interface (ipfw0)' \ 95 'already created.' 96 fi 97 fi 98} 99 100ipfw_poststart() 101{ 102 local _coscript 103 104 # Start firewall coscripts 105 # 106 for _coscript in ${firewall_coscripts} ; do 107 if [ -f "${_coscript}" ]; then 108 ${_coscript} quietstart 109 fi 110 done 111 112 # Enable the firewall 113 # 114 if ! ${SYSCTL} net.inet.ip.fw.enable=1 >/dev/null 2>&1; then 115 warn "failed to enable IPv4 firewall" 116 fi 117 if afexists inet6; then 118 if ! ${SYSCTL} net.inet6.ip6.fw.enable=1 >/dev/null 2>&1 119 then 120 warn "failed to enable IPv6 firewall" 121 fi 122 fi 123} 124 125ipfw_stop() 126{ 127 local _coscript 128 129 # Disable the firewall 130 # 131 ${SYSCTL} net.inet.ip.fw.enable=0 >/dev/null 132 if afexists inet6; then 133 ${SYSCTL} net.inet6.ip6.fw.enable=0 >/dev/null 134 fi 135 136 # Stop firewall coscripts 137 # 138 for _coscript in `reverse_list ${firewall_coscripts}` ; do 139 if [ -f "${_coscript}" ]; then 140 ${_coscript} quietstop 141 fi 142 done 143} 144 145ipfw_status() 146{ 147 status=$(sysctl -i -n net.inet.ip.fw.enable) 148 : ${status:=0} 149 if afexists inet6; then 150 status6=$(sysctl -i -n net.inet6.ip6.fw.enable) 151 : ${status6:=0} 152 status=$((${status} + ${status6})) 153 fi 154 if [ ${status} -eq 0 ]; then 155 echo "ipfw is not enabled" 156 exit 1 157 else 158 echo "ipfw is enabled" 159 exit 0 160 fi 161} 162 163load_rc_config $name 164firewall_coscripts="/etc/rc.d/natd ${firewall_coscripts}" 165 166run_rc_command $* 167