libexec/rc/rc.d/ipfw

   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
  13 name="ipfw"
  14 desc="Firewall, traffic shaper, packet scheduler, in-kernel NAT"
  15 rcvar="firewall_enable"
  16 start_cmd="ipfw_start"
  17 start_precmd="ipfw_prestart"
  18 start_postcmd="ipfw_poststart"
  19 stop_cmd="ipfw_stop"
  20 status_cmd="ipfw_status"
  21 required_modules="ipfw"
  22 extra_commands="status"
  23
  24 set_rcvar_obsolete ipv6_firewall_enable
  25
  26 ipfw_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
  48 ipfw_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
  82 ipfw_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
 107 ipfw_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                         ${_coscript} quietstop
 123                 fi
 124         done
 125 }
 126
 127 ipfw_status()
 128 {
 129         status=$(sysctl -i -n net.inet.ip.fw.enable)
 130         : ${status:=0}
 131         if afexists inet6; then
 132                 status6=$(sysctl -i -n net.inet6.ip6.fw.enable)
 133                 : ${status6:=0}
 134                 status=$((${status} + ${status6}))
 135         fi
 136         if [ ${status} -eq 0 ]; then
 137                 echo "ipfw is not enabled"
 138                 exit 1
 139         else
 140                 echo "ipfw is enabled"
 141                 exit 0
 142         fi
 143 }
 144
 145 load_rc_config $name
 146 firewall_coscripts="/etc/rc.d/natd ${firewall_coscripts}"
 147
 148 run_rc_command $*