sbin/init/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="$required_modules ipfw_nat"
  36         fi
  37 }
  38
  39 ipfw_start()
  40 {
  41         local   _firewall_type
  42
  43         if [ -n "${1}" ]; then
  44                 _firewall_type=$1
  45         else
  46                 _firewall_type=${firewall_type}
  47         fi
  48
  49         # set the firewall rules script if none was specified
  50         [ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
  51
  52         if [ -r "${firewall_script}" ]; then
  53                 /bin/sh "${firewall_script}" "${_firewall_type}"
  54                 echo 'Firewall rules loaded.'
  55         elif [ "`ipfw list 65535`" = "65535 deny ip from any to any" ]; then
  56                 echo 'Warning: kernel has firewall functionality, but' \
  57                     ' firewall rules are not enabled.'
  58                 echo '           All ip services are disabled.'
  59         fi
  60
  61         # Firewall logging
  62         #
  63         if checkyesno firewall_logging; then
  64                 echo 'Firewall logging enabled.'
  65                 ${SYSCTL} net.inet.ip.fw.verbose=1 >/dev/null
  66         fi
  67         if checkyesno firewall_logif; then
  68                 ifconfig ipfw0 create
  69                 echo 'Firewall logging pseudo-interface (ipfw0) created.'
  70         fi
  71 }
  72
  73 ipfw_poststart()
  74 {
  75         local   _coscript
  76
  77         # Start firewall coscripts
  78         #
  79         for _coscript in ${firewall_coscripts} ; do
  80                 if [ -f "${_coscript}" ]; then
  81                         ${_coscript} quietstart
  82                 fi
  83         done
  84
  85         # Enable the firewall
  86         #
  87         if ! ${SYSCTL} net.inet.ip.fw.enable=1 >/dev/null 2>&1; then
  88                 warn "failed to enable IPv4 firewall"
  89         fi
  90         if afexists inet6; then
  91                 if ! ${SYSCTL} net.inet6.ip6.fw.enable=1 >/dev/null 2>&1
  92                 then
  93                         warn "failed to enable IPv6 firewall"
  94                 fi
  95         fi
  96 }
  97
  98 ipfw_stop()
  99 {
 100         local   _coscript
 101
 102         # Disable the firewall
 103         #
 104         ${SYSCTL} net.inet.ip.fw.enable=0 >/dev/null
 105         if afexists inet6; then
 106                 ${SYSCTL} net.inet6.ip6.fw.enable=0 >/dev/null
 107         fi
 108
 109         # Stop firewall coscripts
 110         #
 111         for _coscript in `reverse_list ${firewall_coscripts}` ; do
 112                 if [ -f "${_coscript}" ]; then
 113                         ${_coscript} quietstop
 114                 fi
 115         done
 116 }
 117
 118 ipfw_status()
 119 {
 120         status=$(sysctl -i -n net.inet.ip.fw.enable)
 121         if [ ${status:-0} -eq 0 ]; then
 122                 echo "ipfw is not enabled"
 123                 exit 1
 124         else
 125                 echo "ipfw is enabled"
 126                 exit 0
 127         fi
 128 }
 129
 130 load_rc_config $name
 131 firewall_coscripts="/etc/rc.d/natd ${firewall_coscripts}"
 132
 133 run_rc_command $*