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