etc/rc.d/ipfw

   1 #!/bin/sh
   2 #
   3 # $FreeBSD: src/etc/rc.d/ipfw,v 1.4 2003/03/30 15:52:18 mtm Exp $
   4 #
   5
   6 # PROVIDE: ipfw
   7 # REQUIRE: ppp-user
   8 # BEFORE: NETWORKING
   9
  10 . /etc/rc.subr
  11
  12 name="ipfw"
  13 rcvar="firewall_enable"
  14 start_cmd="ipfw_start"
  15 start_precmd="ipfw_precmd"
  16 stop_cmd="ipfw_stop"
  17
  18 ipfw_precmd()
  19 {
  20         # Load IPv4 firewall module, if not already loaded
  21         if ! ${SYSCTL} net.inet.ip.fw.enable > /dev/null 2>&1; then
  22                 kldload -n ipfw || return 1
  23         fi
  24         return 0
  25 }
  26
  27 ipfw_start()
  28 {
  29         # set the firewall rules script if none was specified
  30         [ -z "${firewall_script}" ] && firewall_script=/etc/rc.firewall
  31
  32         if [ -r "${firewall_script}" ]; then
  33                 . "${firewall_script}"
  34                 echo -n 'Firewall rules loaded, starting divert daemons:'
  35
  36                 # Network Address Translation daemon
  37                 #
  38                 if checkyesno natd_enable; then
  39                         if [ -n "${natd_interface}" ]; then
  40                                 if echo ${natd_interface} | \
  41                                 grep -q -E '^[0-9]+(\.[0-9]+){0,3}$'; then
  42                                         natd_flags="$natd_flags -a ${natd_interface}"
  43                                 else
  44                                         natd_flags="$natd_flags -n ${natd_interface}"
  45                                 fi
  46                         fi
  47                         echo -n ' natd'
  48                         ${natd_program:-/sbin/natd} ${natd_flags} ${natd_ifarg}
  49                 fi
  50         elif [ "`ipfw l 65535`" = "65535 deny ip from any to any" ]; then
  51                 echo 'Warning: kernel has firewall functionality, but' \
  52                     ' firewall rules are not enabled.'
  53                 echo '           All ip services are disabled.'
  54         fi
  55         echo '.'
  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
  64         # Enable the firewall
  65         #
  66         ${SYSCTL_W} net.inet.ip.fw.enable=1
  67 }
  68
  69 ipfw_stop()
  70 {
  71         # Disable the firewall
  72         #
  73         ${SYSCTL_W} net.inet.ip.fw.enable=0
  74 }
  75
  76 load_rc_config $name
  77 run_rc_command "$1"