#!/bin/sh 
#
#  This is automatically generated file. DO NOT MODIFY !
#
#  Firewall Builder  fwb_ipt v4.2.0.3499
#
#  Generated Sat Mar 12 19:38:36 2011 PST by vadim
#
# files: * secuwall-1.fw /etc/secuwall-1.fw
#
# Compiled for iptables (any version)
#
# This firewall has two interfaces. Eth0 faces outside and has a dynamic address; eth1 faces inside.
# Policy includes basic rules to permit unrestricted outbound access and anti-spoofing rules. Access to the firewall is permitted only from internal network and only using SSH. The firewall uses one of the machines on internal network for DNS. Internal network is configured with address 192.168.1.0/255.255.255.0




FWBDEBUG=""

PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
export PATH



LSMOD="/bin/lsmod"
MODPROBE="/sbin/modprobe"
IPTABLES="/sbin/iptables"
IP6TABLES="/sbin/ip6tables"
IPTABLES_RESTORE="/sbin/iptables-restore"
IP6TABLES_RESTORE="/sbin/ip6tables-restore"
IP="/sbin/ip"
IFCONFIG="/sbin/ifconfig"
VCONFIG="/sbin/vconfig"
BRCTL="/sbin/brctl"
IFENSLAVE="/sbin/ifenslave"
IPSET="/usr/sbin/ipset"
LOGGER="/usr/bin/logger"

log() {
    echo "$1"
    command -v "$LOGGER" >/dev/null 2>&1 && $LOGGER -p info "$1"
}

getInterfaceVarName() {
    echo $1 | sed 's/\./_/'
}

getaddr_internal() {
    dev=$1
    name=$2
    af=$3
    L=$($IP $af addr show dev $dev |  sed -n '/inet/{s!.*inet6* !!;s!/.*!!p}' | sed 's/peer.*//')
    test -z "$L" && { 
        eval "$name=''"
        return
    }
    eval "${name}_list=\"$L\"" 
}

getaddr() {
    getaddr_internal $1 $2 "-4"
}

getaddr6() {
    getaddr_internal $1 $2 "-6"
}

# function getinterfaces is used to process wildcard interfaces
getinterfaces() {
    NAME=$1
    $IP link show | grep ": $NAME" | while read L; do
        OIFS=$IFS
        IFS=" :"
        set $L
        IFS=$OIFS
        echo $2
    done
}

diff_intf() {
    func=$1
    list1=$2
    list2=$3
    cmd=$4
    for intf in $list1
    do
        echo $list2 | grep -q $intf || {
        # $vlan is absent in list 2
            $func $intf $cmd
        }
    done
}

find_program() {
  PGM=$1
  command -v $PGM >/dev/null 2>&1 || {
    echo "$PGM not found"
    exit 1
  }
}
check_tools() {
  find_program $IPTABLES 
 find_program $MODPROBE 
  find_program $IP 
}
reset_iptables_v4() {
  $IPTABLES -P OUTPUT  DROP
  $IPTABLES -P INPUT   DROP
  $IPTABLES -P FORWARD DROP

cat /proc/net/ip_tables_names | while read table; do
  $IPTABLES -t $table -L -n | while read c chain rest; do
      if test "X$c" = "XChain" ; then
        $IPTABLES -t $table -F $chain
      fi
  done
  $IPTABLES -t $table -X
done
}

reset_iptables_v6() {
  $IP6TABLES -P OUTPUT  DROP
  $IP6TABLES -P INPUT   DROP
  $IP6TABLES -P FORWARD DROP

cat /proc/net/ip6_tables_names | while read table; do
  $IP6TABLES -t $table -L -n | while read c chain rest; do
      if test "X$c" = "XChain" ; then
        $IP6TABLES -t $table -F $chain
      fi
  done
  $IP6TABLES -t $table -X
done
}


P2P_INTERFACE_WARNING=""

missing_address() {
    address=$1
    cmd=$2

    oldIFS=$IFS
    IFS="@"
    set $address
    addr=$1
    interface=$2
    IFS=$oldIFS



    $IP addr show dev $interface | grep -q POINTOPOINT && {
        test -z "$P2P_INTERFACE_WARNING" && echo "Warning: Can not update address of interface $interface. fwbuilder can not manage addresses of point-to-point interfaces yet"
        P2P_INTERFACE_WARNING="yes"
        return
    }

    test "$cmd" = "add" && {
      echo "# Adding ip address: $interface $addr"
      echo $addr | grep -q ':' && {
          $FWBDEBUG $IP addr $cmd $addr dev $interface
      } || {
          $FWBDEBUG $IP addr $cmd $addr broadcast + dev $interface
      }
    }

    test "$cmd" = "del" && {
      echo "# Removing ip address: $interface $addr"
      $FWBDEBUG $IP addr $cmd $addr dev $interface || exit 1
    }

    $FWBDEBUG $IP link set $interface up
}

list_addresses_by_scope() {
    interface=$1
    scope=$2
    ignore_list=$3
    $IP addr ls dev $interface | \
      awk -v IGNORED="$ignore_list" -v SCOPE="$scope" \
        'BEGIN {
           split(IGNORED,ignored_arr);
           for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
         }
         (/inet |inet6 / && $0 ~ SCOPE && !($2 in ignored_dict)) {print $2;}' | \
        while read addr; do
          echo "${addr}@$interface"
	done | sort
}


update_addresses_of_interface() {
    ignore_list=$2
    set $1 
    interface=$1 
    shift

    FWB_ADDRS=$(
      for addr in $*; do
        echo "${addr}@$interface"
      done | sort
    )

    CURRENT_ADDRS_ALL_SCOPES=""
    CURRENT_ADDRS_GLOBAL_SCOPE=""

    $IP link show dev $interface >/dev/null 2>&1 && {
      CURRENT_ADDRS_ALL_SCOPES=$(list_addresses_by_scope $interface 'scope .*' "$ignore_list")
      CURRENT_ADDRS_GLOBAL_SCOPE=$(list_addresses_by_scope $interface 'scope global' "$ignore_list")
    } || {
      echo "# Interface $interface does not exist"
      # Stop the script if we are not in test mode
      test -z "$FWBDEBUG" && exit 1
    }

    diff_intf missing_address "$FWB_ADDRS" "$CURRENT_ADDRS_ALL_SCOPES" add
    diff_intf missing_address "$CURRENT_ADDRS_GLOBAL_SCOPE" "$FWB_ADDRS" del
}

clear_addresses_except_known_interfaces() {
    $IP link show | sed 's/://g' | awk -v IGNORED="$*" \
        'BEGIN {
           split(IGNORED,ignored_arr);
           for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
         }
         (/state/ && !($2 in ignored_dict)) {print $2;}' | \
         while read intf; do
            echo "# Removing addresses not configured in fwbuilder from interface $intf"
            $FWBDEBUG $IP addr flush dev $intf scope global
            $FWBDEBUG $IP link set $intf down
         done
}

check_file() {
    test -r "$2" || {
        echo "Can not find file $2 referenced by address table object $1"
        exit 1
    }
}

check_run_time_address_table_files() {
    :
    
}

load_modules() {
    :
    echo "Modules are loaded only at startup!"
}

verify_interfaces() {
    :
    echo "Verifying interfaces: eth0 eth1 lo"
    for i in eth0 eth1 lo ; do
        $IP link show "$i" > /dev/null 2>&1 || {
            log "Interface $i does not exist"
            exit 1
        }
    done
}

prolog_commands() {
    echo "Running prolog script"
    
}

epilog_commands() {
    echo "Running epilog script"
    
}

run_epilog_and_exit() {
    epilog_commands
    exit $1
}

configure_interfaces() {
    for runstop in keepalived conntrackd network ; do
        /etc/init.d/${runstop} stop
    done

    /sbin/ifclear all

    for runstart in management network keepalived conntrackd ; do
        /etc/init.d/${runstart} start
    done
}

script_body() {
    # ================ IPv4


    # ================ Table 'filter', automatic rules
    # accept established sessions
    $IPTABLES -A INPUT   -m state --state ESTABLISHED,RELATED -j ACCEPT 
    $IPTABLES -A OUTPUT  -m state --state ESTABLISHED,RELATED -j ACCEPT 
    $IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT 










    # client DNS for the firewall


    # ================ Table 'nat',  rule set NAT
    # 
    # Rule 0 (NAT)
    # 
    echo "Rule 0 (NAT)"
    # 
    $IPTABLES -t nat -A POSTROUTING -o eth0  -s 192.168.1.0/24  -j SNAT --to-source 172.24.0.1
    # 
    # Rule 1 (NAT)
    # 
    echo "Rule 1 (NAT)"
    # 
    $IPTABLES -t nat -A PREROUTING -p tcp -m tcp  -s 192.168.1.0/24   --dport 80 -j REDIRECT --to-ports 3128



    # ================ Table 'filter', rule set Policy
    # 
    # Rule -8 VRRP (automatic)
    # 
    echo "Rule -8 VRRP (automatic)"
    # 
    $IPTABLES -A OUTPUT -o lo  -p vrrp  -d 224.0.0.18   -j ACCEPT
    # 
    # Rule -7 VRRP (automatic)
    # 
    echo "Rule -7 VRRP (automatic)"
    # 
    $IPTABLES -A INPUT -i lo  -p vrrp  -s 127.0.0.1   -d 224.0.0.18   -j ACCEPT
    # 
    # Rule -6 VRRP (automatic)
    # 
    echo "Rule -6 VRRP (automatic)"
    # 
    $IPTABLES -A OUTPUT -o eth1  -p vrrp  -d 224.0.0.18   -j ACCEPT
    # 
    # Rule -5 VRRP (automatic)
    # 
    echo "Rule -5 VRRP (automatic)"
    # 
    $IPTABLES -A INPUT -i eth1  -p vrrp  -s 192.168.1.3   -d 224.0.0.18   -j ACCEPT
    # 
    # Rule -4 VRRP (automatic)
    # 
    echo "Rule -4 VRRP (automatic)"
    # 
    $IPTABLES -A OUTPUT -o eth0  -p vrrp  -d 224.0.0.18   -j ACCEPT
    # 
    # Rule -3 VRRP (automatic)
    # 
    echo "Rule -3 VRRP (automatic)"
    # 
    $IPTABLES -A INPUT -i eth0  -p vrrp  -s 172.24.0.3   -d 224.0.0.18   -j ACCEPT
    # 
    # Rule -2 CONNTRACK (automatic)
    # 
    echo "Rule -2 CONNTRACK (automatic)"
    # 
    $IPTABLES -A OUTPUT -o eth0  -p udp -m udp  -d 225.0.0.50   --dport 3780  -j ACCEPT
    # 
    # Rule -1 CONNTRACK (automatic)
    # 
    echo "Rule -1 CONNTRACK (automatic)"
    # 
    $IPTABLES -A INPUT -i eth0  -p udp -m udp  -d 225.0.0.50   --dport 3780  -j ACCEPT
    # 
    # Rule 0 (eth0)
    # 
    echo "Rule 0 (eth0)"
    # 
    # anti spoofing rule
    $IPTABLES -N In_RULE_0
    $IPTABLES -A INPUT -i eth0   -s 172.24.0.1   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A INPUT -i eth0   -s 172.24.0.2   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A INPUT -i eth0   -s 192.168.1.1   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A INPUT -i eth0   -s 192.168.1.2   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A INPUT -i eth0   -s 192.168.1.0/24   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A FORWARD -i eth0   -s 172.24.0.1   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A FORWARD -i eth0   -s 172.24.0.2   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A FORWARD -i eth0   -s 192.168.1.1   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A FORWARD -i eth0   -s 192.168.1.2   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A FORWARD -i eth0   -s 192.168.1.0/24   -m state --state NEW  -j In_RULE_0
    $IPTABLES -A In_RULE_0  -j LOG  --log-level info --log-prefix "RULE 0 -- DENY "
    $IPTABLES -A In_RULE_0  -j DROP
    # 
    # Rule 1 (lo)
    # 
    echo "Rule 1 (lo)"
    # 
    $IPTABLES -A INPUT -i lo   -m state --state NEW  -j ACCEPT
    $IPTABLES -A OUTPUT -o lo   -m state --state NEW  -j ACCEPT
    # 
    # Rule 2 (eth0)
    # 
    echo "Rule 2 (eth0)"
    # 
    $IPTABLES -A INPUT -i ! eth0   -m state --state NEW  -j ACCEPT
    $IPTABLES -A FORWARD -i ! eth0   -m state --state NEW  -j ACCEPT
    $IPTABLES -A OUTPUT -o ! eth0   -m state --state NEW  -j ACCEPT
    $IPTABLES -A FORWARD -o ! eth0   -m state --state NEW  -j ACCEPT
    # 
    # Rule 3 (eth0)
    # 
    echo "Rule 3 (eth0)"
    # 
    # "firewall is part of any" OFF
    $IPTABLES -A FORWARD -i ! eth0   -m state --state NEW  -j ACCEPT
    $IPTABLES -A FORWARD -o ! eth0   -m state --state NEW  -j ACCEPT
    # 
    # Rule 4 (eth0)
    # 
    echo "Rule 4 (eth0)"
    # 
    # "firewall is part of any" OFF
    $IPTABLES -A FORWARD -i eth0   -m state --state NEW  -j ACCEPT
    $IPTABLES -A FORWARD -o eth0   -m state --state NEW  -j ACCEPT
    # 
    # Rule 5 (eth0,eth1)
    # 
    echo "Rule 5 (eth0,eth1)"
    # 
    $IPTABLES -A INPUT -i eth0  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    $IPTABLES -A INPUT -i eth1  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    $IPTABLES -N Cid8117X67022.0
    $IPTABLES -A OUTPUT -o eth0  -p tcp -m tcp  --dport 22  -m state --state NEW  -j Cid8117X67022.0
    $IPTABLES -A Cid8117X67022.0  -d 172.24.0.1   -j ACCEPT
    $IPTABLES -A Cid8117X67022.0  -d 172.24.0.2   -j ACCEPT
    $IPTABLES -A Cid8117X67022.0  -d 192.168.1.1   -j ACCEPT
    $IPTABLES -A Cid8117X67022.0  -d 192.168.1.2   -j ACCEPT
    $IPTABLES -N Cid8117X67022.1
    $IPTABLES -A OUTPUT -o eth1  -p tcp -m tcp  --dport 22  -m state --state NEW  -j Cid8117X67022.1
    $IPTABLES -A Cid8117X67022.1  -d 172.24.0.1   -j ACCEPT
    $IPTABLES -A Cid8117X67022.1  -d 172.24.0.2   -j ACCEPT
    $IPTABLES -A Cid8117X67022.1  -d 192.168.1.1   -j ACCEPT
    $IPTABLES -A Cid8117X67022.1  -d 192.168.1.2   -j ACCEPT
    # 
    # Rule 6 (cl1 intf 0,1)
    # 
    echo "Rule 6 (cl1 intf 0,1)"
    # 
    $IPTABLES -A INPUT -i eth0  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    $IPTABLES -A INPUT -i eth1  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    $IPTABLES -N Cid39519X67022.0
    $IPTABLES -A OUTPUT -o eth0  -p tcp -m tcp  --dport 22  -m state --state NEW  -j Cid39519X67022.0
    $IPTABLES -A Cid39519X67022.0  -d 172.24.0.1   -j ACCEPT
    $IPTABLES -A Cid39519X67022.0  -d 172.24.0.2   -j ACCEPT
    $IPTABLES -A Cid39519X67022.0  -d 192.168.1.1   -j ACCEPT
    $IPTABLES -A Cid39519X67022.0  -d 192.168.1.2   -j ACCEPT
    $IPTABLES -N Cid39519X67022.1
    $IPTABLES -A OUTPUT -o eth1  -p tcp -m tcp  --dport 22  -m state --state NEW  -j Cid39519X67022.1
    $IPTABLES -A Cid39519X67022.1  -d 172.24.0.1   -j ACCEPT
    $IPTABLES -A Cid39519X67022.1  -d 172.24.0.2   -j ACCEPT
    $IPTABLES -A Cid39519X67022.1  -d 192.168.1.1   -j ACCEPT
    $IPTABLES -A Cid39519X67022.1  -d 192.168.1.2   -j ACCEPT
    # 
    # Rule 7 (eth0,eth1)
    # 
    echo "Rule 7 (eth0,eth1)"
    # 
    # "firewall is part of any" OFF
    $IPTABLES -A INPUT -i eth0  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    $IPTABLES -A INPUT -i eth1  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    # 
    # Rule 8 (cl1 intf 0,1)
    # 
    echo "Rule 8 (cl1 intf 0,1)"
    # 
    # "firewall is part of any" OFF
    $IPTABLES -A INPUT -i eth0  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    $IPTABLES -A INPUT -i eth1  -p tcp -m tcp  --dport 22  -m state --state NEW  -j ACCEPT
    # 
    # Rule 9 (global)
    # 
    echo "Rule 9 (global)"
    # 
    # SSH Access to firewall is permitted
    # only from internal network
    $IPTABLES -A INPUT -p tcp -m tcp  -s 192.168.1.0/24   --dport 22  -m state --state NEW  -j ACCEPT
    # 
    # Rule 10 (global)
    # 
    echo "Rule 10 (global)"
    # 
    # Firewall uses one of the machines
    # on internal network for DNS
    $IPTABLES -N RULE_10
    $IPTABLES -A OUTPUT -p tcp -m tcp  -d 192.168.1.0/24   --dport 53  -m state --state NEW  -j RULE_10
    $IPTABLES -A OUTPUT -p udp -m udp  -d 192.168.1.0/24   --dport 53  -m state --state NEW  -j RULE_10
    $IPTABLES -A RULE_10  -j LOG  --log-level info --log-prefix "RULE 10 -- ACCEPT "
    $IPTABLES -A RULE_10  -j ACCEPT
    # 
    # Rule 11 (global)
    # 
    echo "Rule 11 (global)"
    # 
    # All other attempts to connect to
    # the firewall are denied and logged
    $IPTABLES -N RULE_11
    $IPTABLES -A OUTPUT  -d 172.24.0.1   -m state --state NEW  -j RULE_11
    $IPTABLES -A OUTPUT  -d 172.24.0.2   -m state --state NEW  -j RULE_11
    $IPTABLES -A OUTPUT  -d 192.168.1.1   -m state --state NEW  -j RULE_11
    $IPTABLES -A OUTPUT  -d 192.168.1.2   -m state --state NEW  -j RULE_11
    $IPTABLES -A INPUT  -m state --state NEW  -j RULE_11
    $IPTABLES -A RULE_11  -j LOG  --log-level info --log-prefix "RULE 11 -- DENY "
    $IPTABLES -A RULE_11  -j DROP
    # 
    # Rule 12 (global)
    # 
    echo "Rule 12 (global)"
    # 
    $IPTABLES -A INPUT  -s 192.168.1.0/24   -m state --state NEW  -j ACCEPT
    $IPTABLES -A OUTPUT  -s 192.168.1.0/24   -m state --state NEW  -j ACCEPT
    $IPTABLES -A FORWARD  -s 192.168.1.0/24   -m state --state NEW  -j ACCEPT
    # 
    # Rule 13 (global)
    # 
    echo "Rule 13 (global)"
    # 
    $IPTABLES -N RULE_13
    $IPTABLES -A OUTPUT  -m state --state NEW  -j RULE_13
    $IPTABLES -A INPUT  -m state --state NEW  -j RULE_13
    $IPTABLES -A FORWARD  -m state --state NEW  -j RULE_13
    $IPTABLES -A RULE_13  -j LOG  --log-level info --log-prefix "RULE 13 -- DENY "
    $IPTABLES -A RULE_13  -j DROP
}

ip_forward() {
    :
    echo 1 > /proc/sys/net/ipv4/ip_forward
}

reset_all() {
    :
    reset_iptables_v4
}

block_action() {
    reset_all
}

stop_action() {
    reset_all
    $IPTABLES -P OUTPUT  ACCEPT
    $IPTABLES -P INPUT   ACCEPT
    $IPTABLES -P FORWARD ACCEPT
}

check_iptables() {
    IP_TABLES="$1"
    [ ! -e $IP_TABLES ] && return 151
    NF_TABLES=$(cat $IP_TABLES 2>/dev/null)
    [ -z "$NF_TABLES" ] && return 152
    return 0
}
status_action() {
    check_iptables "/proc/net/ip_tables_names"
    ret_ipv4=$?
    check_iptables "/proc/net/ip6_tables_names"
    ret_ipv6=$?
    [ $ret_ipv4 -eq 0 -o $ret_ipv6 -eq 0 ] && return 0
    [ $ret_ipv4 -eq 151 -o $ret_ipv6 -eq 151 ] && {
        echo "iptables modules are not loaded"
    }
    [ $ret_ipv4 -eq 152 -o $ret_ipv6 -eq 152 ] && {
        echo "Firewall is not configured"
    }
    exit 3
}

# See how we were called.
# For backwards compatibility missing argument is equivalent to 'start'

cmd=$1
test -z "$cmd" && {
    cmd="start"
}

case "$cmd" in
    start)
        log "Activating firewall script generated Sat Mar 12 19:38:36 2011 by vadim"
        log "Database was cluster-tests.fwb"
        check_tools
        check_run_time_address_table_files
        
         prolog_commands 
        load_modules "nat "
        configure_interfaces
        verify_interfaces
        
         reset_all 
        
        script_body
        ip_forward
        epilog_commands
        RETVAL=$?
        ;;

    stop)
        stop_action
        RETVAL=$?
        ;;

    status)
        status_action
        RETVAL=$?
        ;;

    block)
        block_action
        RETVAL=$?
        ;;

    reload)
        $0 stop
        $0 start
        RETVAL=$?
        ;;

    interfaces)
        configure_interfaces
        RETVAL=$?
        ;;

    test_interfaces)
        FWBDEBUG="echo"
        configure_interfaces
        RETVAL=$?
        ;;

    *)
        echo "Usage $0 {start|stop|status|block|reload|interfaces|test_interfaces}"
        ;;

esac

exit $RETVAL