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fwbuilder/test/ipt/firewall40.fw.orig
Vadim Kurland 99498dc90b fixes #2664 Update error message when "which" command fails. Generated 
iptables script uses "which" to check if all utilities it uses exist
on the machine.  We should also check if "which" itself exists and
issue meaningful error message if not.
2011-11-10 12:06:08 -08:00

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#!/bin/sh
#
# This is automatically generated file. DO NOT MODIFY !
#
# Firewall Builder fwb_ipt v5.0.1.3585
#
# Generated Thu Nov 10 11:58:04 2011 PST by vadim
#
# files: * firewall40.fw /etc/firewall40.fw
#
# Compiled for iptables 1.4.0
#
# more complex and realistic combination of Tag and Route rules
# firewall40:Policy:3: error: Option Route is deprecated. You can use Custom Action to generate iptables command using '-j ROUTE' target if it is supported by your firewall OS
# firewall40:Policy:4: error: Option Route is deprecated. You can use Custom Action to generate iptables command using '-j ROUTE' target if it is supported by your firewall OS
FWBDEBUG=""
PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
export PATH
LSMOD="/sbin/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 "$1"
which "$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\""
}
getnet_internal() {
dev=$1
name=$2
af=$3
L=$($IP route list proto kernel | grep $dev | grep -v default | sed 's! .*$!!')
test -z "$L" && {
eval "$name=''"
return
}
eval "${name}_list=\"$L\""
}
getaddr() {
getaddr_internal $1 $2 "-4"
}
getaddr6() {
getaddr_internal $1 $2 "-6"
}
getnet() {
getnet_internal $1 $2 "-4"
}
getnet6() {
getnet_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
which $PGM >/dev/null 2>&1 || {
echo "\"$PGM\" not found"
exit 1
}
}
check_tools() {
find_program which
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() {
:
OPTS=$1
MODULES_DIR="/lib/modules/`uname -r`/kernel/net/"
MODULES=$(find $MODULES_DIR -name '*conntrack*' \! -name '*ipv6*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')
echo $OPTS | grep -q nat && {
MODULES="$MODULES $(find $MODULES_DIR -name '*nat*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
}
echo $OPTS | grep -q ipv6 && {
MODULES="$MODULES $(find $MODULES_DIR -name nf_conntrack_ipv6|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
}
for module in $MODULES; do
if $LSMOD | grep ${module} >/dev/null; then continue; fi
$MODPROBE ${module} || exit 1
done
}
verify_interfaces() {
:
echo "Verifying interfaces: eth0 lo eth2 eth1"
for i in eth0 lo eth2 eth1 ; 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() {
:
# Configure interfaces
update_addresses_of_interface "eth0 192.0.2.1/24" ""
update_addresses_of_interface "lo 127.0.0.1/8" ""
update_addresses_of_interface "eth2 192.0.100.1/24" ""
update_addresses_of_interface "eth1 192.168.1.1/24" ""
}
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
# ================ Table 'mangle', automatic rules
$IPTABLES -t mangle -A PREROUTING -j CONNMARK --restore-mark
$IPTABLES -t mangle -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
# ================ Table 'nat', rule set NAT
#
# Rule 0 (NAT)
#
echo "Rule 0 (NAT)"
#
# Translate source address
# for outgoing connections
$IPTABLES -t nat -A POSTROUTING -o eth0 -s 192.168.1.0/24 -j SNAT --to-source 192.0.2.1
# ================ Table 'mangle', rule set Policy
#
# Rule 0 (eth0)
#
echo "Rule 0 (eth0)"
#
$IPTABLES -t mangle -A PREROUTING -i eth0 -m state --state NEW -j MARK --set-mark 1
$IPTABLES -t mangle -A PREROUTING -i eth0 -m state --state NEW -j CONNMARK --save-mark
#
# Rule 1 (eth2)
#
echo "Rule 1 (eth2)"
#
$IPTABLES -t mangle -A PREROUTING -i eth2 -m state --state NEW -j MARK --set-mark 2
$IPTABLES -t mangle -A PREROUTING -i eth2 -m state --state NEW -j CONNMARK --save-mark
#
# Rule 6 (global)
#
echo "Rule 6 (global)"
#
$IPTABLES -N Cid37084X26841.0 -t mangle
$IPTABLES -t mangle -A PREROUTING -s 192.168.1.0/24 -m state --state NEW -j Cid37084X26841.0
$IPTABLES -t mangle -A Cid37084X26841.0 -d 22.22.22.0/24 -j MARK --set-mark 8
$IPTABLES -t mangle -A Cid37084X26841.0 -d 33.33.33.0/24 -j MARK --set-mark 8
# ================ Table 'filter', rule set Policy
#
# Rule 2 (global)
#
echo "Rule 2 (global)"
#
# This permits access from internal net
# to the Internet and DMZ
$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 5 (global)
#
echo "Rule 5 (global)"
#
$IPTABLES -N RULE_5
$IPTABLES -A OUTPUT -j RULE_5
$IPTABLES -A INPUT -j RULE_5
$IPTABLES -A FORWARD -j RULE_5
$IPTABLES -A RULE_5 -j LOG --log-level info --log-prefix "RULE 5 -- DENY "
$IPTABLES -A RULE_5 -j DROP
#
# Rule 6 (global)
#
echo "Rule 6 (global)"
#
$IPTABLES -N Cid37084X26841.0
$IPTABLES -A OUTPUT -s 192.168.1.0/24 -m state --state NEW -j Cid37084X26841.0
$IPTABLES -A Cid37084X26841.0 -d 22.22.22.0/24 -j LOG --log-level info --log-prefix "RULE 6 -- CONTINUE "
$IPTABLES -A Cid37084X26841.0 -d 33.33.33.0/24 -j LOG --log-level info --log-prefix "RULE 6 -- CONTINUE "
$IPTABLES -N Cid37084X26841.1
$IPTABLES -A FORWARD -s 192.168.1.0/24 -m state --state NEW -j Cid37084X26841.1
$IPTABLES -A Cid37084X26841.1 -d 22.22.22.0/24 -j LOG --log-level info --log-prefix "RULE 6 -- CONTINUE "
$IPTABLES -A Cid37084X26841.1 -d 33.33.33.0/24 -j LOG --log-level info --log-prefix "RULE 6 -- CONTINUE "
}
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 "$cmd" in
start)
log "Activating firewall script generated Thu Nov 10 11:58:04 2011 by vadim"
check_tools
prolog_commands
check_run_time_address_table_files
load_modules "nat "
configure_interfaces
verify_interfaces
reset_all
script_body
ip_forward
epilog_commands
RETVAL=$?
;;
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
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