mirror of
https://github.com/fwbuilder/fwbuilder
synced 2026-03-21 02:37:16 +01:00
d0ae7bac01
inbound and outbound interface columns in iptables NAT rules". This also addresses SF feature requests 1954286 "DNAT with interface as condition not possible" and 621023 "manipulating interface in NAT rule".
569 lines
16 KiB
Bash
Executable File
569 lines
16 KiB
Bash
Executable File
#!/bin/sh
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#
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# This is automatically generated file. DO NOT MODIFY !
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#
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# Firewall Builder fwb_ipt v4.2.0.3480
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#
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# Generated Thu Feb 17 17:34:01 2011 PST by vadim
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#
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# files: * firewall19.fw /etc/fw/firewall19.fw
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#
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# Compiled for iptables (any version)
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#
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# testing different cmbinations of objects in the policy rules on loopback interface
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# firewall19:Policy:10: warning: Rule action 'Reject' with TCP RST can be used only with TCP services.
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FWBDEBUG=""
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PATH="/sbin:/usr/sbin:/bin:/usr/bin:${PATH}"
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export PATH
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LSMOD="/sbin/lsmod"
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MODPROBE="/sbin/modprobe"
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IPTABLES="/sbin/iptables"
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IP6TABLES="/sbin/ip6tables"
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IPTABLES_RESTORE="/sbin/iptables-restore"
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IP6TABLES_RESTORE="/sbin/ip6tables-restore"
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IP="/sbin/ip"
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IFCONFIG="/sbin/ifconfig"
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VCONFIG="/sbin/vconfig"
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BRCTL="/sbin/brctl"
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IFENSLAVE="/sbin/ifenslave"
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IPSET="/usr/sbin/ipset"
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LOGGER="/usr/bin/logger"
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log() {
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echo "$1"
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command -v "$LOGGER" &>/dev/null && $LOGGER -p info "$1"
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}
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getInterfaceVarName() {
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echo $1 | sed 's/\./_/'
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}
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getaddr_internal() {
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dev=$1
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name=$2
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af=$3
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L=$($IP $af addr show dev $dev | sed -n '/inet/{s!.*inet6* !!;s!/.*!!p}' | sed 's/peer.*//')
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test -z "$L" && {
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eval "$name=''"
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return
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}
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eval "${name}_list=\"$L\""
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}
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getaddr() {
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getaddr_internal $1 $2 "-4"
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}
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getaddr6() {
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getaddr_internal $1 $2 "-6"
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}
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# function getinterfaces is used to process wildcard interfaces
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getinterfaces() {
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NAME=$1
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$IP link show | grep ": $NAME" | while read L; do
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OIFS=$IFS
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IFS=" :"
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set $L
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IFS=$OIFS
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echo $2
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done
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}
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diff_intf() {
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func=$1
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list1=$2
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list2=$3
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cmd=$4
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for intf in $list1
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do
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echo $list2 | grep -q $intf || {
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# $vlan is absent in list 2
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$func $intf $cmd
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}
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done
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}
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find_program() {
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PGM=$1
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command -v $PGM &>/dev/null || {
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echo "$PGM not found"
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exit 1
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}
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}
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check_tools() {
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find_program $IPTABLES
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find_program $MODPROBE
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find_program $IP
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}
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reset_iptables_v4() {
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$IPTABLES -P OUTPUT DROP
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$IPTABLES -P INPUT DROP
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$IPTABLES -P FORWARD DROP
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cat /proc/net/ip_tables_names | while read table; do
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$IPTABLES -t $table -L -n | while read c chain rest; do
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if test "X$c" = "XChain" ; then
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$IPTABLES -t $table -F $chain
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fi
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done
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$IPTABLES -t $table -X
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done
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}
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reset_iptables_v6() {
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$IP6TABLES -P OUTPUT DROP
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$IP6TABLES -P INPUT DROP
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$IP6TABLES -P FORWARD DROP
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cat /proc/net/ip6_tables_names | while read table; do
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$IP6TABLES -t $table -L -n | while read c chain rest; do
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if test "X$c" = "XChain" ; then
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$IP6TABLES -t $table -F $chain
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fi
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done
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$IP6TABLES -t $table -X
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done
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}
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P2P_INTERFACE_WARNING=""
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missing_address() {
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address=$1
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cmd=$2
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oldIFS=$IFS
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IFS="@"
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set $address
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addr=$1
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interface=$2
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IFS=$oldIFS
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$IP addr show dev $interface | grep -q POINTOPOINT && {
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test -z "$P2P_INTERFACE_WARNING" && echo "Warning: Can not update address of interface $interface. fwbuilder can not manage addresses of point-to-point interfaces yet"
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P2P_INTERFACE_WARNING="yes"
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return
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}
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test "$cmd" = "add" && {
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echo "# Adding ip address: $interface $addr"
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echo $addr | grep -q ':' && {
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$FWBDEBUG $IP addr $cmd $addr dev $interface
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} || {
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$FWBDEBUG $IP addr $cmd $addr broadcast + dev $interface
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}
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}
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test "$cmd" = "del" && {
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echo "# Removing ip address: $interface $addr"
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$FWBDEBUG $IP addr $cmd $addr dev $interface
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}
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$FWBDEBUG $IP link set $interface up
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}
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list_addresses_by_scope() {
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interface=$1
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scope=$2
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ignore_list=$3
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$IP addr ls dev $interface | \
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awk -v IGNORED="$ignore_list" -v SCOPE="$scope" \
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'BEGIN {
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split(IGNORED,ignored_arr);
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for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
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}
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(/inet |inet6 / && $0 ~ SCOPE && !($2 in ignored_dict)) {print $2;}' | \
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while read addr; do
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echo "${addr}@$interface"
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done | sort
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}
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update_addresses_of_interface() {
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ignore_list=$2
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set $1
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interface=$1
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shift
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FWB_ADDRS=$(
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for addr in $*; do
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echo "${addr}@$interface"
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done | sort
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)
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CURRENT_ADDRS_ALL_SCOPES=""
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CURRENT_ADDRS_GLOBAL_SCOPE=""
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$IP link show dev $interface >/dev/null 2>&1 && {
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CURRENT_ADDRS_ALL_SCOPES=$(list_addresses_by_scope $interface 'scope .*' "$ignore_list")
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CURRENT_ADDRS_GLOBAL_SCOPE=$(list_addresses_by_scope $interface 'scope global' "$ignore_list")
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} || {
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echo "# Interface $interface does not exist"
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# Stop the script if we are not in test mode
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test -z "$FWBDEBUG" && exit 1
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}
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diff_intf missing_address "$FWB_ADDRS" "$CURRENT_ADDRS_ALL_SCOPES" add
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diff_intf missing_address "$CURRENT_ADDRS_GLOBAL_SCOPE" "$FWB_ADDRS" del
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}
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clear_addresses_except_known_interfaces() {
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$IP link show | sed 's/://g' | awk -v IGNORED="$*" \
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'BEGIN {
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split(IGNORED,ignored_arr);
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for (a in ignored_arr) {ignored_dict[ignored_arr[a]]=1;}
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}
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(/state/ && !($2 in ignored_dict)) {print $2;}' | \
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while read intf; do
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echo "# Removing addresses not configured in fwbuilder from interface $intf"
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$FWBDEBUG $IP addr flush dev $intf scope global
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$FWBDEBUG $IP link set $intf down
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done
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}
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check_file() {
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test -r "$2" || {
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echo "Can not find file $2 referenced by address table object $1"
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exit 1
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}
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}
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check_run_time_address_table_files() {
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:
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}
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load_modules() {
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:
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OPTS=$1
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MODULES_DIR="/lib/modules/`uname -r`/kernel/net/"
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MODULES=$(find $MODULES_DIR -name '*conntrack*' \! -name '*ipv6*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')
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echo $OPTS | grep -q nat && {
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MODULES="$MODULES $(find $MODULES_DIR -name '*nat*'|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
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}
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echo $OPTS | grep -q ipv6 && {
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MODULES="$MODULES $(find $MODULES_DIR -name nf_conntrack_ipv6|sed -e 's/^.*\///' -e 's/\([^\.]\)\..*/\1/')"
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}
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for module in $MODULES; do
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if $LSMOD | grep ${module} >/dev/null; then continue; fi
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$MODPROBE ${module} || exit 1
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done
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}
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verify_interfaces() {
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:
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echo "Verifying interfaces: eth2 eth0 eth1 lo ppp0"
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for i in eth2 eth0 eth1 lo ppp0 ; do
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$IP link show "$i" > /dev/null 2>&1 || {
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log "Interface $i does not exist"
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exit 1
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}
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done
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}
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prolog_commands() {
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echo "Running prolog script"
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}
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epilog_commands() {
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echo "Running epilog script"
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}
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run_epilog_and_exit() {
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epilog_commands
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exit $1
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}
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configure_interfaces() {
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:
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# Configure interfaces
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update_addresses_of_interface "eth2 66.66.66.1/25" ""
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update_addresses_of_interface "eth0 192.168.1.1/24" ""
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update_addresses_of_interface "eth1 66.66.66.130/25" ""
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update_addresses_of_interface "lo 127.0.0.1/8" ""
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getaddr ppp0 i_ppp0
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getaddr6 ppp0 i_ppp0_v6
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}
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script_body() {
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echo 30 > /proc/sys/net/ipv4/tcp_fin_timeout
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echo 1800 > /proc/sys/net/ipv4/tcp_keepalive_intvl
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# ================ IPv4
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# ================ Table 'filter', automatic rules
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# accept established sessions
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$IPTABLES -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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$IPTABLES -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
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$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
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# ================ Table 'filter', rule set Policy
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#
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# Rule 0 (lo)
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#
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echo "Rule 0 (lo)"
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#
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$IPTABLES -A INPUT -i lo -m state --state NEW -j ACCEPT
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for i_ppp0 in $i_ppp0_list
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do
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test -n "$i_ppp0" && $IPTABLES -A OUTPUT -o lo -d $i_ppp0 -m state --state NEW -j ACCEPT
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done
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$IPTABLES -A OUTPUT -o lo -d 66.66.66.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 66.66.66.130 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 127.0.0.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 192.168.1.1 -m state --state NEW -j ACCEPT
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#
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# Rule 1 (lo)
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#
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echo "Rule 1 (lo)"
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#
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$IPTABLES -A INPUT -i lo -d 66.66.66.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A INPUT -i lo -d 192.168.1.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A INPUT -i lo -d 66.66.66.130 -m state --state NEW -j ACCEPT
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$IPTABLES -A INPUT -i lo -d 127.0.0.1 -m state --state NEW -j ACCEPT
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for i_ppp0 in $i_ppp0_list
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do
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test -n "$i_ppp0" && $IPTABLES -A INPUT -i lo -d $i_ppp0 -m state --state NEW -j ACCEPT
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done
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$IPTABLES -A OUTPUT -o lo -d 66.66.66.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 192.168.1.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 66.66.66.130 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 127.0.0.1 -m state --state NEW -j ACCEPT
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for i_ppp0 in $i_ppp0_list
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do
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test -n "$i_ppp0" && $IPTABLES -A OUTPUT -o lo -d $i_ppp0 -m state --state NEW -j ACCEPT
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done
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#
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# Rule 2 (lo)
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#
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echo "Rule 2 (lo)"
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#
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$IPTABLES -A INPUT -i lo -d 192.168.1.1 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -d 192.168.1.1 -m state --state NEW -j ACCEPT
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#
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# Rule 3 (lo)
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#
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echo "Rule 3 (lo)"
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#
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$IPTABLES -A INPUT -i lo -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -o lo -m state --state NEW -j ACCEPT
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#
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# Rule 4 (global)
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#
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echo "Rule 4 (global)"
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#
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$IPTABLES -A OUTPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 2/second -j ACCEPT
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$IPTABLES -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 2/second -j ACCEPT
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$IPTABLES -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -m limit --limit 2/second -j ACCEPT
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#
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# Rule 5 (global)
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#
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echo "Rule 5 (global)"
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#
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$IPTABLES -N RULE_5
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$IPTABLES -A OUTPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j RULE_5
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$IPTABLES -A INPUT -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j RULE_5
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$IPTABLES -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j RULE_5
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$IPTABLES -A RULE_5 -j LOG --log-level info --log-prefix "RULE 5 -- DENY "
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$IPTABLES -A RULE_5 -j DROP
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#
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# Rule 6 (global)
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#
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echo "Rule 6 (global)"
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#
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$IPTABLES -N Cid3EFBA6FE.0
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$IPTABLES -A OUTPUT -j Cid3EFBA6FE.0
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$IPTABLES -A INPUT -j Cid3EFBA6FE.0
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$IPTABLES -A FORWARD -j Cid3EFBA6FE.0
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$IPTABLES -A Cid3EFBA6FE.0 -p tcp -m tcp --tcp-flags SYN,RST,ACK SYN -j RETURN
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$IPTABLES -A Cid3EFBA6FE.0 -j ACCEPT
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#
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# Rule 7 (global)
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#
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echo "Rule 7 (global)"
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#
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$IPTABLES -A INPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 5190 --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 5190 --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j ACCEPT
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$IPTABLES -A FORWARD -p tcp -m tcp -s 192.168.1.0/24 --dport 5190 --tcp-flags SYN,RST,ACK SYN -m state --state NEW -j ACCEPT
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#
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# Rule 8 (global)
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#
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echo "Rule 8 (global)"
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#
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$IPTABLES -A INPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 5190 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-host-prohibited
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$IPTABLES -A OUTPUT -p tcp -m tcp -s 192.168.1.0/24 --dport 5190 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-host-prohibited
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$IPTABLES -A FORWARD -p tcp -m tcp -s 192.168.1.0/24 --dport 5190 --tcp-flags SYN,RST,ACK SYN -j REJECT --reject-with icmp-host-prohibited
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#
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# Rule 9 (global)
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#
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echo "Rule 9 (global)"
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#
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$IPTABLES -N Cid40038EB9.0
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$IPTABLES -A OUTPUT -j Cid40038EB9.0
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$IPTABLES -A INPUT -j Cid40038EB9.0
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$IPTABLES -A FORWARD -j Cid40038EB9.0
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$IPTABLES -A Cid40038EB9.0 -p tcp -m tcp --dport 5190 --tcp-flags SYN,RST,ACK SYN -j RETURN
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$IPTABLES -A Cid40038EB9.0 -j REJECT --reject-with icmp-host-prohibited
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#
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# Rule 10 (global)
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#
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echo "Rule 10 (global)"
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#
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# firewall19:Policy:10: warning: Rule action 'Reject' with TCP RST can be used only with TCP services.
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$IPTABLES -A INPUT -s 192.168.1.0/24 -p tcp ! --syn -dport 5190 -m state --state NEW -j REJECT --reject-with icmp-host-prohibited
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# firewall19:Policy:10: warning: Rule action 'Reject' with TCP RST can be used only with TCP services.
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$IPTABLES -A OUTPUT -s 192.168.1.0/24 -p tcp ! --syn -dport 5190 -m state --state NEW -j REJECT --reject-with icmp-host-prohibited
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# firewall19:Policy:10: warning: Rule action 'Reject' with TCP RST can be used only with TCP services.
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$IPTABLES -A FORWARD -s 192.168.1.0/24 -p tcp ! --syn -dport 5190 -m state --state NEW -j REJECT --reject-with icmp-host-prohibited
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#
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# Rule 11 (global)
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#
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echo "Rule 11 (global)"
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#
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$IPTABLES -A OUTPUT -p tcp -m tcp -d 127.0.0.1 --dport 3128 -m state --state NEW -j ACCEPT
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$IPTABLES -A OUTPUT -p tcp -m tcp -d 66.66.66.130 --dport 3128 -m state --state NEW -j ACCEPT
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$IPTABLES -A INPUT -p tcp -m tcp -d 127.0.0.1 --dport 3128 -m state --state NEW -j ACCEPT
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$IPTABLES -A INPUT -p tcp -m tcp -d 66.66.66.130 --dport 3128 -m state --state NEW -j ACCEPT
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#
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# Rule 12 (global)
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#
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echo "Rule 12 (global)"
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#
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$IPTABLES -N RULE_12
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$IPTABLES -A OUTPUT -j RULE_12
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$IPTABLES -A INPUT -j RULE_12
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$IPTABLES -A FORWARD -j RULE_12
|
|
$IPTABLES -A RULE_12 -j LOG --log-level info --log-prefix "RULE 12 -- DENY "
|
|
$IPTABLES -A RULE_12 -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 "$cmd" in
|
|
start)
|
|
log "Activating firewall script generated Thu Feb 17 17:34:01 2011 by vadim"
|
|
check_tools
|
|
prolog_commands
|
|
check_run_time_address_table_files
|
|
|
|
load_modules " "
|
|
configure_interfaces
|
|
verify_interfaces
|
|
|
|
reset_all
|
|
|
|
script_body
|
|
ip_forward
|
|
epilog_commands
|
|
RETVAL=$?
|
|
;;
|
|
|
|
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 |