version 2.94, 2013/09/21 02:57:58 |
version 2.100, 2013/09/28 10:07:18 |
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# Licensed under terms of GNU General Public License. |
# Licensed under terms of GNU General Public License. |
# All rights reserved. |
# All rights reserved. |
# |
# |
# $Platon: scripts/shell/firewall/fw-universal.sh,v 2.93 2013-09-21 02:55:50 nepto Exp $ |
# $Platon: scripts/shell/firewall/fw-universal.sh,v 2.99 2013-09-28 09:25:35 nepto Exp $ |
# |
# |
# Changelog: |
# Changelog: |
# 2003-10-24 - created |
# 2003-10-24 - created |
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return; |
return; |
fi |
fi |
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print_info -en "NAT: Enabling packet forwarding..." |
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echo 1 > /proc/sys/net/ipv4/ip_forward |
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print_info " done." |
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print_info -en "NAT: Masquerading local subnet: $NAT_SUBNET_IFACE --> $NAT_LAN_IFACE" |
print_info -en "NAT: Masquerading local subnet: $NAT_SUBNET_IFACE --> $NAT_LAN_IFACE" |
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if [ "X$XEN_MODE" = "Xon" ]; then |
if [ "X$XEN_MODE" = "Xon" ]; then |
$IPTABLES -t nat -A POSTROUTING -o $NAT_LAN_IFACE -j MASQUERADE |
if [ -n "$NAT_SUBNET_SRC" ]; then |
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NAT_SUBNET_SRC="-s $NAT_SUBNET_SRC"; |
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fi |
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$IPTABLES -t nat -A POSTROUTING -o $NAT_LAN_IFACE -j MASQUERADE $NAT_SUBNET_SRC |
print_info " done." |
print_info " done." |
print_info "XEN_MODE enabled: masquerade is limited to basic functionality only"; |
print_info "XEN_MODE enabled: masquerade is limited to basic functionality only"; |
return; |
return; |
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fi |
fi |
done |
done |
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#$IPTABLES -t nat -A POSTROUTING -s $localnet -o $NAT_LAN_IFACE -j MASQUERADE |
if [ -n "$NAT_SUBNET_SRC" ]; then |
$IPTABLES -t nat -A POSTROUTING -o $NAT_LAN_IFACE -j MASQUERADE |
NAT_SUBNET_SRC="-s $NAT_SUBNET_SRC"; |
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fi |
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$IPTABLES -t nat -A POSTROUTING -o $NAT_LAN_IFACE -j MASQUERADE $NAT_SUBNET_SRC |
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print_info " done." |
print_info " done." |
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} # }}} |
} # }}} |
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# ACCEPT all packets from our IP address |
# ACCEPT selected IPs/ports if defined for interface |
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# if not defined ACCEPT all packets from our IP addresses |
allow_output() |
allow_output() |
{ # {{{ |
{ # {{{ |
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output_tcp_str=""; |
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output_udp_str=""; |
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output_icmp_str=""; |
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# Povolíme odchozí pakety, které mají naše IP adresy |
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print_info -en "Accepting OUTPUT packets from" |
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for iface in $INTERFACES; do |
for iface in $INTERFACES; do |
riface="IFname_$iface"; |
riface="IFname_$iface"; |
IPS="IP_$iface"; |
IPS="IP_$iface"; |
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accept_output_tcp="${iface}_ACCEPT_OUTPUT_TCP" |
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ACCEPT_OUTPUT_TCP="${!accept_output_tcp}" |
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accept_output_udp="${iface}_ACCEPT_OUTPUT_UDP" |
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ACCEPT_OUTPUT_UDP="${!accept_output_udp}" |
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# TCP |
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if [ -z "$ACCEPT_OUTPUT_TCP" ]; then |
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for ip in ${!IPS}; do |
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output_tcp_str="$output_tcp_str $ip(${!riface})"; |
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$IPTABLES -A OUTPUT -p TCP -o ${!riface} -s $ip -j ACCEPT |
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done |
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else |
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print_info -en "$iface: Accepting OUTPUT TCP connections to ports:" |
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for port in $ACCEPT_OUTPUT_TCP; do |
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dest_ip="" |
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eval `echo $port | awk -v FS=: '/:/ { printf "dest_ip=\"%s\"; port=\"%s\";", $1, $2; }'` |
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if [ -n "$dest_ip" -a "$port" = "0" ]; then |
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port="ALL"; |
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fi |
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print_info -en " $port"`[ ! -z "$dest_ip" ] && echo "[$dest_ip]"` |
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if [ -z "$dest_ip" ]; then |
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$IPTABLES -A OUTPUT -o ${!riface} -p TCP --dport $port -j ACCEPT |
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else |
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if [ "$port" = "ALL" ]; then |
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$IPTABLES -A OUTPUT -o ${!riface} -d $dest_ip -p TCP -j ACCEPT |
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else |
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$IPTABLES -A OUTPUT -o ${!riface} -d $dest_ip -p TCP --dport $port -j ACCEPT |
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fi |
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fi |
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done |
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print_info " done." |
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fi |
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# UDP |
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if [ -z "$ACCEPT_OUTPUT_UDP" ]; then |
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for ip in ${!IPS}; do |
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output_udp_str="$output_udp_str $ip(${!riface})"; |
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$IPTABLES -A OUTPUT -p UDP -o ${!riface} -s $ip -j ACCEPT |
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done |
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else |
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print_info -en "$iface: Accepting OUTPUT UDP connections to ports:" |
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for port in $ACCEPT_OUTPUT_UDP; do |
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dest_ip="" |
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eval `echo $port | awk -v FS=: '/:/ { printf "dest_ip=\"%s\"; port=\"%s\";", $1, $2; }'` |
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if [ -n "$dest_ip" -a "$port" = "0" ]; then |
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port="ALL"; |
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fi |
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print_info -en " $port"`[ ! -z "$dest_ip" ] && echo "[$dest_ip]"` |
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if [ -z "$dest_ip" ]; then |
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$IPTABLES -A OUTPUT -o ${!riface} -p UDP --dport $port -j ACCEPT |
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else |
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if [ "$port" = "ALL" ]; then |
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$IPTABLES -A OUTPUT -o ${!riface} -d $dest_ip -p UDP -j ACCEPT |
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else |
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$IPTABLES -A OUTPUT -o ${!riface} -d $dest_ip -p UDP --dport $port -j ACCEPT |
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fi |
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fi |
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done |
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print_info " done." |
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fi |
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# ICMP |
for ip in ${!IPS}; do |
for ip in ${!IPS}; do |
print_info -en " $ip($iface)" |
output_icmp_str="$output_icmp_str $ip(${!riface})"; |
$IPTABLES -A OUTPUT -o ${!riface} -s $ip -j ACCEPT |
$IPTABLES -A OUTPUT -p ICMP -o ${!riface} -s $ip -j ACCEPT |
done |
done |
done; |
done |
print_info " done."; |
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if [ -n "$output_tcp_str" ]; then |
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print_info "Accepting OUTPUT TCP packets from $output_tcp_str done." |
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fi |
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if [ -n "$output_udp_str" ]; then |
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print_info "Accepting OUTPUT UDP packets from $output_udp_str done." |
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fi |
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if [ -n "$output_icmp_str" ]; then |
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print_info "Accepting OUTPUT ICMP packets from $output_icmp_str done." |
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fi |
} # }}} |
} # }}} |
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allow_icmp() |
allow_icmp() |
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allow_icmp |
allow_icmp |
accept_loopback |
accept_loopback |
masquerade |
masquerade |
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forward_on |
log_input_drop |
log_input_drop |
log_output_drop |
log_output_drop |
log_forward_drop |
log_forward_drop |
forward_on |
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do_ip_accounting |
do_ip_accounting |
shaping_off |
shaping_off |
shaping_on |
shaping_on |