| verzia 2.6, 2005/01/02 02:37:12 |
verzia 2.7, 2005/01/02 13:31:46 |
|
|
| # 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 2.5 2005/01/02 01:49:01 rajo Exp $ |
# $Platon: scripts/shell/firewall/fw-universal.sh,v 2.6 2005/01/02 02:37:12 rajo Exp $ |
| # |
# |
| # Changelog: |
# Changelog: |
| # 2004-11-14 - created |
# 2004-11-14 - created |
| Riadok 276 mangle_output() |
|
| Riadok 276 mangle_output() |
|
| masquerade() |
masquerade() |
| { # {{{ |
{ # {{{ |
| if [ ! -z "$NAT_LAN_IFACE" ]; then |
if [ ! -z "$NAT_LAN_IFACE" ]; then |
| echo -en "Masquerading local subnet: $NAT_SUBNET_IFACE --> $NAT_LAN_IFACE" |
echo -en "NAT: Masquerading local subnet: $NAT_SUBNET_IFACE --> $NAT_LAN_IFACE" |
| |
|
| ip="IP_$NAT_SUBNET_IFACE"; |
ip="IP_$NAT_SUBNET_IFACE"; |
| netmask="Mask_$NAT_SUBNET_IFACE" |
netmask="Mask_$NAT_SUBNET_IFACE" |
|
|
| |
|
| $IPTABLES -t nat -A POSTROUTING -s $localnet -o $NAT_LAN_IFACE -j MASQUERADE |
$IPTABLES -t nat -A POSTROUTING -s $localnet -o $NAT_LAN_IFACE -j MASQUERADE |
| |
|
| |
echo " done." |
| |
|
| # don't forward Miscrosoft protocols - NOT RFC compliant packets |
# don't forward Miscrosoft protocols - NOT RFC compliant packets |
| if [ ! -z "$NAT_FORWARD_MICROSOFT" ]; then |
if [ ! -z "$NAT_FORWARD_MICROSOFT" ]; then |
| if [ "x$NAT_FORWARD_MICROSOFT" = "xno" ]; then |
if [ "x$NAT_FORWARD_MICROSOFT" = "xno" ]; then |
|
|
| fi |
fi |
| |
|
| if [ ! -z "$NAT_FORWARD_TCP_PORTS" ]; then |
if [ ! -z "$NAT_FORWARD_TCP_PORTS" ]; then |
| echo -en "Accepting FORWARD TCP ports:" |
echo -en "\tAccepting FORWARD TCP ports:" |
| for port in $NAT_FORWARD_TCP_PORTS; do |
for port in $NAT_FORWARD_TCP_PORTS; do |
| echo -en " $port" |
echo -en " $port" |
| $IPTABLES -A FORWARD -p TCP --dport $port -m state --state NEW -j ACCEPT |
$IPTABLES -A FORWARD -p TCP --dport $port -m state --state NEW -j ACCEPT |
|
|
| fi |
fi |
| |
|
| if [ ! -z "$NAT_FORWARD_UDP_PORTS" ]; then |
if [ ! -z "$NAT_FORWARD_UDP_PORTS" ]; then |
| echo -en "Accepting FORWARD UDP ports:" |
echo -en "\tAccepting FORWARD UDP ports:" |
| for port in $NAT_FORWARD_UDP_PORTS; do |
for port in $NAT_FORWARD_UDP_PORTS; do |
| echo -en " $port" |
echo -en " $port" |
| $IPTABLES -A FORWARD -p UDP --dport $port -m state --state NEW -j ACCEPT |
$IPTABLES -A FORWARD -p UDP --dport $port -m state --state NEW -j ACCEPT |
|
|
| echo " done." |
echo " done." |
| fi |
fi |
| |
|
| |
echo -en "\tAccepting ICMP packets:" |
| |
for type in $ACCEPT_ICMP_PACKETS; do |
| |
echo -en " $type" |
| |
$IPTABLES -A FORWARD -p ICMP --icmp-type $type -j ACCEPT |
| |
done |
| |
echo " done." |
| |
|
| # Keep state of connections from private subnets |
# Keep state of connections from private subnets |
| $IPTABLES -A OUTPUT -m state --state NEW -o $NAT_LAN_IFACE -j ACCEPT |
$IPTABLES -A OUTPUT -m state --state NEW -o $NAT_LAN_IFACE -j ACCEPT |
| #$IPTABLES -A FORWARD -m state --state NEW -o $NAT_LAN_IFACE -j ACCEPT |
#$IPTABLES -A FORWARD -m state --state NEW -o $NAT_LAN_IFACE -j ACCEPT |
| $IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT |
$IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT |
| |
|
| echo " done." |
|
| |
|
| fi |
fi |
| } # }}} |
} # }}} |
| |
|
|
|
| $IPTABLES -A INPUT -p TCP --dport 113 -j REJECT --reject-with tcp-reset #AUTH server |
$IPTABLES -A INPUT -p TCP --dport 113 -j REJECT --reject-with tcp-reset #AUTH server |
| |
|
| # accept only allowed ICMP packets |
# accept only allowed ICMP packets |
| for type in echo-reply destination-unreachable echo-request time-exceeded; do |
for type in $ACCEPT_ICMP_PACKETS; do |
| echo -en " $type" |
echo -en " $type" |
| for iface in $INTERFACES; do |
for iface in $INTERFACES; do |
| ip="IP_$iface"; |
ip="IP_$iface"; |