# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo eth2 provider
iface lo inet loopback

# PPPoE connection
iface provider inet ppp
    pre-up /sbin/ifconfig eth3 up
    provider provider

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo eth2 provider
iface lo inet loopback

# PPPoE connection
iface provider inet ppp
    pre-up /sbin/ifconfig eth3 up
    provider provider

iface eth2 inet static
        address 192.168.111.1
    netmask 255.255.255.0
    broadcast 192.168.111.255
    network 192.168.111.0

#
# Sample configuration file for ISC dhcpd for Debian
#
#

# The ddns-updates-style parameter controls whether or not the server will
# attempt to do a DNS update when a lease is confirmed. We default to the
# behavior of the version 2 packages ('none', since DHCP v2 didn't
# have support for DDNS.)
ddns-update-style none;

# option definitions common to all supported networks...
option domain-name "example.org";
option domain-name-servers ns1.example.org, ns2.example.org;

default-lease-time 600;
max-lease-time 7200;

# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
#authoritative;

# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
log-facility local7;

# No service will be given on this subnet, but declaring it helps the
# DHCP server to understand the network topology.

#subnet 10.152.187.0 netmask 255.255.255.0 {
#}

# This is a very basic subnet declaration.

#subnet 10.254.239.0 netmask 255.255.255.224 {
#  range 10.254.239.10 10.254.239.20;
#  option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
#}

# This declaration allows BOOTP clients to get dynamic addresses,
# which we don't really recommend.

#subnet 10.254.239.32 netmask 255.255.255.224 {
#  range dynamic-bootp 10.254.239.40 10.254.239.60;
#  option broadcast-address 10.254.239.31;
#  option routers rtr-239-32-1.example.org;
#}

# A slightly different configuration for an internal subnet.
#subnet 10.5.5.0 netmask 255.255.255.224 {
#  range 10.5.5.26 10.5.5.30;
#  option domain-name-servers ns1.internal.example.org;
#  option domain-name "internal.example.org";
#  option routers 10.5.5.1;
#  option broadcast-address 10.5.5.31;
#  default-lease-time 600;
#  max-lease-time 7200;
#}

# Hosts which require special configuration options can be listed in
# host statements.   If no address is specified, the address will be
# allocated dynamically (if possible), but the host-specific information
# will still come from the host declaration.

#host passacaglia {
#  hardware ethernet 0:0:c0:5d:bd:95;
#  filename "vmunix.passacaglia";
#  server-name "toccata.fugue.com";
#}

# Fixed IP addresses can also be specified for hosts.   These addresses
# should not also be listed as being available for dynamic assignment.
# Hosts for which fixed IP addresses have been specified can boot using
# BOOTP or DHCP.   Hosts for which no fixed address is specified can only
# be booted with DHCP, unless there is an address range on the subnet
# to which a BOOTP client is connected which has the dynamic-bootp flag
# set.
#host fantasia {
#  hardware ethernet 08:00:07:26:c0:a5;
#  fixed-address fantasia.fugue.com;
#}

# You can declare a class of clients and then do address allocation
# based on that.   The example below shows a case where all clients
# in a certain class get addresses on the 10.17.224/24 subnet, and all
# other clients get addresses on the 10.0.29/24 subnet.

#class "foo" {
#  match if substring (option vendor-class-identifier, 0, 4) = "SUNW";
#}

#shared-network 224-29 {
#  subnet 10.17.224.0 netmask 255.255.255.0 {
#    option routers rtr-224.example.org;
#  }
#  subnet 10.0.29.0 netmask 255.255.255.0 {
#    option routers rtr-29.example.org;
#  }
#  pool {
#    allow members of "foo";
#    range 10.17.224.10 10.17.224.250;
#  }
#  pool {
#    deny members of "foo";
#    range 10.0.29.10 10.0.29.230;
#  }
#}
# 192.168.111.0
subnet 192.168.111.0 netmask 255.255.255.0 {
    option domain-name-servers 78.110.144.2 , 78.110.145.2;
    range 192.168.111.100 192.168.111.200;
    }

named.conf.options:

, где 78.110.144.2, 145.2 - dns провайдера

naned.conf.local:

named.conf.default-zones:

named.conf:

#!/bin/sh

# переменные
IPTABLES="iptables"
ROUTE="route"
wan="ppp0"
lan="eth2"
ovpn="tap0"
PPTP="ppp0"
server="192.168.111.1"

# очищаем все настройки
$IPTABLES -F
$IPTABLES -X
$IPTABLES -t nat -F
$IPTABLES -t nat -X
$IPTABLES -t mangle -F
$IPTABLES -t mangle -X
$IPTABLES -P INPUT DROP
$IPTABLES -P FORWARD DROP
$IPTABLES -P OUTPUT ACCEPT

#активируем форвардинг пакетов
echo 1 > /proc/sys/net/ipv4/ip_forward

# Всегда отвечать на ping, но не больше чем на 10 пакетов на wan интерфейс
$IPTABLES -A INPUT -p icmp -j ACCEPT
$IPTABLES -I INPUT -i $wan -p icmp -m icmp -m recent --set --name PING --rsource
$IPTABLES -I INPUT -i $wan -p icmp -m icmp -m recent --update --seconds 180 --hitcount 10 --name PING --rsource -j DROP

# Всегда принимаем трафик на loopback-интерфейсе
$IPTABLES -A INPUT -i lo -j ACCEPT

# Разрешить соединение OpenVPN клиентов с внутренней сетью и обратно
$IPTABLES -A FORWARD -i $ovpn -o $lan -j ACCEPT
$IPTABLES -A FORWARD -i $lan -o $ovpn -j ACCEPT

# Разрешить соединение PPTP клиентов с внутренней сетью и обратно
#$IPTABLES -A FORWARD -i $PPTP -o $lan -j ACCEPT
#$IPTABLES -A FORWARD -i $lan -o $PPTP -j ACCEPT

# Разрешаем соединения, которые инициированы внутри PPTP, OVPN сетей
#$IPTABLES -A INPUT -m state --state NEW -i $PPTP -j ACCEPT
$IPTABLES -A INPUT -m state --state NEW -i $ovpn -j ACCEPT

# Разрешаем соединения, которые уже активны
$IPTABLES -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

# Разрешаем соединения, которые инициированы внутри lan сети
$IPTABLES -A INPUT -m state --state NEW -i $lan -j ACCEPT
$IPTABLES -A FORWARD -i $wan -o $lan -m state --state ESTABLISHED,RELATED -j ACCEPT

# Разрешаем доступ из LAN-сети к внешнему миру
$IPTABLES -A FORWARD -i $lan -o $wan -j ACCEPT

# Masquerade скрываем внутрених клиентов от провайдера
$IPTABLES -t nat -A POSTROUTING -o $wan -j MASQUERADE
$IPTABLES -t mangle -A PREROUTING -i $wan -j TTL --ttl-set 64

# Запрещаем форвардинг из внешнего мира во внутреннюю сеть
$IPTABLES -A FORWARD -i $wan -o $lan -j REJECT

# заворачиваем пакеты из внутренней сети lan на 53 порты на сервера
#$IPTABLES -t nat -A PREROUTING -i $lan -p udp -m multiport --dport 53 -j DNAT --to $server:53

# заворачиваем пакеты на 80 и 8080 порты на прокси. У кого нет - строчку удаляем.
#$IPTABLES -t nat -A PREROUTING -i $lan -p tcp -m multiport --dport 80,8080 -j DNAT --to $server:3128

# Перенаправляем пакеты на OpenVPN клиентов
#$IPTABLES -t nat -A PREROUTING -s 192.168.111.0/24 -j DNAT --to 10.10.10.50
#$ROUTE add -net 192.168.111.0 netmask 255.255.255.0 gw 10.10.10.50 $ovpn
# $IPTABLES -t nat -A PREROUTING -i $lan -s 192.168.0.0/24 -p tcp -j DNAT --to 10.10.10.20

# Разрешаем соединения с наружи с wan
# SSH но не больше 3 новых подключений с одного внешнего IP
$IPTABLES -I INPUT -i $wan -p tcp --dport 22 -j ACCEPT
$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 22 -m state --state NEW -m recent --set --name SSH --rsource
$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 22 -m state --state NEW -m recent --update --seconds 180 --hitcount 4 --name SSH --rsource -j DROP

# FTP но не больше 3 новых подключений с одного внешнего IP
$IPTABLES -I INPUT -i $wan -p tcp --dport 21 -j ACCEPT
$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 21 -m state --state NEW -m recent --set --name FTP --rsource
$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 21 -m state --state NEW -m recent --update --seconds 180 --hitcount 4 --name FTP --rsource -j DROP

# DNS
#$IPTABLES -I INPUT -i $wan -p tcp --dport 53 -j ACCEPT
$IPTABLES -I INPUT -i $wan -p udp --dport 53 -j ACCEPT

# HTTP
$IPTABLES -I INPUT -i $wan -p tcp --dport 80 -j ACCEPT

# OpenVPN но не больше 3 новых подключений с одного внешнего IP
$IPTABLES -I INPUT -i $wan -p tcp --dport 1777 -j ACCEPT
$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 1777 -m state --state NEW -m recent --set --name OpenVPN --rsource
$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 1777 -m state --state NEW -m recent --update --seconds 180 --hitcount 4 --name OpenVPN --rsource -j DROP

# PPTPd но не больше 3 новых подключений с одного внешнего IP
#$IPTABLES -I INPUT -i $wan -p tcp --dport 1723 -j ACCEPT
#$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 1723 -m state --state NEW -m recent --set --name PPTP --rsource
#$IPTABLES -I INPUT -i $wan -p tcp -m tcp --dport 1723 -m state --state NEW -m recent --update --seconds 180 --hitcount 4 --name PPTP --rsource -j DROP

echo firewall rules accepted

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo eth2 provider
iface lo inet loopback

# PPPoE connection
iface provider inet ppp
    pre-up /sbin/ifconfig eth3 up
    provider provider

iface eth2 inet static
        address 192.168.111.1
    netmask 255.255.255.0
    broadcast 192.168.111.255
    network 192.168.111.0
    post-up /etc/init.d/nat-up