Initial commit
This commit is contained in:
120
router/add_iptables_rules.sh
Normal file
120
router/add_iptables_rules.sh
Normal file
@ -0,0 +1,120 @@
|
||||
#!/bin/bash
|
||||
|
||||
##### Port forwarding activation #####
|
||||
|
||||
echo 1 > /proc/sys/net/ipv4/ip_forward
|
||||
|
||||
##### Variables definitions #####
|
||||
|
||||
## WAN Router Interface
|
||||
WanInt="eth0"
|
||||
## LAN Router Interface
|
||||
LanInt="eth1"
|
||||
## Network LAN
|
||||
LanNet="192.168.0.0/24"
|
||||
|
||||
## WAN Router IP
|
||||
WanIP="10.0.0.2"
|
||||
## LAN Router IP
|
||||
LanIP="192.168.0.2"
|
||||
## HAProxy IP
|
||||
HAProxyIP="192.168.0.3"
|
||||
|
||||
DNSPort="53"
|
||||
HTTPPort="80"
|
||||
HTTPSPort="443"
|
||||
|
||||
DNS1="XXX.XXX.XXX.XXX"
|
||||
DNS2="XXX.XXX.XXX.XXX"
|
||||
|
||||
##### CLEAN ALL RULES & DROP IPV4 AND IPV6 PACKETS #####
|
||||
|
||||
## Delete all existing rules.
|
||||
iptables -F
|
||||
iptables -X
|
||||
iptables -t nat -F
|
||||
iptables -t nat -X
|
||||
iptables -t mangle -F
|
||||
iptables -t mangle -X
|
||||
|
||||
ip6tables -F
|
||||
ip6tables -X
|
||||
ip6tables -t nat -F
|
||||
ip6tables -t nat -X
|
||||
ip6tables -t mangle -F
|
||||
ip6tables -t mangle -X
|
||||
|
||||
## Block ALL IPV4 and IPV6 INPUT and OUTPUT
|
||||
iptables -P INPUT DROP
|
||||
iptables -P OUTPUT DROP
|
||||
iptables -P FORWARD DROP
|
||||
|
||||
ip6tables -P INPUT DROP
|
||||
ip6tables -P OUTPUT DROP
|
||||
ip6tables -P FORWARD DROP
|
||||
|
||||
##### CHAINS #####
|
||||
|
||||
## Creating chains
|
||||
iptables -N TCP
|
||||
iptables -N UDP
|
||||
iptables -N udp-flood
|
||||
|
||||
## UDP = ACCEPT / SEND TO THIS CHAIN
|
||||
iptables -A INPUT -p udp -m conntrack --ctstate NEW -j UDP
|
||||
## TCP = ACCEPT / SEND TO THIS CHAIN
|
||||
iptables -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP
|
||||
|
||||
##### GLOBAL RULES #####
|
||||
|
||||
## Allow localhost
|
||||
iptables -A INPUT -i lo -j ACCEPT
|
||||
iptables -A OUTPUT -o lo -j ACCEPT
|
||||
## Don't break the current/active connections
|
||||
iptables -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
iptables -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
## Allow response to ping request on interface eth1
|
||||
iptables -A INPUT -i $LanInt -p icmp --icmp-type 8 -m conntrack --ctstate NEW -j ACCEPT
|
||||
|
||||
##### OUTPUT IPV4 RULES FOR Router #####
|
||||
|
||||
## Allow ping out
|
||||
iptables -A OUTPUT -p icmp -j ACCEPT
|
||||
|
||||
## Routeur as CLIENT
|
||||
## Allow DNS
|
||||
iptables -A OUTPUT -o $WanInt -s $WanIP -p udp --dport $DNSPort -d $DNS1,$DNS2 -j ACCEPT
|
||||
## Block All Other UDP
|
||||
#iptables -A OUTPUT -p udp -j DROP
|
||||
## Allow HTTP/HTTPS
|
||||
iptables -A OUTPUT -o $WanInt -s $WanIP -p tcp --match multiport --dports $HTTPPort,$HTTPSPort -j ACCEPT
|
||||
|
||||
##### FORWARD IPV4 RULES #####
|
||||
|
||||
## Allow request forwarding from WAN to Router LAN interface
|
||||
iptables -A FORWARD -i $WanInt -d $WanIP -o $LanInt -p tcp -j ACCEPT
|
||||
iptables -A FORWARD -i $WanInt -d $WanIP -o $LanInt -p udp -j ACCEPT
|
||||
## Allow request forwarding from LAN
|
||||
iptables -A FORWARD -i $LanInt -s $LanNet -j ACCEPT
|
||||
## Forward HTTP/HTTPS to HAProxy
|
||||
iptables -A FORWARD -i $WanInt -p tcp --match multiport --dports $HTTPPort,$HTTPSPort -d $HAProxyIP -j ACCEPT
|
||||
|
||||
##### MASQUERADE MANDATORY #####
|
||||
|
||||
## Allow WAN network to use WanInt public adress to go out
|
||||
iptables -t nat -A POSTROUTING -s $LanNet -o $WanInt -j MASQUERADE
|
||||
|
||||
##### Redirect IPV4 (NAT) traffic from internet #####
|
||||
|
||||
## All tcp to Router WAN
|
||||
iptables -t nat -A PREROUTING -i $WanInt -p tcp --match multiport --dports $HTTPPort,$HTTPSPort -j DNAT --to $HAProxyIP
|
||||
## All udp to Router WAN
|
||||
iptables -t nat -A PREROUTING -i $WanInt -p udp -j DNAT --to $LanIP
|
||||
|
||||
##### OUTPUT FLOOD PROTECTION #####
|
||||
|
||||
iptables -A OUTPUT -p udp -j udp-flood
|
||||
iptables -A udp-flood -p udp -m limit --limit 10/s -j RETURN
|
||||
iptables -A udp-flood -j LOG --log-level 4 --log-prefix 'UDP-flood attempt: '
|
||||
iptables -A udp-flood -j DROP
|
||||
iptables -A OUTPUT -p udp -j DROP
|
27
router/del_iptables_rules.sh
Normal file
27
router/del_iptables_rules.sh
Normal file
@ -0,0 +1,27 @@
|
||||
#!/bin/sh
|
||||
|
||||
##### CLEAN ALL RULES & DROP IPV4 AND IPV6 PACKETS #####
|
||||
|
||||
## Delete all existing rules.
|
||||
/usr/sbin/iptables -F
|
||||
/usr/sbin/iptables -X
|
||||
/usr/sbin/iptables -t nat -F
|
||||
/usr/sbin/iptables -t nat -X
|
||||
/usr/sbin/iptables -t mangle -F
|
||||
/usr/sbin/iptables -t mangle -X
|
||||
|
||||
/usr/sbin/ip6tables -F
|
||||
/usr/sbin/ip6tables -X
|
||||
/usr/sbin/ip6tables -t nat -F
|
||||
/usr/sbin/ip6tables -t nat -X
|
||||
/usr/sbin/ip6tables -t mangle -F
|
||||
/usr/sbin/ip6tables -t mangle -X
|
||||
|
||||
## Accept ALL IPV4 and IPV6 INPUT and OUTPUT
|
||||
/usr/sbin/iptables -P INPUT ACCEPT
|
||||
/usr/sbin/iptables -P OUTPUT ACCEPT
|
||||
/usr/sbin/iptables -P FORWARD ACCEPT
|
||||
|
||||
/usr/sbin/ip6tables -P INPUT ACCEPT
|
||||
/usr/sbin/ip6tables -P OUTPUT ACCEPT
|
||||
/usr/sbin/ip6tables -P FORWARD ACCEPT
|
Reference in New Issue
Block a user