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9 Commits
e570e813d8 ... secret_bra

Author SHA1 Message Date
vascoalvesxyz
a91dd239ef secret branch 2026-03-21 19:57:55 +00:00
jelly Tomas
19c3bec0c7 Should be the final before suricata, v2 2026-03-21 17:54:01 +00:00
jelly Tomas
b6da81c07c Should be the final before suricata 2026-03-21 17:44:14 +00:00
jelly Tomas
6cd82815e4 Forgor 2026-03-21 14:38:17 +00:00
jelly Tomas
5d2a2e414f Testing DNAT and SNAT 2026-03-21 12:51:42 +00:00
jelly Tomas
ecb833a122 Made the INTERNET 2026-03-20 12:55:12 +00:00
jelly Tomas
612eeec3b2 Ip rules updated and added default gw 2026-03-20 10:05:19 +00:00
jelly Tomas
2bdecf3cb1 Rules changed, now testing 2026-03-20 09:04:00 +00:00
jelly Tomas
3681888b5a Added one line 2026-03-18 15:55:27 +00:00
5 changed files with 85 additions and 85 deletions
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13
DMZ.sh
View File

@@ -7,10 +7,10 @@ routerIp=23.214.219.254
mask25=255.255.255.128
dns=23.214.219.130
mail=23.214.219.132
vpn_gw=23.214.219.133
www=23.214.219.134
smtp=23.214.219.135
mail=23.214.219.131
vpn_gw=23.214.219.132
www=23.214.219.133
smtp=23.214.219.134
dnsPort=53
mailPort=888
@@ -21,16 +21,17 @@ sudo yum install iptables-services -y
sudo systemctl stop firewalld
sudo systemctl disable firewalld
sudo systemctl mask firewalld
sudo systemctl enable iptables
sudo iptables -F
sudo ifconfig enp0s8 $ip netmask $mask25
sudo ip route add 192.168.10.0/24 via $routerIp
sudo add default gw $routerIp
# alias dos ips
sudo ip addr add $dns dev enp0s8
sudo ip addr add $mail dev enp0s8
sudo ip addr add $vpn_gw dev enp0s8
sudo ip addr add $ww dev enp0s8
sudo ip addr add $www dev enp0s8
sudo ip addr add $smtp dev enp0s8
# netcart

3
INTERNAL.sh
View File

@@ -14,10 +14,11 @@ sudo yum install iptables-services -y
sudo systemctl stop firewalld
sudo systemctl disable firewalld
sudo systemctl mask firewalld
sudo systemctl enable iptables
sudo iptables -F
sudo ifconfig enp0s8 $ip netmask $mask24
sudo ip route add 23.214.219.128/25 via $routerIp
sudo route add default gw $routerIp
# aliasing
sudo ip addr add $ftp dev enp0s8
sudo ip addr add $datastore dev enp0s8

15
INTERNET.sh Normal file
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@@ -0,0 +1,15 @@
ip=87.248.214.98
dns2=87.248.214.99
eden=87.248.214.100
mask24=255.255.255.0
routerIp=87.248.214.97
sudo yum install iptables-services -y
sudo systemctl stop firewalld
sudo systemctl disable firewalld
sudo systemctl mask firewalld
sudo systemctl enable iptables
sudo iptables -F
sudo ifconfig enp0s8 $dn2 netmask $mask24
sudo route add default gw $routerIp
sudo ip addr add $dns2 dev enp0s8
sudo ip addr add $eden dev enp0s8

0
README.md
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139
ROUTER.sh
View File

@@ -1,86 +1,69 @@
# NETWORKS:
# DMZ: 23.214.219.128/25
# Internal: 192.168.10.0/24
#
# MACHINES:
# DNS2: 192.137.16.75
# EDEN 193.138.212.1
dns2="192.137.16.75"
eden="193.138.212.1"
IF_DMZ="enp0s8"
IF_INT="enp0s9"
IF_EXT="enp0s10"
NET_DMZ="23.214.219.128/25"
NET_INT="192.168.10.0/24"
IP_EXT_FW="87.248.214.97"
IP_DMZ_FW="23.214.219.254"
IP_INT_FW="192.168.10.254"
IP_DMZ_DNS="23.214.219.130"
IP_DMZ_SMTP="23.214.219.131"
IP_DMZ_WWW="23.214.219.132"
IP_DMZ_VPN_GW="23.214.219.133"
IP_DMZ_MAIL="23.214.219.134"
IP_INT_FTP="192.168.10.2"
IP_INT_DATASTORE="192.168.10.3"
IP_DNS2="193.137.16.75"
IP_EDEN="193.136.212.1"
# ==============================
# Router 1
# INTERFACES:
# - Internet: 87.248.214.97
# - DMZ: 23.214.219.254
# - Internal: 192.168.10.254
# ==============================
sudo yum install epel-release -y
sudo yum install suricata -y
sudo suricata-update
# ==============================
# DMZ /25
# IP:
# - dns : 23.214.219.130
# - smtp : 23.214.219.131
# - www : 23.214.219.132
# - vpn-gw: 23.214.219.133
# ==============================
sudo ifconfig $IF_DMZ $IP_DMZ_FW netmask 255.255.255.128
sudo ifconfig $IF_INT $IP_INT_FW netmask 255.255.255.0
sudo ifconfig $IF_EXT $IP_EXT_FW netmask 255.255.255.0
# ==============================
# Internal
# IP:
# ftp: 192.168.10.1
# datastore : 192.168.10.2
# DHCP Client : 192.168.10.3-5
# ==============================
sudo ifconfig enp0s8 23.214.219.254 netmask 255.255.255.128
sudo ifconfig enp0s9 192.168.10.254 netmask 255.255.255.0
sudo ifconfig enp0s3 87.248.214.97 netmask 255.255.255.0
sudo yum install iptables-services -y
sudo systemctl stop firewalld
sudo systemctl disable firewalld
sudo systemctl mask firewalld
sudo systemctl enable iptables
sudo iptables -F
sudo iptables -t nat -F
sudo iptables -t mangle -F
sudo sysctl -w net.ipv4.ip_forward=1
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT ACCEPT
sudo iptables -P INPUT DROP
sudo iptables -P FORWARD DROP
sudo iptables -P OUTPUT ACCEPT
sudo modprobe nf_conntrack_ftp
sudo modprobe nf_nat_ftp
sudo iptables -A FORWARD -j NFQUEUE --queue-num 0
sudo iptables -A INPUT -i lo -j ACCEPT
sudo iptables -A OUTPUT -o lo -j ACCEPT
sudo iptables -t nat -A POSTROUTING -o enp0s3 -j MASQUERADE
#DNS name resolution requests sent to outside servers and want a response:TODO:INPUT
sudo iptables -A FORWARD -i enp0s3 -p udp --sport 53 -m state --state ESTABLISHED,RELATED -j ACCEPT
#SSH connections to the router system that originate from the inside and want an answer:TODO:INPUT
sudo iptables -A FORWARD -i enp0s3 -o enp0s9 -p tcp --dport 22 -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -A FORWARD -i enp0s3 -d 23.214.219.133 -p tcp --dport 22 -m state --state ESTABLISHED,RELATED -j ACCEPT
#The dns server should be able to resolve names using the internet (and others???)
sudo iptables -A FORWARD -i enp0s8 -o enp0s3 -s 23.214.219.130 -p udp --dport 53 -j ACCEPT
#The internal network should be able to send and recieve dns name resolutions to the dns server (1!)
sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.130 -p udp --dport 53 -j ACCEPT
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p udp --dport 53 -m state --state ESTABLISHED,RELATED -j ACCEPT
#The dns and dns2 servers should be able to synchronize the contents of DNS zones. (protocol tcp port 53)
sudo iptables -A FORWARD -i enp0s8 -o enp0s3 -d 193.137.16.75 -p tcp --dport 53 -j ACCEPT
sudo iptables -A FORWARD -i enp0s3 -o enp0s8 -d 23.214.219.130 -p tcp --dport 53 -j ACCEPT
#SMTP connections to the smtp server and returns
sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.131 -p tcp --dport 587 -j ACCEPT
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p tcp --dport 587 -m state --state ESTABLISHED,RELATED -j ACCEPT
#POP and IMAP connections to the www server
sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.132 -p tcp --dport 80 -j ACCEPT
sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.132 -p tcp --dport 443 -j ACCEPT
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p tcp --dport 80 -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p tcp --dport 443 -m state --state ESTABLISHED,RELATED -j ACCEPT
#OpenVPN connections to the vpn-gw server
sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.133 -p udp --dport 1194 -j ACCEPT
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p udp --dport 1194 -j ACCEPT
#VPN clients connected to the gateway vpn-gw ???? vpn should be able to acess ftp e datastore
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -d 192.168.10.1 -p tcp --dport ftp -j ACCEPT
sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -d 192.168.10.2 -j ACCEPT
sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.133 -j ACCEPT
# Apartir daqui foi só para testar se as conecções funcionavam
sudo iptables -A FORWARD -i enp0s8 -s 23.214.219.130 -p tcp --sport 22
# Unsure these will work
sudo iptables -A FORWARD -i enp0s9 -d 23.214.219.131
sudo iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -A INPUT -p udp --dport 53 -j ACCEPT
sudo iptables -A INPUT -i $IF_INT -p tcp --dport 22 -j ACCEPT
sudo iptables -A INPUT -i $IF_DMZ -s $IP_DMZ_VPN_GW -p tcp --dport 22 -j ACCEPT
sudo iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
sudo iptables -A FORWARD -p udp -d $IP_DMZ_DNS --dport 53 -j ACCEPT
sudo iptables -A FORWARD -s $IP_DMZ_DNS -d $IP_DNS2 -p tcp --dport 53 -j ACCEPT
sudo iptables -A FORWARD -s $IP_DNS2 -d $IP_DMZ_DNS -p tcp --dport 53 -j ACCEPT
sudo iptables -A FORWARD -p tcp -d $IP_DMZ_SMTP --dport 25 -j ACCEPT
sudo iptables -A FORWARD -p tcp -d $IP_DMZ_MAIL --dport 110 -j ACCEPT
sudo iptables -A FORWARD -p tcp -d $IP_DMZ_MAIL --dport 143 -j ACCEPT
sudo iptables -A FORWARD -p tcp -d $IP_DMZ_WWW -m multiport --dports 80,443 -j ACCEPT
sudo iptables -A FORWARD -p udp -d $IP_DMZ_VPN_GW --dport 1194 -j ACCEPT
sudo iptables -A FORWARD -i $IF_DMZ -s $IP_DMZ_VPN_GW -d $NET_INT -j ACCEPT
sudo iptables -t nat -A POSTROUTING -s $NET_INT -o $IF_EXT -j SNAT --to-source $IP_EXT_FW
sudo iptables -A FORWARD -i $IF_INT -o $IF_EXT -p udp --dport 53 -j ACCEPT
sudo iptables -A FORWARD -i $IF_INT -o $IF_EXT -p tcp -m multiport --dports 80,443,22,21 -j ACCEPT
sudo iptables -t nat -A PREROUTING -i $IF_EXT -d $IP_EXT_FW -p tcp --dport 21 -j DNAT --to-destination $IP_INT_FTP
sudo iptables -A FORWARD -i $IF_EXT -d $IP_INT_FTP -p tcp --dport 21 -j ACCEPT
sudo iptables -t nat -A PREROUTING -i $IF_EXT -s $IP_EDEN -d $IP_EXT_FW -p tcp --dport 22 -j DNAT --to-destination $IP_INT_DATASTORE
sudo iptables -t nat -A PREROUTING -i $IF_EXT -s $IP_DNS2 -d $IP_EXT_FW -p tcp --dport 22 -j DNAT --to-destination $IP_INT_DATASTORE
sudo iptables -A FORWARD -i $IF_EXT -d $IP_INT_DATASTORE -p tcp --dport 22 -j ACCEPT