sh

INTERNAL.sh

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+# 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"
+
+# ============================== 
+# Router 1
+# INTERFACES:
+# - Internet: 87.248.214.97
+# - DMZ: 23.214.219.254
+# - Internal: 192.168.10.254
+# ============================== 
+
+# ==============================
+# DMZ 
+# IP:
+# - dns : 23.214.219.129
+# - dns2 : 23.214.219.130
+# - smtp : 23.214.219.131
+# - www : 23.214.219.132
+# -
+sudo ifconfig enp0s8 23.214.219.254 netmask 255.255.255.128
+sudo ifconfig enp0s9 192.168.10.254 netmask 255.255.255.128
+sudo ifconfig enp0s3 87.248.214.97 netmask 255.255.255.0
+
+
+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 -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: //O ip ainda tem de mudar
+sudo iptables -A FORWARD -i enp0s8 -o enp0s3 -s 23.214.219.129 -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:É preciso outra regra uma para a port enp0s9 e o ip do vpn
+sudo iptables -A FORWARD -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 23.214.219.129 -p udp --dport 53 -j ACCEPT
+sudo iptables -A FORWARD -i enp0s8 -o enp0s3 -s 23.214.219.130 -p udp --dport 53 -j ACCEPT
+# Apartir daqui foi só para testar se as conecções funcionavam
+sudo iptables -A FORWARD -i enp0s8 -s 23.214.219.129 -p tcp --sport 22 
+# Unsure these will work
+sudo iptables -A FORWARD -i enp0s9 -s 23.214.219.131
+
+
+#There might be a need to foward and input to, because of the nat?
+#Dont use static ip address for internet related rules 
+sudo ifconfig enp0s8 23.214.219.129 netmask 255.255.255.128
+sudo ip route add default via 23.214.219.254