99 lines
5.0 KiB
Bash
99 lines
5.0 KiB
Bash
# NETWORKS:
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# DMZ: 23.214.219.128/25
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# Internal: 192.168.10.0/24
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#
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# MACHINES:
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# DNS2: 192.137.16.75
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# EDEN 193.138.212.1
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dns2="87.248.214.99"
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eden="87.248.214.100"
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# ==============================
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# Router 1
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# INTERFACES:
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# - Internet: 87.248.214.97
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# - DMZ: 23.214.219.254
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# - Internal: 192.168.10.254
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# ==============================
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# ==============================
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# DMZ /25
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# IP:
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# - dns : 23.214.219.130
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# - smtp : 23.214.219.131
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# - www : 23.214.219.132
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# - vpn-gw: 23.214.219.133
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# - mail: 23.214.219.134
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# ==============================
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# ==============================
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# Internal
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# IP:
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# ftp: 192.168.10.2
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# datastore : 192.168.10.3
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# DHCP Client : 192.168.10.4-5
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# ==============================
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sudo ifconfig enp0s8 23.214.219.254 netmask 255.255.255.128
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sudo ifconfig enp0s9 192.168.10.254 netmask 255.255.255.0
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sudo ifconfig enp0s10 87.248.214.97 netmask 255.255.255.0
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sudo yum install iptables-services -y
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sudo systemctl stop firewalld
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sudo systemctl disable firewalld
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sudo systemctl mask firewalld
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sudo systemctl enable iptables
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sudo iptables -F
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sudo iptables -t nat -F
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sudo iptables -t mangle -F
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sudo sysctl -w net.ipv4.ip_forward=1
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iptables -P INPUT DROP
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iptables -P FORWARD DROP
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iptables -P OUTPUT ACCEPT
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sudo iptables -A INPUT -i lo -j ACCEPT
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sudo iptables -A OUTPUT -o lo -j ACCEPT
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#sudo iptables -t nat -A POSTROUTING -i enp0s9 -o enp0s3 -j MASQUERADE #SUS
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sudo iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT #CAREFULL
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#DNS name resolution requests sent to outside servers and want a response:
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sudo iptables -A INPUT -o enp0s10 -p udp --dport 53 -j ACCEPT
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#SSH connections to the router system that originate from the inside and want an answer:
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sudo iptables -A INPUT -i enp0s9 -p tcp --dport 22 -j ACCEPT
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sudo iptables -A INPUT -i enp0s8 -s 23.214.219.133 -p tcp --dport 22 -j ACCEPT
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#The dns server should be able to resolve names using the internet (and others???)
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sudo iptables -A FORWARD -i enp0s8 -o enp0s10 -s 23.214.219.130 -p udp --dport 53 -j ACCEPT
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#The internal network should be able to send and recieve dns name resolutions to the dns server (1!)
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.130 -p udp --dport 53 -j ACCEPT
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sudo iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT #THIS IS IMPORTANT AND MIGHT FUCK US
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#The dns and dns2 servers should be able to synchronize the contents of DNS zones. (protocol tcp port 53)
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sudo iptables -A FORWARD -i enp0s8 -o enp0s10 -s 23.214.219.130 -p tcp --dport 53 -j ACCEPT
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#SMTP connections to the smtp server and returns
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.131 -p tcp --dport 587 -j ACCEPT
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#sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p tcp --dport 587 -m state --state ESTABLISHED,RELATED -j ACCEPT
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#POP and IMAP connections to the www server
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.134 -p tcp --dport 143 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.134 -p tcp --dport 110 -j ACCEPT
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#HTTP and HTTPS connectins
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.132 -p tcp --dport 80 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.132 -p tcp --dport 443 -j ACCEPT
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#OpenVPN connections to the vpn-gw server
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sudo iptables -A FORWARD -i enp0s9 -o enp0s8 -d 23.214.219.133 -p udp --dport 1194 -j ACCEPT
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#sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -p udp --dport 1194 -j ACCEPT
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#VPN clients connected to the gateway vpn-gw ???? vpn should be able to acess ftp e datastore
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sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -s 23.214.219.133 -d 192.168.10.2 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s8 -o enp0s9 -s 23.214.219.133 -d 192.168.10.3 -j ACCEPT
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#FTP da internet WORRIED ???
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sudo iptables -A FORWARD -i enp0s10 -o enp0s9 -d 192.168.10.2 -p tcp --dport 21 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s9 -o enp0s10 -p tcp --sport 20 -j ACCEPT #MIGHT BE NEEDED
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#SSH CONNECTIONS datastore server but only from eden or dn2 DNAT -s servers, and port and -d interface
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sudo iptables -t nat -A PREROUTING -s $dns2 -p tcp --dport 22 -j DNAT --to-destination 192.168.10.3
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sudo iptables -t nat -A PREROUTING -s $eden -p tcp --dport 22 -j DNAT --to-destination 192.168.10.3
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sudo iptables -t nat -A PREROUTING -i enp0s10 -p tcp --dport 21 -j DNAT --to-destination 192.168.10.2
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sudo iptables -A FORWARD -i enp0s10 -o enp0s9 -d 192.168.10.3 -s $dns2 -p tcp --dport 22 -j ACCEPT #Need to check and make diferent ip addresses
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sudo iptables -A FORWARD -i enp0s10 -o enp0s9 -d 192.168.10.3 -s $eden -p tcp --dport 22 -j ACCEPT
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#enp0s9 to internet DNS, http, https, ssh, FTP(SERVERS??????(WHO INVITED THIS GUY)) SNAT
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sudo iptables -t nat -A POSTROUTING -s 192.168.10.0/24 -o enp0s10 -j SNAT --to-source 87.248.214.97
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sudo iptables -A FORWARD -i enp0s9 -o enp0s10 -p udp --dport 53 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s9 -o enp0s10 -p tcp --dport 80 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s9 -o enp0s10 -p tcp --dport 443 -j ACCEPT
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sudo iptables -A FORWARD -i enp0s9 -o enp0s10 -p tcp --sport 21 -j ACCEPT #MIGHT NOT BE ENOUGH
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sudo iptables -A FORWARD -i enp0s9 -o enp0s10 -p tcp --dport 21 -j ACCEPT |