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| − | Reference - https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-using-iptables-on-ubuntu-14-04<br>
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| − | All commands assume root level access<br>
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| − | iptables -L [ -n ]<br>
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| − | iptables -S ( reflects the commands necessary ) <br>
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| − | iptables -F ( flush the current rules ) <br><br>
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| − | '''Connecting to a vm from external''' ( This is good, it works )<br>
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| − | <source lang="text">
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| − | iptables -t nat -I PREROUTING -p tcp -d 1.2.3.4 --dport 80 -j DNAT --to-destination 10.0.0.1:80
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| − | iptables -t nat -I PREROUTING -p tcp -d 1.2.3.4 --dport 22 -j DNAT --to-destination 10.0.0.2:22
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| − | iptables -I FORWARD -m state -d 10.0.0.0/24 --state NEW,RELATED,ESTABLISHED -j ACCEPT
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| − | </source>
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