I just created a firewall using iptables. If you have the time, please check if it secure enough or not. Basically there are 3 type of users -server -powerusesr -users
and 3 zone -internal zone -dmz zone -external / internet zone dmz one is actually a set of public ip, that should be accessible from all internal users. dmz zone is located in internet side. server and powerusers able to connect to the internet, while users only able connect to dmz. TIA.
firewall
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