Problem
I need to setup iptables on my spinup server
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Iptables is a utility that comes standard in secure linux servers. It provides a host-level firewall that is separate from any external firewalls (security group in amazon, or yale's firewall in our datacenters).
Note that if you are using a server in a high-risk space (from CIS image) iptables is used on both CentOS and Ubuntu servers, i.e. Ubuntu does not use ufw and it will show inactive.
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- Keep iptables enabled on any server that needs to be secure
- Only allow particular IPs and ports. Do not just allow everything (0.0.0.0/0)
- Save your Iptables rules after modification . "sudo service iptables save"
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