Created
May 26, 2017 08:01
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CentOS iptables setup for common webserver
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#!/usr/bin/env bash | |
## IPTABLES SETUP | |
iptables -F; | |
iptables -A INPUT -p tcp --tcp-flags ALL NONE -j DROP; | |
iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP; | |
iptables -A INPUT -p tcp --tcp-flags ALL ALL -j DROP; | |
iptables -A INPUT -i lo -j ACCEPT; | |
iptables -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT; | |
iptables -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT; | |
iptables -t filter -A OUTPUT -p tcp --dport 3306 -j ACCEPT; | |
iptables -t filter -A INPUT -p tcp --sport 3306 -m state --state ESTABLISHED -j ACCEPT; | |
iptables -A INPUT -p tcp -m tcp --dport 22 -j ACCEPT; | |
iptables -P OUTPUT ACCEPT; | |
iptables -P INPUT DROP; | |
iptables -L -n; | |
iptables-save | sudo tee /etc/sysconfig/iptables; | |
service iptables restart; |
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