CentOS 7 - iptables

systemctl stop firewalld
systemctl disable firewalld
systemctl mask firewalld

yum -y install iptables-services
systemctl enable iptables
systemctl start iptables

iptables -P OUTPUT ACCEPT
iptables -P INPUT ACCEPT
iptables -P FORWARD DROP
iptables -F
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -m state --state ESTABLISHED -j ACCEPT
iptables -A INPUT -p tcp -s 92.251.85.246 --dport 22 -j ACCEPT
iptables -A INPUT -p udp -s 92.251.85.246 --dport 161 -j ACCEPT
iptables -A INPUT -p tcp -s 92.251.85.246 --dport 8000 -j ACCEPT
iptables -A INPUT -p tcp -s 92.251.85.246 --dport 8081 -j ACCEPT
iptables -A INPUT -p tcp -s 92.251.85.246 --dport 8082 -j ACCEPT
iptables -A INPUT -p tcp -s 92.251.85.246 --dport 8083 -j ACCEPT
iptables -A INPUT -p udp -s 51.75.207.142 --dport 8081 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j ACCEPT
iptables -P INPUT DROP
iptables -L -v -n
service iptables save

ip6tables -P OUTPUT ACCEPT
ip6tables -P INPUT DROP
ip6tables -P FORWARD DROP
ip6tables -F
ip6tables -L -v -n
service ip6tables save

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