Règles de pare-feu

iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p tcp --dport 2021  -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 80  -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 443  -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 10050  -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 10051  -m state --state NEW -j ACCEPT
iptables -A INPUT -p tcp --dport 62354  -m state --state NEW -j ACCEPT
iptables -A INPUT -p udp -m udp --dport 53 -j ACCEPT
iptables -A INPUT -p tcp -m tcp --dport 53 -j ACCEPT
iptables -A INPUT -p ICMP --icmp-type 8 -j ACCEPT
iptables -A INPUT -j DROP

apt install iptables-persistent