Code: Select all
iptables -F
iptables -t filter -A INPUT -j DROP
iptables -t filter -I INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
Code: Select all
iptables -F
iptables -t filter -A INPUT -j DROP
iptables -t filter -I INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
Code: Select all
iptables -F
iptables -t filter -A INPUT -j DROP
iptables -t filter -I INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
Code: Select all
iptables -A INPUT -m tcp -p tcp --dport 22 -m state
--state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -m tcp -p tcp --dport 22 -m state
--state NEW -m limit --limit 3/hour --limit-burst 3 -j ACCEPT
iptables -A INPUT -m tcp -p tcp --dport 22 -j DROP