Rate-limit connections iptables

Allow max 3 new SSH connections per minute

iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m limit --limit 3/min --limit-burst 5 -j ACCEPT

#iptables #linux #network #security

more iptables all 10 commands →

nftables: list all rules nft list ruleset nftables: add accept rule nft add rule inet filter input tcp dport 8080 accept nftables: flush all rules nft flush ruleset List rules with line numbers iptables -L INPUT --line-numbers -n -v Allow incoming port iptables -A INPUT -p tcp --dport 443 -j ACCEPT