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# sshd rate-limiting $IPT -A tcp_inbound -p TCP -s 0/0 --destination-port 22 -m state \ --state NEW -m recent --update --seconds 600 --hitcount 5 -j LOG \ --log-prefix "sshd rate-limit: " $IP6T -A tcp_inbound -p TCP -s ::/0 --destination-port 22 -m state \ --state NEW -m recent --update --seconds 600 --hitcount 5 -j LOG \ --log-prefix "sshd rate-limit: " $IPT -A tcp_inbound -p TCP -s 0/0 --destination-port 22 -m state \ --state NEW -m recent --update --seconds 600 --hitcount 5 -j DROP $IP6T -A tcp_inbound -p TCP -s ::/0 --destination-port 22 -m state \ --state NEW -m recent --update --seconds 600 --hitcount 5 -j DROP $IPT -A tcp_inbound -p TCP -s 0/0 --destination-port 22 -m state \ --state NEW -m recent --set $IP6T -A tcp_inbound -p TCP -s ::/0 --destination-port 22 -m state \ --state NEW -m recent --set # sshd $IPT -A tcp_inbound -p TCP -s 0/0 --destination-port 22 -j ACCEPT $IP6T -A tcp_inbound -p TCP -s ::/0 --destination-port 22 -j ACCEPT
Mark as private (unlisted)
for 30 minutes
for 6 hours
for 1 day
for 1 week
for 1 month
for 1 year
everlasting (like CCCP)