drop flooding

/ip firewall filter add chain=syn-flood action=return tcp-flags=syn,!fin,!rst,!ack protocol=tcp limit=5,10

/ip firewall filter add chain=syn-flood action=return protocol=!tcp disabled=yes

/ip firewall filter add chain=syn-flood action=return tcp-flags=!,syn,!fin,!rst,!ack protocol=tcp disabled=yes

/ip firewall filter add chain=syn-flood action=log log-prefix=”SYN FLOOD:”

/ip firewall filter add chain=syn-flood action=drop disabled=yes

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