If you can see this check that


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In order to drop ICMP packets which are arriving on eth0 faster than 1 per second, you could make use of which of the following iptable commands? Here the default policy for the imput chain is ACCEPT.
A.

iptables -t filter -A INPUT -o eth0 -p icmp --icmp-type echo-request --limit 1/second -j ACCEPT

iptables -A INPUT -i eth0 -p icmp --icmp-type echo-request -j DELETE
B.

iptables -A INPUT -i eth0 -p icmp --icmp-type echo-request -m limit --limit 1/second -j DROP
C.

iptables -t filter -A INPUT -i eth0 -p icmp --icmp-type echo-request -m limit --limit 1/second -j ACCEPT

iptables -A INPUT -i eth0 -p icmp --icmp-type echo-request -j DROP
D.

iptables -t filter -A INPUT -i eth0 -p icmp --icmp-type echo-request -m limit --limit 1/second -j DROP

iptables -t filter -A INPUT -i eth0 -p icmp --icmp-type echo-request -j ACCEPT
E.

iptables -t filter -A INPUT -i eth0 -p icmp --icmp-type echo-request -m limit --limit 1/second -j DROP
Incorrect Answer There is no such target as DELETE.
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Incorrect Answer This would DROP packets which arrives at rates of LESS than 1 per second, and would ignore packets which arrived faster. This is the opposite of that asked by the question.
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Correct Answer Looks good.
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Incorrect Answer This would DROP packets which arrives at rates of LESS than 1 per second, and would ignore packets which arrived faster. This is the opposite of that asked by the question.
Close
Incorrect Answer This would DROP packets which arrives at rates of LESS than 1 per second, and would ignore packets which arrived faster. This is the opposite of that asked by the question.
Close