A server is being used as a smurf amplifier, whereby it is responding to ICMP Echo-Request
packets sent to its broadcast address. To disable this, which command needs to be run?
A.
echo “0” > /proc/sys/net/ipv4/icmp_echo_accept_broadcasts
B.
echo “1” > /proc/sys/net/ipv4/icmp_echo_nosmurf
C.
iptables -A INPUT -p icmp -j REJECT
D.
ifconfig eth0 nobroadcast
E.
echo “1” > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
Explanation: