You are working for ABC Corporation. The organization plans to set up a new Linux Server. The
server has to meet the following requirements:
1. Deactivate IP forwarding.
2. Make the kernel ignore all the Internet Control Message Protocol (ICMP) type 0 messages.
3. Disable response to ICMP broadcasts.
4. Stop attackers from using the source routing to generate traffic that pretends to originate from
inside the network.
The changes have to made persistent across reboots. To meet these requirements, you edit the
/etc/sysctl.conf file and add the following entries:
net.ipv4.ip_forward = 0
net.ipv4.icmp_echo_ignore_all = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.conf.all.accept_source_route = 1
Which statement regarding the requirements is true in this context?
A.
Only requirement 4 is met.
B.
All four requirements are met.
C.
Only requirements 2 and 4 are met.
D.
Only requirements 1 and 3 are met.
E.
Only requirements 1,2 and 3 are met.