Jacob is the system administrator for his company, managing over 20 Linux-based servers.
Jacob wants to ensure that his servers are secure so he decides to add the following line to the
/etc/sysctl.conf file:

net.ipv4.conf.all.rp_filter = 1
What will this line accomplish?

A.
Prevent spoofing of incoming packets that appear to be from the computer’s defaultgateway

B.
Prevent spoofing of incoming packets that appear to be from local machine

C.
Allow incoming packets only from own subnet

D.
Allow outgoing packets only through primary network card

Explanation: