You are working as the system administrator for a company that specializes in handling network
and systems security. The company has a new client who wants to set up a secure network
having the IP range 10.100.0.0/24.
The client has the following requirements:
1. Change the chain policies for all chains in the filter table to DROP.
2. Add rules to allow connection-tracked traffic (that is, stateful rules) to be accepted.
What are the minimum steps required to meet the client’s requirement? (Choose all that apply.)
A.
iptables -P INPUT DROP
B.
iptables -P FORWARD DROP
C.
iptables -P OUTPUT DROP
D.
iptables -A INPUT -i lo -j ACCEPT
E.
iptables -A OUTPUT -o lo -j ACCEPT
F.
iptables -A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
G.
iptables -A OUTPUT -m state –state ESTABLISHED,RELATED -j ACCEPT