Which of the following commands does the administrator need to issue for the router to be fully functional?

A Linux administrator has configured a Linux system to be used as a router. The administrator confirms that two network adapters are properly installed and functioning correctly. In addition, the output of the iptables CL command appears to contain a complete firewall configuration.

Which of the following commands does the administrator need to issue for the router to be fully functional?
A . echo “1” > /proc/sys/net/ipv4/ip_forward
B . echo “0” > /proc/sys/net/ipv4/tcp_abort_on_overflow
C . echo “0” > /proc/sys/net/ipv4/max_connections
D . echo “1” > /proc/sys/net/ipv4/ip_default_ttl

Answer: A