A Linux Administrator Has Installed a Web Application Firewall in Front

Multiple Choice

A Linux administrator has installed a web application firewall in front of a web server running on HTTP port 8080 and successfully started the HTTP server. However, after opening the application URL in an Internet browser, the administrator discovered that the application does not work. The administrator performed the following diagnostic steps: Output of sysctl -a command: iptables -L netstat -nltop | grep "8080" : Which of the following is the NEXT step the administrator should perform to permanently fix the issue at the kernel level?

A) sysctl -w net.ipv4.ip_forward=1 then run sysctl -w /etc/sysctl.conf to enable the change sysctl -w net.ipv4.ip_forward=1 then run sysctl -w /etc/sysctl.conf to enable the change
B) Edit /etc/sysctl.conf file and add net.ipv4.ip_forward = 1 then run sysctl -p /etc/sysctl.conf to enable the change Edit /etc/sysctl.conf file and add net.ipv4.ip_forward = 1 sysctl -p /etc/sysctl.conf
C) Add iptables rule iptables -A INPUT -m state --state NEW -p tcp --dport 8080 -j then restart httpd daemon Add iptables rule iptables -A INPUT -m state --state NEW -p tcp --dport 8080 -j then restart httpd daemon
D) Add iptables rule iptables -A FORWARD-m state --state NEW -p tcp --dport 8080 -j ACCEPT then restart httpd daemon iptables -A FORWARD-m state --state NEW -p tcp --dport 8080 -j ACCEPT