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:

Output of iptables -L command:

Output of 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?

Question

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:

kernel.sched_child_runs first
kernel.panic = 0

kernel. ftrace_enabled = 1
kernel.syerq = 1

net .ipv4.icmp_echo_ignore_all

"

Output of iptables -L command:

ChainINPUT (policyACCEPT)

target prot opt source
ACCEPT tcp -- anywhere

Chain FORWARD (policy ACCEPT)

target prot opt source
ACCEPT tcp -- anywhere

Chain OUTPUT (policy ACCEPT)

target prot opt source

destination
anywhere

destination
anywhere

destination

tep dpt:webcache

dpt:webcache

Output of netstat '"nltop | grep "8080":

tep 0.0.0.0:8080 0.0.0.0 Listen 12801/httpd

Which of the following is the NEXT step the administrator should perform to permanently fix the issue at the kernel level?

Exam-Answer · Accepted Answer

Add iptables rule iptables -A FORWARD-m state --state NEW -p tcp --dport 8080 "j ACCEPT then restart httpd daemon.

Question 98 of 135 from exam XK0-004: CompTIA Linux+

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