GIAC Penetration Tester (GPEN) — Question 26

You are running a vulnerability scan on a remote network and the traffic Is not making It to the target system. You investigate the connection issue and determine that the traffic is making it to the internal interface of your network firewall, but not making. It to the external Interface or to any systems outside your firewall. What is the most likely problem?

Answer options

• A. Your network firewall is blocking the traffic
• B. The NAT or pat tables on your network based firewall are filling up and droppingthe traffic
• C. A host based firewall is blocking the traffic
• D. Your ISP Is blocking the traffic

Correct answer: C

Explanation

The correct answer is C, as a host-based firewall could be configured on the target system, blocking incoming traffic. Options A and B cannot be the cause since the traffic is reaching the internal interface, indicating the firewall is allowing some traffic. Option D is unlikely as the problem is isolated to the traffic not reaching the external interface.