All the web servers in the DMZ respond to ACK scan on port 80.
Why is this happening?
A . They are all Windows based webserver
B . They are all Unix based webserver
C . The company is not using IDS
D . The company is not using a stateful firewall
Answer: D
Explanation:
If they used a stateful inspection firewall this firewall would know if there has been a SYN-ACK before the ACK.