While conducting a penetration test, the tester determines that there is a firewall between the
tester’s machine and the target machine. The firewall is only monitoring TCP handshaking of
packets at the session layer of the OSI model. Which type of firewall is the tester trying to
traverse?

A.
Packet filtering firewall

B.
Application-level firewall

C.
Circuit-level gateway firewall

D.
Stateful multilayer inspection firewall