The virtual machine inspects each packet at the following points:
Before the virtual machine, in the inbound direction (i or PREIN)
After the virtual machine, in the inbound direction (I or POSTIN)
Before the virtual machine, in the outbound direction (o or PREOUT)
After the virtual machine, in the outbound direction (O or POSTOUT)
If Ethereal displays a packet with i, I, o, and O entries, what does that likely indicate?

A.
The packet was rejected by the Rule Base.

B.
The packet was destined for the Gateway.

C.
Nothing unusual; the o and O entries only appear if there is a kernel-level error.

D.
The packet was rerouted by the Gateway’s OS.

E.
The packet arrived at the kernel and left the Security Gateway successfully.