Refer to the Exhibit. 
Referring to the exhibit, you need to allow FTP traffic from the Internet to the FTP server in the
Trust zone. You have built a custom application so that you can modify the timeout value for FTP
sessions and have configured a policy to allow FTP traffic from Untrust to Trust, but the traffic still
does not flow. The current status of the FTP ALG is disabled.
What is the problem?
A.
The FTP ALG has not been enabled in the security policy.
B.
The FTP ALG has not been enabled in the security zones.
C.
The FTP ALG has been disabled on the device.
D.
The FTP ALG has not been set in the custom application definition.