Server1 runs Windows Server 2012 R2 and is installed as an FTP server. Client uses App1 to connect to
Server1 for FTP. App1 uses TCP port 21 for control and a dynamic port for data. You have allowed port 21 in
firewall. What should you do next in order to allow clients to use App1 to connect to server1 using ftp.

A.
At Server1 allow firewall rule of outbound

B.
At Server1 allow firewall rule of inbound

C.
Netsh adv firewall domain profile state off

D.
Netsh adv firewall set global StatefulFtp enable

Explanation:
Set global stateful ftp
Configures how Windows Firewall with Advanced Security handles FTP traffic that uses an initial connection on
one port to request a data connection on a different port. This affects both active and passive FTP.