Your network contains an Active Directory domain named contoso.com. The domain contains two servers named Server1 and Server2. Server1 runs Windows Server 2012 R2.
Server2 runs Windows Server 2008 R2 Service Pack 1 (SP1) and has the DHCP Server server role installed.
You need to manage DHCP on Server2 by using the DHCP console on Server1.
What should you do first?（）

Your network contains an Active Directory domain named contoso.com. The domain contains an Application server named Server1. Server1 runs Windows Server 2012 R2.
Server1 is configured as an FTP server.
Client computers use an FTP Application named App1.exe. App1.exe uses TCP port 21 as the control port and dynamically requests a data port.
On Server1, you create a firewall rule to allow connections on TCP port 21.
You need to configure Server1 to support the client connections from App1.exe.
What should you do?（）