I am using openvpn Linux Centos server and client. My server and client have a peer to peer connection directly without any intermediate devices. A tap interface is created between my server and client and UDP port 1194 is used. I am using AES-256-CBC.I don't understand how to exchange data between my server and client? How do I know whether it is encrypted or not? I am able to establish a connection between my server and client confirming by a message Initialization sequence completed in my server and client.But I don't understand how to send data through data channel between server and client, how to  encrypt this data and how to know whether it is encrypted or not? Could anyone please help me in understanding these concepts? I don't know whether this question makes sense or not. Please help me...
How to check openvpn data is getting exchanged , encrypted or not?
linux;openvpn;openssl