Thank you snakecharmerb for trying to help me out on this.
I was able to find a solution for this myself. The actual problem was I was using Dev Center 1.4 to connect to Cassandra 3. Once I upgraded to the Dev Center 1.5, it worked like a charm with SSH Local port forwarding enabled.
These are the following settings
Listen Address : internal ip address (not the localhost),
rpc_address: internal ip address (same as above)
Steps After setting the above steps
On my terminal enabled local port forwarding
ssh -L 9042::9042 @
Start Dev Center 1.5
It worked like a charm