How to enable tunneling in lab

the ssh command i am using is as follow
[rrajrathod@gw03 ~]$ ssh -D 8157 -N ec2-user@ec2-52-6-107-73.compute-1.amazoneaws.com
ssh: connect to host ec2-52-6-107-73.compute-1.amazoneaws.com port 22: Connection refused

i have added the google chrome FroxyProxy.

thanks in advance for your prompt reply.