Hi Meenu,
If you want to connect to CA Devtest server (LISA) through Putty, you can give hostname of the server in putty UI and connect to the server. Sample screenshot of the connectivity from putty is given in below post.
PuTTY connection establishment via proxy server in LISA
If you are looking for a way to transfer file from Devtest to the remote server, you can use FTP step and transfer file to remote server.
Thanks & Regards
Srikanth Gajawada