EWS users should use SSH and/or SFTP clients to connect to linux.ews.illinois.edu. For connections from Windows machines, Engineering IT recommends using mobaxterm as your SSH/SFTP client.
On May 30th, 2017, the campus Office for Privacy and Information Security (OPIS) implemented a campus firewall change to block off-campus SSH connections to on-campus resources. A VPN connection is now required. Machines that require an exception to this for teaching or research purposes can request one here.