After a switch on April 10th to a new firewall for the Med School, we noticed that idle ssh sessions were being killed after very short times. This morning, the SMPH Network Group made a change to reduce that timeout, but now we are seeing incomplete ssh negotiation for new ssh sessions, from off campus and from VPNs. Within the Biostat network, ssh is fine.
The SMPH Network Group is aware of this and debugging the issue now. We'll update this status page when we know more.
May 2 2017: Resolved. Click here for additional information on how to work around this issue.