Due to a high security vulnerability ITS Research Services has temporarily blocked access to Argon from off campus. The ability to SSH over port 40 will not be available from outside the campus network. This will also impact the ability to access data.hpc.uiowa.edu from off campus. Users can continue to access Argon or data.hpc from off campus by first connecting to the VPN. 

ITS Research Services is working on a patching solution to resolve the vulnerability.