Remote access to EECIS systems is available via SSH. For links to client software, see UseSSH. All EECIS systems have SSH software installed by default.

SSH access policy

We encourage users to use one of our Linux systems for their appropriate tasks:

Hostname	Operating System	Hardware	Architecture	Users with access
go.eecis.udel.edu	Ubuntu 20.04 Linux	Physical (formerly a VM)	x64 (amd64)	Academic
catan.eecis.udel.edu	Ubuntu 20.04 Linux	Physical machines	x64 (amd64)	Research

Note: catan load balances between multiple servers. That is why when you connect you will notice the hostname has a number, e.g. catan1.eecis.udel.edu.

The preferred remote access systems are catan.eecis.udel.edu (research), and go.eecis.udel.edu (acad). These servers allow remote ssh access from off-campus. Other ECE/CIS administered servers allow ssh connections from systems on campus networks (including via the UD VPN). Connections from other networks are blocked.

Usage of remote-access hosts

The remote-access hosts are shared systems, so the following policies are in effect:

CPU Limits

No process on the remote access hosts may run for more than 100 cpu hours, after which it will be automatically killed. If you will need more than 100 cpu hours, you will need to restart your process.

Regular reboots

Each remote-access system will be rebooted monthly so that security patches may take effect in a timely manner. catan1/2/3/4 will be rebooted on the Monday following the first/second/third/fourth Friday of a month, respectively. On each of these Fridays, the load balancer will stop forwarding new connections to the given machine.

go will be rebooted when needed as course loads permit.

Limited Access Servers

EECIS hosts several servers & clusters specific to different research groups in the department. Should you need access to such a system, express permission is needed from the faculty member owning the system.

Our help desk is the place to ask for and/or grant these permissions.