SSH Access
Overview
Secure Shell or SSH is a network protocol that allows data to be exchanged using a secure channel between two networked devices.
Used primarily on Linux and Unix based systems to access shell accounts, SSH was designed as a replacement for TELNET and other insecure remote shells, which sent information, notably passwords, in plaintext, leaving them open to interception. The encryption used by SSH provides confidentiality and integrity of data over an insecure network, such as the Internet
SSH comes installed on Macintoshes running OS X.
Connection Issues
EIT runs a monitoring daemon on every publically-accessible SSH host that will deny IP addresses if that IP generates too many bad logins. This reduces the chances for random account lockuts, denial of service attacks, and brute-force password guessing.
If a host begins to deny your IP address after you’ve entered an incorrect username or password many times, please use the CEC, SEAS, or CSE VPN as appropriate, which will give you an internal IP that is automatically whitelisted by the daemon. You may also receive an IP address from your ISP that has been already blocked due to a previous user having a malware-infected machine. The IP block will time out after a period of days. If VPN use is impossible, we can temporarily whitelist the IP address.
We regret any inconvenience these basic security measures cause. These SSH attacks are now a common attack vector on the Internet, and EIT recommends firewalling SSH and using the VPN exclusively for all hosts in Engineering. This daemon is not run on firewalled hosts.
Connecting
Java base SSH client for grid.cec.wustl.edu: Here If the pop-up window dos not appear, press Enter.
To install a SSH client on your local computer, download the software here.
This is a list of some of the machines in EIT that support SSH sessions:
grid.cec.wustl.edu - Linux server for undergraduates in School of Engineering
imbrium.seas.wustl.edu - Research and class sever for School of Engineering
To start the SSH connection, select Quick Connect. Enter the Host Name you want to connect to and your User Name. In the next pop-up window enter your Password.
