SSH Remote Connections &
X11
Macs can connect to the cluster
computers through SSH. SSH is a secure remote connection which
allows you to login and run programs on the Linux computers in the
cluster from your own computer anywhere on campus. (If you are
located off-campus, you will need to use VPN as well, please see
our VPN HOW-TO page.)
To connect to a cluster computer, launch Terminal (located in
Applications->Utilities) and type in the following:
ssh -X username@hostname.helios.nd.edu
where “username” is your own netid and “hostname” is the name of
the computer you are trying to connect to. (List of Computer host-names in the Cluster)
NOTE: In order to open windows and use the
graphical environment, X11 needs to be installed. If it is
installed, it will be located in Applications->Utilities. If you
do not have it installed, you can find it on your Mac OSX install
disc. (X11 is installed by default on 10.5 Leopard).
Follow these steps to install X11 from your Mac OS install
disc:
- Insert your Mac OS X install disc. (If you have two discs it
will be the "Install Disc 1")
2 In the window that pops up double click on "Optional Installs" (You may need to scroll down)
3 In the new window that pops up double click on "Optional Installs.mpkg"
4 In the installation window click Continue.
5 Read through the License Agreement and choose Continue if you agree.
6 Click the triangle next to "Applications" in order to expand the directory.
7 Put a check in "X11".
8 Click Continue.
9 Click Install.
10 Wait for the installation to complete and then click Close when it is complete.
If X11 is properly installed, it will open automatically from the Terminal when needed.