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Remote shell access to your network account

Our shell gateways, reachable worldwide from anywhere on the internet, provide text-only shell access to your network account. (Once on the gateway, you can also connect to other machines in our building network.)

Technically speaking, our shell gateways speak SSH, SCP, and SFTP. (The latter two are used to transfer files between your network account and other systems.)

When connecting from outside the department, you must connect on port 31415. Your SSH client defaults to port 22, but should make it easy to change that to 31415. If you find yourself on a network that does not allow outgoing port 31415, we support the SPA mechanism for temporarily opening a wormhole to connect on a standard port that is unlikely to be blocked. We also try to answer questions on why we switched to 31415.

Since the gateways will have lots of users on them at the same time, be sure to never run heavy-duty computations directly on the gateway. Instead, after connecting to the gateway, establish a secondary connection from the gateway to another machine (such as your office desktop, or the chivo cluster for graduate students), and run your heavy-duty computations over there.

Different ways to connect to the shell gateway:

  • To use a java-based SSH client inside your web browser, simply click the desired gateway's name (see above).
  • If you are running Microsoft Windows and clicking the gateway name above doesn't work, or you use SSH often and prefer a better client, consider downloading one of the following two clients:
    • PuTTY [Download], [How to use]
      This elegant tiny SSH client is a quick download and does not require an Installer to be run.
  • If you are running Linux or Mac OS X, you could instead invoke ssh directly from the command line, e.g.: 
    ssh -p 31415 accountname@puma.math.arizona.edu

Gateway authentication:

To verify that you are not being duped by a rogue gateway, the first time you try to connect you will be presented with the gateway's RSA or DSA key fingerprint. The correct fingerprints are:

puma (RSA): eb:08:9f:80:3f:9a:96:8a:ca:3a:d4:c0:92:cd:a1:4d
puma (RSA/Babble): xipal-vimaz-kilem-pumud-dutyl-kypoh-nydyn-nelyn-tilih-hyzon-buxyx
puma (DSA): a2:31:2e:6e:5d:42:26:a8:60:99:08:8d:b8:46:9e:92
puma (DSA/Babble): xobob-nupyv-guced-lyfof-kicic-rehyk-syzuh-pezot-monet-celop-maxyx

gila (RSA): d7:07:93:32:c8:da:98:01:10:65:2c:c5:7c:b6:89:5f
gila (RSA/Babble): xulaf-cedis-ledad-garak-rogah-bacoz-nilog-mytyv-tepof-fukyg-faxex
gila (DSA): a0:56:b9:83:73:a8:6a:91:51:67:25:38:03:cd:aa:a6
gila (DSA/Babble): xomiz-befov-sozuv-gesuc-zuhyk-vohov-bodof-gykef-rozer-lutym-pyxyx

 

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