Q: Passwords? A: Passwordless.

1. Q: Passwords?A: Passwordless. Some guy Computing Club, 02/01/2008

2. ENIGMA: appropriately named. • We’ve heard what is, now how do we use it? • In order to use it, you must sign on to it. • In order to sign on to it, you must have a password (everyone in Biostat Dept). • Email: Jiong Yang (jyang@jhsph.edu)

3. MAC attack • From Mary (Max) Weselcouch: Open the Terminal application found in Applications/Utilities on a Mac Type ssh username@enigma.biostat.jhsph.edu Enter your password when prompted. To change your password, type passwd, and then follow the prompts.

4. SSH / PuTTY • Either allow you access Enigma, as well as “biostat” server. • Google puTTY.exe download. • Get it. • Also, grab “puTTYgen.exe” • Save each to desktop.

5. QUICK START: Double Click PuTTY icon • Hostname: • For HTML pages: identity@biostat.jhsph.edu • For ENIGMA: identity@enigma.biostat.jhsph.edu • A black terminal appears, asks for your host name. Should be the same as your “identity” in your jhsph.edu email address: identity@jhsph.edu - enter that and hit return. • Then prompted for password. Type it, hit return. • You’re in!

6. Rigmarole be gone! • Let’s set up passwordless entry onto ENIGMA. • Double click puTTYgen.exe. • Click “generate” button. • Wave your mouse around region until green bar fills up (seriously…it is collecting your mouse position as a randomly generated sequence).

7. Continued from last slide • Enter passphrase, and confirm. • Click save private key. • KEEP YOUR puTTYgen WINDOW OPEN! • Now we have a generated key. We need to put it into our /home/bst/student/identity/.ssh folder • But first, WINSCP. This will allow us to transfer files very easily.

8. WINSCP.exe • Google for it. • Download, and install. Then double click icon and enter your info and hit Login:

9. See the transfers. • On the left, your computer. On the right, What you logged into.

10. Back to passwordless… • Go to the puTTYgen window that you kept open. • Highlight and copy the contents of big field:

11. Put the key into ENIGMA • In your WINSCP window, find on the right hand side your .ssh folder. • Get in the folder and double click “authorized_keys” • Paste in the stuff from puTTYgen. • Click save icon in toolbar, and close. • Close WINSCP, puTTYgen, and puTTY.

12. The test. • Open putty. Go to “ssh – auth” on the sidebar.

13. Tell putty where key is. • Hit browse or put in file path. DO NOT hit Open.

14. Need to save session. • Go to “Session” on sidebar (very top). • Enter your info, and name the Session in “Saved Sessions”. I named mine “bruceComputingCLUB”. Hit Save.

15. Hallelujah, You’re SAVED. • Now the session with the passwordless key is saved. • Hit Open. Will ask for pass phrase if you made one when you used puTTYgen. Extra level of security.

16. Keyboard shortcuts • Next time you click on putty.exe, you can load the saved session you just built. • OR… • Be cool. • Keyboard shortcuts. Right click on putty.exe icon. Click create shortcut. • Name the shortcut “puTTYENIGMA”

17. …continued • Right click “puTTYENIGMA” • Scroll to the end of “target” field and put • - load “BruceComputingCLUB” • Where “BruceComputingCLUB” is what you named your saved session. DON’T CLOSE

18. …continued • Move cursor to Keyboard Shortcut. • Then hold down ctrl, alt, p. “ctrl + alt + P” should appear. • Now hit ok.

19. The real test. • Casually say, “What’s up?” while looking at someone logging into ENIGMA the old way while simultaneously hitting “alt + ctrl + p” and nonchalantly go on to the cluster. • Type R. Hit enter. • To quit R: q(“no”) • To quit terminal: exit

20. WINSCP • Can make WINSCP passwordless, too. • Put in private key file (leave password blank): • Click save, name it “something”.

21. WINSCP • Can implement keyboard shortcut as well. • Right click winscp icon / make shortcut • Right click shortcut / properties • End of target field, -load “something” • Move cursor to shortcut key field • Push the short cut (ctrl+alt + [blank] ) • Save. Done.