Differences between revisions 3 and 6 (spanning 3 versions)
⇤ ← Revision 3 as of 2016-08-03 12:32:43 →
Size: 3188
Editor: KarlPinc
Comment: Add ssh access
← Revision 6 as of 2018-02-05 15:38:46 → ⇥
Size: 2174
Editor: JakeGordon
Comment:
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
<<TableOfContents>>
Line 2: Line 4:
Line 5: Line 6:
Implementation is expected to be complete by 2017. Implementation is expected to be complete in early 2018.
Line 8: Line 9:
Many of Babase's web pages are available to the public without restriction. However, those pages which access database content or allow data to be changed are restricted to those with [[https://oit.duke.edu/email-accounts/netid/|Duke NetIDs]]. Before accessing these restricted pages, your Duke NetID and its password must be provided. On a future date, a [[https://idms-mfa.oit.duke.edu/mfa/help|second authentication check]] (a.k.a. multi-factor or two-step authentication) may also be required.
Line 9: Line 11:
Many of Babase's web pages are available to the public without restriction. However,
those pages which access database content or allow data to be changed are
restricted to those with [[https://oit.duke.edu/email-accounts/netid/|Duke NetIDs]].
Before accessing restricted pages your Duke NetID, it's password, and a
[[https://idms-mfa.oit.duke.edu/mfa/help|second authentication check]]
must be performed.

If you do not have a Duke NetID contact the Lab for sponsorship.

[[https://idms-mfa.oit.duke.edu/|Setup your own]] 2nd level of authentication.
(Called multi-factor or two-step authentication.) The first step is to
login using your Duke NetID.		 If you do not have a Duke NetID, contact the lab for sponsorship.
Line 25: Line 16:
For most people the Babase web interface (phpPgAdmin) is all that's needed. More advanced users, particularly the data managers, require access to the Unix command prompt using SSH.
Line 26: Line 18:
For most people the Babase web interface is all that's needed. More advanced
users, particularly the data managers, have access to the Unix command prompt
using SSH.		 ===== Be on Duke's network =====
To use SSH you must first be connected to Duke's network. Ways to do this:
Line 30: Line 21:
==== The Duke VPN ====  * Be physically present at Duke
 * Set up the [[DukeVPN|Duke VPN]]
Line 32: Line 24:
To use ssh you must first sign in to the Duke VPN. Most will use the Duke-supplied
VPN software but FOSS users may wish to use the Open Source [[http://www.infradead.org/openconnect/|openconnect]] program instead.		 ===== Connecting with SSH =====
When connecting with SSH Duke requires you use 2-factor authentication. If you do not have a 2nd level of authentication, [[https://idms-mfa.oit.duke.edu/|set it up]]. (This requires having a Duke NetID.)
Line 35: Line 27:
===== Basic openconnect usage ===== It may not always be clear what sort of password must be entered where. These are the various prompts and how to respond to them:
Line 37: Line 29:
The '''openconnect''' command must be run as root.  * Password: This is a request for your Duke NetID password. You can skip this prompt
  . by configuring ~/.ssh/authorized_keys, adding your public key to the file as documented in sshd_config(5).
Line 39: Line 32:
The usual command for this is:

  openconnect -u ''YourDukeNetID'' --authgroup '-Default-' https://vpn.duke.edu/

Supplying your NetID and the authgroup saves you a bit of typing later.

You will be prompted for a password. This is your Duke NetID password.

The Duke VPN uses TCP port 443 at the Duke end. It also typically uses UDP port 443.
Your firewall will need to be configured to allow outbound traffic to these ports.
TCP 443 is used for https connections and will typically already be open.

The alternative to opening UDP port 443 is to use the '''--no-dtls''' argument. This will
also work if Duke changes their configuration to use port different from UDP 443.

===== Advanced openconnect usage =====

The problem with the above command, and the regular Duke VPN software, is that it
changes both the routing and the DNS server used by your box. This can cause problems,
from not being able to connect to non-web-based email servers to problems accessing
local LAN services like X clients or printers. Fortunately there is a solution that
sets up what amounts to a local virtual machine, though which you then connect
to the Duke side of things. This is established using the '''vpnc-script-sshd'''
helper script as follows (note the \ line continuation character):

  openconnect -u ''YourDukeNetID'' --script=/usr/share/vpnc-scripts/vpnc-script-sshd \
  --authgroup '-Default-' https://vpn.duke.edu/

The path to the '''vpnc-script-sshd''' script may vary on your system. The above
is for Debian based systems.

The next step is to use the new virtual machine. (Really, this is a new network namespace
on your local box.)		  * Passcode or option ...: The options are fairly clear. The passcode requested is
  . a one time password. These may be obtained from the Duke
  [[https://idms-mfa.oit.duke.edu/|multi-factor authentication site]] or generated by [[https://en.wikipedia.org/wiki/YubiKey|YubiKey]] hardware.

Contents

  1. Accessing Duke's Systems and Logging In
    1. Web Page Access
    2. Access to the Unix prompt with SSH
      1. Be on Duke's network
      2. Connecting with SSH

Accessing Duke's Systems and Logging In

Note that the systems described on this page are in the process of being implemented.

Implementation is expected to be complete in early 2018.

Web Page Access

Many of Babase's web pages are available to the public without restriction. However, those pages which access database content or allow data to be changed are restricted to those with Duke NetIDs. Before accessing these restricted pages, your Duke NetID and its password must be provided. On a future date, a second authentication check (a.k.a. multi-factor or two-step authentication) may also be required.

If you do not have a Duke NetID, contact the lab for sponsorship.

Be sure to have cookies turned on for all of the above.

Access to the Unix prompt with SSH

For most people the Babase web interface (phpPgAdmin) is all that's needed. More advanced users, particularly the data managers, require access to the Unix command prompt using SSH.

Be on Duke's network

To use SSH you must first be connected to Duke's network. Ways to do this:

  • Be physically present at Duke

  • Set up the Duke VPN

Connecting with SSH

When connecting with SSH Duke requires you use 2-factor authentication. If you do not have a 2nd level of authentication, set it up. (This requires having a Duke NetID.)

It may not always be clear what sort of password must be entered where. These are the various prompts and how to respond to them:

  • Password: This is a request for your Duke NetID password. You can skip this prompt
    • by configuring ~/.ssh/authorized_keys, adding your public key to the file as documented in sshd_config(5).
  • Passcode or option ...: The options are fairly clear. The passcode requested is

DukeAuthentication (last edited 2018-02-27 16:45:05 by JakeGordon)

Wiki content based upon work supported by the National Science Foundation under Grant Nos. 0323553 and 0323596. Any opinions, findings, conclusions or recommendations expressed in this material are those of the wiki contributor(s) and do not necessarily reflect the views of the National Science Foundation.