Logging in with Duo

Overview

This document will describe how to use Duo to log into Research Computing resources.

Using Duo Push

Method 1: Using Duo Push (if you have a smart phone and have downloaded the duo app)

Step 1. Type: ssh username@login.rc.colorado.edu into the command line. For example, if my username is jodo2018 I would type ssh jodo2018@login.rc.colorado.edu

Step 2. Enter your password when prompted, as duo:mypassword. For example, if my password is Ih3artdu0 I would type: duo:Ih3artdu0

Step 3. Wait for a push to your phone.

Using Duo SMS

Method 2: Using Duo SMS (if you do not have a smart phone or prefer not to use the Duo app):

Step 1. ssh username@login.rc.colorado.edu . For example, if my username is jodo2018 I would type ssh jodo2018@login.rc.colorado.edu

Step 2. Enter your password when prompted, as duo:mypassword,sms. For example, if my password is Ih3artdu0 I would type: duo:Ih3artdu0,sms

Step 3. A list of one-time-passwords (OTPs) will be texted to you via SMS. Another login prompt will appear on your screen. Using the first OTP in the list, login with your password as duo:mypassword,OTP. For example, if my password is Ih3artdu0 and my OTP is 330456 I would type (without quotes): duo:Ih3artdu0,330456.

Step 4. Note that the next time you login, you can either request a new list of OTPs using Step 2 and then enter the first OTP via Step 3, or you can just use the next OTP in the list, and skip directly to Step 3.

Using Duo Phone Call

Method 3: Using Duo phone call: (if you have a land line, or if you do not have a smart phone, or if you prefer not to use SMS):

Step 1. Type ssh username@login.rc.colorado.edu into the command line . For example, if my username is jodo2018 I would type ssh jodo2018@login.rc.colorado.edu

Step 2. Enter your password when prompted, as duo:mypassword,phone. For example, if my password is Ih3artdu0 I would type: duo:Ih3artdu0,phone

Step 3. Wait for a phone call. Answer the call, select option #1, and you will automatically be logged in.

Using the Duo Token

Method 4: using the duo token: (if you prefer a physical device, similar to the Vasco OTP. You have to arrange with RC staff to acquire a token. There is a small fee for this device. Email rc-help@colorado.edu for assistance):