Support FAQ | School of Computing

School of Computing Resources

Students enrolled in courses (CSCE, SOFT, and RAIK) taught by faculty of the School of Computing, (CSCE, SOFT or RAIK) automatically have accounts on the nuros.unl.edu, (formerly known as cse-linux-01.unl.edu) server. To access this server, the easiest way is to open a terminal window in MacOS, or the Command Prompt or PowerShell in Windows 10 or 11, and use the ssh command:

ssh jdoe2@nuros.unl.edu

Substituting your MyRed login for jdoe2 in the command and entering your MyRed password when prompted. If you have never logged into the nuros.unl.edu server, a new home directory will be created for you. The nuros.unl.edu server offers a variety of software development tools, frameworks and services including MySQL server accounts. You can also access nuros.unl.edu using the NoMachine application if a GUI interface to the server is needed.

Some students may need a School of Computing (SoC) account (refered to as your CSE account) if they are doing research with faculty or accessing legacy software that is only available on the legacy CSE systems. This CSE account is used to access legacy SoC servers, websites, and network shares. A CSE account is separate from a My.UNL account (e.g. jdoe2) which is used to access UNL services like Canvas, Box, and Microsoft 365, and a TrueYou account (e.g. 12345678) which is used to access NU (system-wide) services like MyRED and Firefly. Usernames for CSE accounts do not contain any numbers, and the password for your CSE account is not synchronized to your My.UNL or TrueYou account password. If you have been told by an instructor or faculty member that you need to access the legacy systems using a CSE account, you can create one online at https://cse.unl.edu/claim by entering your full @huskers.unl.edu email address. After submitting your Huskers email address, you’ll receive a confirmation email at that address; click the link in the email to verify your identity and set up your new CSE account. This process will prompt you to choose your own password for your account, complete the consent form to agree to the university’s computer use guidelines, and then provide you with the username (or LoginID) for your CSE account. Make note of the username/LoginID for your CSE account, as it will be different than the My.UNL account username you use to access Canvas and other UNL services.

If you already have a CSE account (e.g. from a previous CSCE/SOFT/RAIK course) but don’t remember your username, go to https://cse.unl.edu/lost_login. If you have forgotten your password, go to https://cse.unl.edu/reset_password. Both links will prompt you to enter your full @huskers.unl.edu email address to have your CSE login sent to you or request your password be reset.

Below is a quick start guide on resources available for students enrolled in SoC courses.

Printing: A printer is available for all SoC students in Avery 15. To print to a printer, then follow the appropriate instructions below:

Windows: https://computing.unl.edu/faq/winprt
MacOS: https://computing.unl.edu/faq/macprt
Linux: https://computing.unl.edu/faq/lnxprt

Printer access is dependent on having the correct settings for your connection to the EDUROAM network on campus.

Storage: While OneDrive can be accessed through a web browser on our lab computers, when developing code on lab computers, we recommend using a thumb drive or mapping a network share. One is made available to School of Computing students (referred to as your home directory) You will first need to claim your CSE account by visiting the link at the top of this document, then follow the instructions below.

Mapping your home directory to lab computers: https://computing.unl.edu/faq/labdrv

Access your CSE home directory from a personal device:

Windows: https://computing.unl.edu/faq/windrv
MacOS: https://computing.unl.edu/faq/macdrv

Accessing OneDrive on lab computers: https://computing.unl.edu/faq/onedrive

Handin: If your course requires you to submit code or use the web grader you might be asked to use handin. The handin application: https://cse.unl.edu/handinuses your MyRed login and password to submit assignments.

Remote Linux Access: A lot of classes in the School of Computing will require you to access our remote Linux server using Secure Shell (SSH). The links below show the step-by-step process of using SSH to connect to the servers.

Windows: https://computing.unl.edu/faq/winssh
MacOS: https://computing.unl.edu/faq/macssh
Linux: https://computing.unl.edu/faq/lnxssh

Helpful links and getting additional support:

CSE Account Management Portal: http://cse.unl.edu/account
FAQs: https://computing.unl.edu/faq
Email Support: support@cse.unl.edu
CSE System Administration: Room 27 Avery Hall, 402-472-7757

PDF version of this document.

Account and General Issues

School of Computing Resources

ssh jdoe2@nuros.unl.edu

Below is a quick start guide on resources available for students enrolled in SoC courses.

Printing: A printer is available for all SoC students in Avery 15. To print to a printer, then follow the appropriate instructions below:

Windows: https://computing.unl.edu/faq/winprt
MacOS: https://computing.unl.edu/faq/macprt
Linux: https://computing.unl.edu/faq/lnxprt

Printer access is dependent on having the correct settings for your connection to the EDUROAM network on campus.

Mapping your home directory to lab computers: https://computing.unl.edu/faq/labdrv

Access your CSE home directory from a personal device:

Windows: https://computing.unl.edu/faq/windrv
MacOS: https://computing.unl.edu/faq/macdrv

Accessing OneDrive on lab computers: https://computing.unl.edu/faq/onedrive

Windows: https://computing.unl.edu/faq/winssh
MacOS: https://computing.unl.edu/faq/macssh
Linux: https://computing.unl.edu/faq/lnxssh

Helpful links and getting additional support:

CSE Account Management Portal: http://cse.unl.edu/account
FAQs: https://computing.unl.edu/faq
Email Support: support@cse.unl.edu
CSE System Administration: Room 27 Avery Hall, 402-472-7757

PDF version of this document.

How do I change my CSE password?

Your CSE login and password are synchronized across various School of Computing (SoC) hosted Windows and Linux servers and a subset of SoC web application services. Changing your CSE synchronized password on one SoC system will change your password across all SoC systems.

With the introduction of the nuros.unl.edu and cse-linux-01.unl.edu servers offering access using UNL MyRed login credentials (e.g. jdoe2), you may not need CSE login credentials. These instructions apply to users with CSE login credentials and will have no effect on your MyRed login password settings.

From the Web: Log in to the School of Computing Account Management Utility (AMU) (https://cse.unl.edu/account) with your CSE account credentials and then clicking on the change password link from the navigation links on the left.

From Unix/Linux: To change the passwords on a Unix or Linux command line, open a terminal and login to your account. At the shell prompt enter the command "passwd". Enter your current CSE password and press enter, then enter your new CSE password when prompted.

Password Reset: If you do not remember your CSE password, you can still reset it from the web. Using your web browser, navigate to https://cse.unl.edu/reset_password and enter your huskers.unl.edu UNL email address. The Account Management Utility application will reset your password to a random value and email that new password to your huskers.unl.edu account.

Please take the time to select a good password. When you change your password, the system will reject any password that does not meet the following complexity requirement: A password much be at least seven characters long; a password must contain at least three of the following four character sets: lowercase, uppercase, numbers and punctuations; a password cannot contain your login or your first or last names as part of the password.

Where is my SoC (CSE) email forwarded to?

As of May 20, 2019, university policy requires that all university communications be forwarded to the student's @huskers.unl.edu email. As such, all email sent your School of Computing (SoC) account will be forwarded to your @huskers.unl.edu email. No action is required on your part to enable this forwarding. For more information on this policy or if you are a new students and need to claim your @huskers.unl.edu email, please visit https://its.unl.edu/helpcenter/student-email-migration/.

SSH Connecting to Server Fails

Communication with the School of Computing servers via the Secure Shell (ssh) protocol can occasionally fail due to configuration changes. The Secure Shell protocol uses shared public keys to verify connection to systems, and a mismatching key on either side of the connection can cause your ssh command to fail.

An example of a ssh command failure:

cse$ ssh jdoe2@cse-linux-01.unl.edu@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!Someone could be eavesdropping on you right now (man-in-the-middle attack)!It is also possible that a host key has just been changed.The fingerprint for the ED25519 key sent by the remote host isSHA256:T5kekqZiuyhZ0vf74IpeN92Ll48p/0qoVfL1Y8Q1fow.Please contact your system administrator.Add correct host key in /Users/johndoe/.ssh/known_hosts to get rid of this message.Offending ECDSA key in /Users/johndoe/.ssh/known_hosts:28Host key for cse-linux-01.unl.edu has changed and you have requested strict checking.Host key verification failed.cse$

The example indicates that the host key for the cse-linux-01.unl.edu server has changed. Servers receive their host key from their internet service provider, and changes to host names or expiration of host keys will result in a new host key being issued.

To fix this problem, the clue is already present in the output; notice the line Offending ECDSA key in /Users/johndoe/.ssh/known_hosts:28. The message indicates the problem exists on your local system, in this case a Macbook pro, within the directory (folder) /Users/johndoe/.ssh where the known_hosts file has a line specific to the cse-linux-01 server. The fix is as easy as editing /Users/johndoe/.ssh/known_hosts and removing line 28. Now when you try the ssh jdoe2@cse-linux-01.unl.edu command, you will be prompted to accept a new host key, and once you accept the key you can then enter the password for the account.

How do I change my Linux systems login shell?

Your School of Computing (SoC) systems login shell defines how the department Linux workstations and servers (CSE and CSCE) will behave when you login. The shell is the user's interface to the Linux operating system allowing program execution along with capabilities to create, edit, and examine files and directories on the server. Shells also incorporate the elements of programmability by providing control flow statement-commands. This statement-command syntactic format varies with different shells, and some programs are sensitive to the shell in which they are launched. The choice of login shell can also affect the behavior of client applications that establish SSH protocol connections to the SoC servers.

Changing your login shell can be done anytime by logging into the SoC Account Management Utility (AMU) and selecting your shell under the Account Settings
menu.

Like your password, your choice of login shell is synchronized across all School of Computing Linux workstations and servers.

When does my School of Computing account expire?

For information on when your School of Computing (SoC) account expires, if you passwords are still valid or expired, and other SoC account related settings, visit the School of Computing Account Management Utility (AMU) page at https://cse.unl.edu/account.

What if I forgot my password or login?

If you have forgot your password, visit the School of Computing (SoC) Account Management Utility (AMU) page at https://cse.unl.edu/reset_password. Enter your email account, for students this would be your @huskers.unl.edu email. An email with a link to reset your password will be sent to your email.

To recover your CSE login id, visit the AMU login recovery page at https://cse.unl.edu/lost_login and enter your email. This will send an email to you containing your CSE systems login id.

Who should I contact for account related problems?

If you are unable to find a solution to your problem in this FAQ, your next step is to consult the School of Computing (SoC) Student Resource Center in Avery Hall (room 12). The Student Resource Center is generally open from 9 a.m. to 7 p.m. Monday–Friday. If the Student Resource Center is unable to address your problem, email support@cse.unl.edu. When you send an email to support@cse.unl.edu, please include your SoC login and provided as much detail as possible. When applicable, include the system you are using (a Windows system in the lab, the cse.unl.edu server, a Linux system in the lab, your personal laptop, etc.), the operating system on your personal device, the task you are trying to accomplish (date and time may help if you were using cse.unl.edu), the command you are running, any error messages returned, and any other information that would assist in focusing the diagnostics on your problem.

How do I check my disk quota?

If you are having issues saving file to your home directory (Unix) or your Z: Drive (Windows), you might have exceeded your disk quota.

Quotas are used to limit the amount of disk space used and the total number of files of each user. Disk space used is measured in blocks, where 1 block equals 1024 bytes(1KB).

There are two values (called limits) — a soft limit and a hard limit — for both the disk space used quota and the number of files quota. You can continue to increase your usage over the soft limit until you either reach the hard limit or the established time limit (usually a week). Once the hard limit has been reached, all further attempts at file creation will fail with an error message.

The simplest way to view your disk quota is to visit the School of Computing Account Management Utility (AMU) page at https://cse.unl.edu/account. After login, the AMU page shows various details about your account including your disk quota and usage.

To check your disk quota under Unix, use the command "quota -v" at the Unix command shell prompt.

Computer Lab Guides

Connecting to cse.unl.edu and other Unix servers with SSH from Windows

You can connect to the School of Computing (SoC) CSE server (cse.unl.edu) and other UNIX servers in the department using the PuTTY SSH client.

PuTTY can be downloaded from the this web site. After you have downloaded and installed PuTTY, you can use it to connect to cse.unl.edu.

Double click the PuTTY icon on the desktop or enter "putty" in the search bar to start PuTTY:

Enter "cse.unl.edu" in the Host Name (or IP address) field and hit enter.

The first time you connect to a remote host, you will receive a message stating: "The server's host key is not cached int the registry. You have to guarantee that the server is the computer you think it is." You should click "Yes" here.

Next, you will be prompted to enter a user name and password. This is your SoC user name and password; this example uses "sac" as the user name and cse.unl.edu as the login server:

If you are prompted for a Verification code: after entering your password, examine the user name you supplied. User names that end digits (1 through 9) are notSoC user names that can be used to login to CSE and other SoC servers.

How do I print from a Windows PC on campus?

New! Printing has changed, please use the updated instructions below.

To print documents from computer lab Windows PCs or your personal Windows PC laptop you will need to install a network printer.

Please note: Printing generally only works from on campus.

Launch File Explorer. Go to search in task bar and search "File Explorer" or select the File Explorer from the Windows System menu.

In the File Explorer address bar, type in \\its-acadprt-unl.unl.edu as shown.

Printing using CSNT is being decommissioned and no longer supported.

Printer access now uses your MyUNL credentials, not your CSE credentials

When you are asked to enter your network credentials, you will need to login with your MyUNL credentials. Your user name must be provided as MyUNL_ID@unl.edu where MyUNL_ID is your UNL login ID.

The Remember my credentials box must be checked for printing to work properly.

Once successfully authenticated, you will be presented with a list of printers. Printers are generally named by the building and room they are in. Now click on the printer you want to connect to and select connect.

NOTE: Only the below printers are available for students:

SoC_Avery15
SoC_Avery12
SoC_Avery12color

Alll other SoC printer have access controls for specific users in those areas.

Common Issues

On your personal device, make sure you are connected to eduroam and eduroam must be configured as a private network.

Norton Anti-virus and certain other anti-virus vendors will prevent outgoing SMB connections. Please use the UNL provided anti-virus software CortexXDR offered thru UNL ITS.

If Windows does not prompt you for credentials, or if you cannot browse the \\its-acadprt-unl.unl.edu network, the problem lies in the Windows configuration. Verify eduroam is a private (local) network, verify your system is fully updated to the latest Windows updates and then verify that the SMB client is enabled. Here are some Instructions for how to determine if your SMB Client is enabled, and how to enable it.

There are many caveats to windows printing. If you need help please email support@cse.unl.edu. You may be asked to bring your personal device (laptop) in to the support office if your problem cannot be resolved via email.

Accessing and Using Microsoft OneDrive

Microsoft OneDrive Storage

Microsoft OneDrive is free cloud storage for programs and data. Students, faculty and staff are eligible for this service.

OneDrive storage offers the advantages of cloud-accessible content, so your files are always available where you have cloud access. You can share folders (directories) on OneDrive with members of your project teams, thus enabling a simple shared project document space.

All UNL users will begin with 5 Terabytes of storage.
UNL users can access and use Microsoft OneDrive within a browser (Edge, Chrome, Firefox, etc.) from the lab computer systems.
On your personal devices you can access the browser-accessible version or download the OneDrive client application. Users who have installed Office365 provided by UNL have the OneDrive client installed as part of the Office365 suite.

Access Microsoft OneDrive in Computer Labs

To access Microsoft OneDrive from a lab computer, open a web browser (Edge, Chrome, Firefox) and enter the URL:

https://portal.office.com

Enter your UNL credentials, e.g. jsmith2@unl.edu, and press Next

You will be redirected to the UNL two-factor login page:

After completing two-factor authentication you will be redirected to the main Office365 page. From there you will need to select the OneDrive application from the menu:

Select the Office applications menu via the top-left corner of the page:

and select the OneDrive application:

The OneDrive application will open in a new tab or window depending on your browser settings.

File Transfer to OneDrive

Transferring your files up or down from OneDrive is performed using the Windows File Explorer application. To upload, select the file you want to upload using the File Explorer, and drag-and-drop it onto your OneDrive browser window.
To download, select the file you want within the OneDrive browser window, and choose the Download option from the menu:

The Download option presents a Save As window allowing you to save the downloaded source file anywhere on the Windows system, including other network drives.

OneDrive with MacOS

Using OneDrive on a personal Mac OS laptop can be done using the web interface or the Office365 OneDrive client application. The web browser access outlined above also works for Mac OS and the ability to drag-and-drop files from the Finder application offers easy upload capability while downloading mechanisms are identical. The OneDrive client application integrates the OneDrive files into the Finder:

How do I access my CSE home directory from a Windows PC on campus?

If you are working on campus from a computer lab or on your personal laptop, you might wish to map your home directory from the school server directly onto your laptop, so as to not have to transfer files up and down.

The instructions given are for Windows 10:

1. Launch File Explorer, there are many way to do this: From the start menu, select the Documents item to open the "File Explorer."

Or you can select the "File Explorer" from the Windows System menu.

If you have a "My Computer" or "My PC" icon on the desktop, you can double click on the icon to launch File Explorer.

2. In the File Explorer window, click on the Computer tab on the top of the window to display a ribbon, then click the Map network drive icon if shown:

Or right-click on "My PC" to show the 'map network drive' option.

This will open a "Map Network Drive" dialog.

3. In the dialog, type in "\\cse-smb1.unl.edu\login_id" without the quotes and where login_id would be your School of Computing CSE login ID. For example if your CSE login was csmith, your folder path would be: \\cse-smb1.unl.edu\csmith

4. Check on the "Connect using different credentials" checkbox, uncheck "re-connect at sign-in" and click on the "Finish" button.

5. When you are asked to enter your network credentials, you will need to login with your SoC credentials. Your user name must be provided as "CS.UNL.EDU\username". As in the example above, if your CSE username (login) was csmith, the user name value would be: CS.UNL.EDU\csmith

6. Provide your CSE password and Click "OK". You should see your home directory from the departmental server mapped as a drive in the File Explorer window.

If you are not offered the option to enter credentials or Windows returns an error indicating it cannot communicate or find the cse-smb1.unl.edu server, ensure you are connect to the eduroam network, and the eduroam network is private network. You can verify that you have the required Windows client service enabled using these instructions on Windows SAMBA settings.

Working Remotely

Campus Resources on Learning and Teaching Remotely

Connecting to cse.unl.edu and other Unix servers with SSH from Windows

You can connect to the School of Computing (SoC) CSE server (cse.unl.edu) and other UNIX servers in the department using the PuTTY SSH client.

PuTTY can be downloaded from the this web site. After you have downloaded and installed PuTTY, you can use it to connect to cse.unl.edu.

Double click the PuTTY icon on the desktop or enter "putty" in the search bar to start PuTTY:

Enter "cse.unl.edu" in the Host Name (or IP address) field and hit enter.

Next, you will be prompted to enter a user name and password. This is your SoC user name and password; this example uses "sac" as the user name and cse.unl.edu as the login server:

Connecting to cse.unl.edu and other Unix servers with SSH from a Macintosh

Launch a terminal window. Type ⌘-K to launch spotlight. Type "Terminal" and you should see the "Terminal" application. click to launch.
Type inssh cse-login-id@hostname where hostname would be cse.unl.edu or another server running an SSH server and cse-login-id is your login id (credentials) for the School of Computing (SoC) systems.

An example of this using the Terminal application: The user's SoC login id is 'jsmith'

Last login: Mon Jul 1 14:41:39 on ttys003 macbook-prompt> ssh jsmith@cse.unl.edu Password: Last login: Tue Jul 2 10:25:18 2019 from 101.431.103.46 ****************************************************************************** Welcome to CSE ****************************************************************************** The operating system on this computer was upgraded on March 18, 2018. Please contact "manager@cse.unl.edu" to report problems, request software or ask questions about this system. ****************************************************************************** cse.unl.edu-prompt$

On your first connection to a server, you may see a message from SSH indicating that the host authenticity is unknown.

macbook-prompt> ssh jsmith@cse.unl.edu The authenticity of host 'cse.unl.edu (10.211.11.120)' can't be established. RSA key fingerprint is 3f:1b:f4:bd:c5:aa:c1:1f:bf:4e:2e:cf:53:fa:d8:59. Are you sure you want to continue connecting (yes/no)? yes Password: Last login: Tue Jul 3 11:05:12 2019 from 101.231.303.416 ****************************************************************************** Welcome to CSE ****************************************************************************** The operating system on this computer was upgraded on March 18, 2018. Please contact "manager@cse.unl.edu" to report problems, request software or ask questions about this system. ****************************************************************************** cse.unl.edu-prompt$

This only occurs on the first connection to a host and you should respond to the question with a 'yes' (as shown above) so the host becomes authenticated.

If you are presented with a Verification code: prompt after entering your password, examine the cse-login-id you supplied to the ssh cse-login-id@hostnamecommand line. If the cse-login-id supplied ends in a digit, e.g. fred4, the login id is not a valid School of Computing CSE login.

Connecting to cse.unl.edu and other unix servers with ssh from Linux

Open a Terminal window. The instructions that follow are for Ubuntu Linux. Other distributions are similar.

Click on the grid button in the lower left corner.

Enter "Terminal" in the search dialog that appears.

In the window that appears when you click on the Terminal icon shown above, enter "ssh -Y username@cse.unl.edu". Substitue your cse user name for "username" in this command. You can omit the "-Y" flag if you do not want to use ssh X forwarding (and if you don't know what this is, you can safely omit it). The examples below use a user name of "sac".

The first time that you connect to cse.unl.edu, or any other Linux/Unix server, a dialog like that shown above will appear. Answer "yes" to this.

Then enter your cse password.

Connecting to the Windows Terminal Server from Mac OS

How to connect an Apple MacOS system to the School of Computing (SoC) Microsoft Windows Terminal Server:

1. On Your Mac open the "App Store" application and install the "Microsoft Remote Desktop" application. Please be sure to install version 10 of this application.

2. Launch Microsoft Remote Desktop.

3. Click the button labeled "Add Desktop".

4. Complete the Pop-up Connection Dialog as described below:

i. PC name: csnt-ts.unl.edu

ii. User Account: You can either choose "Ask me every time" or "Add User Account ..." (see below)

iii. Friendly Name: SoC Terminal Server

5. If you chose "Add User Account ..." above complete the Add User Account as described below:

Username: CS.UNL.EDU\username (where "username" is your SoC login ID)

Password: your cse-password

Friendly name: SoC Terminal Server or csnt-ts The choice is up to you

6. Click the Add button for the "Add User Account Dialog" and for the "Add Desktop" dialogs.

7. You will now see a window that looks like the following:

8. Double click the Desktop you just added "csnt-ts."

9. When you connect you will get a dialog like the one below. Click Continue.

10. You will either bet presented with a login screen or your csnt-ts desktop, depending on whether your selected "Ask me every time" or "Add User Account..." in step 4.

11. When you disconnect the blank preview or your "Saved Desktops" will be changed to a thumbnail of your actual desktop.

Connecting to the Windows Terminal Server (Windows)

The Remote Desktop Client appears in different locations in the start menu in different versions of Windows. If you are able to locate the Remote Desktop Client in your start menu, launch this application. If you are unable to find the client, then either search for "mstsc.exe" in the metro tiles screen or type it into the Run dialog.
Once launched, on the first dialog, enter csnt-ts.unl.edu in the Computer field and click on Connect.
You should see a dialog to enter your credentials. Enter your School of Computing (SoC) credentials here, however your user name must be of the form CS.UNL.EDU\login_id. Where login_id would be your SoC login ID. Then, click on "OK."
You may be presented with a certificate warning. Go ahead and accept the self signed certificate.
This should connect you to the remote terminal server. The remote desktop will likely replace your local desktop, to return to the local desktop, move your mouse to the middle of the top few pixels on the screen. A control bar will slide down, allowing you to iconify our remote desktop.
When you are finished working on the remote desktop server, please log off the remote server and don't simply disconnect the session. Disconnecting the session still leaves it running on the remote server and continues to utilize resources.

Connecting to the Windows Terminal Server from Linux

The instructions that follow are for Ubuntu Linux. Other Linux distributions are similar except for installing the "Remmina" program.

Click on the grid icon at the lower left of the screen.

In the search dialog that appears enter "rdp". The Remmina application should appear in the results. Click on that icon.

In order to connect to our terminal server you need to add a customized connection. Click on the green "+" symbol in the Remmina program and enter the following information:

Profile name: csnt-ts (or another name that you'd like to use).

Server: csnt-ts.unl.edu

User password: your CSE password

Domain: cs.unl.edu

Color depth: True color (24 bpp)

And then click the "Save" or "Save as Default" button.

Double click on the session you just saved.

A dialog may appear asking you to accept a certificate for csnt-ts. You should accept the certificate.

Accessing School of Computing systems using NoMachine - Remote X11 GUI access

NoMachine is a fast, multi protocol remote access client which allows RDP and X11 type connections to a variety of servers. We have a NX server installed on two servers; cse-linux-01.unl.edu and cse.unl.edu, which allows GUI X11 Desktop access to either of these systems. Below are steps on setting up a noMachine connection to cse-linux-01.unl.edu.

You can download and install NoMachine from https://www.nomachine.com/

To configure a new connection, after you launch noMachine:

from the Recent connections pane, click on ‘New’
for Protocol select NX
In the Host input enter ‘cse-linux-01.unl.edu’
for Authentication method select Password
select the Don’t use proxy radio button.
Name your connection and finally click on Done

Once you have configured a connection to establish a connection:

from the Recent connections pane, double click on the named connection
Enter your MyRed login credentials for the cse-linux-01.unl.edu server (username and password)
Double click on the Create a new virtual desktop icon

4. Click thru the next four dialogs that provide you an overview on using noMachine

For connection to the legacy cse.unl.edu server you must use a CSE login and password, which is separate and distinct from your MyRed login and is only used to connect to SoC legacy servers and web applications. You will not need a CSE login unless an instructor or faculty member has told you that you need one to access legacy research or instructional tools and/or data.

Tip: You can save your password, the connection type, and click on Don’t show this message again on the dialogs for one-click connection to cse.unl.edu

Note: Please log off when you are done working on cse.unl.edu. Simply disconnecting the NoMachine client will consume resources on the server and your session will be forcefully quit at somepoint, possibly resulting in loss of any unsaved data or settings.

Requesting a Virtual Machine (VM) for research and/or classwork

The School of Computing can provide students and faculty remote Windows or Ubuntu Linux virtual machines (VMs). These machines can be used by students needing a PC to run Altera or Xilinx to program FPGA boards who do not have a Windows system. If you have a research or instructional use case for a VM send your request for a VM to support@cse.unl.edu.

Can I save files on my VM or load software?

Yes. You can save your files on your system itself or access your network drive (Z drive). However, at present, we do not have the capacity to backup virtual machines. It the end user's responsibility to store their files on the Z: drive which is backed up or to store a copy of important files on their local storage by sharing their remote device with the VMs.

Can I access resources on my VM such as an external drive or Altera or Xilinx Board?

Yes. You will have access to USB devices. You can load and save data from an external hard drive or program an Altera or Xilinx Board

How Do connect an Altera or Xilinx Board to my VM ?

The software to program your board has already been loaded on your virtual machine.

You plug the board into your system running the virtual machine. The USB redirection set on the VM allows you to see your connected physical devices. You select your specific board both on your Horizon client and in the design software which then reads your board and allows you to program it.

How do I access the VM which has been provisioned to me?

Download the VM Horizon client on to your system using the appropriate link below. Install and launch the Horizon client. Create a new connection to https://cse-vmcs-01.unl.edu. Login to the connection server with your School of Computing (SoC) credentials. When you are connected, the server will open a window that contains the virtual machine(s) that are provisioned to you. Once you log in, the virtual machine will function as a separate system running on your current one.

You can download the Vmware Horizon Clients from:

For Windows: Vmware Horizon client for Windows

For Mac: Vmware Horizon client for MAC

How do I access my home directory from off campus from Windows?

For occasional transfer of file between your home directory on the departmental server and your personal computer, we recommend using a SFTP (Secure File Transfer Protocol) client. One such client is FileZilla.

You will need to download the FileZilla client, not the FileZilla server. Install and launch the FileZilla client. In the "Quick Connect" bar in the main FileZilla window, enter sftp://cse.unl.edu as the Host, along with your School of Computing (SoC) CSE server username and password and click on 'QuickConnect'. The Port field can be left empty if you specified the "sftp://" prefix as part of the host name.

Connecting to your home directory from a Mac from off campus

The simpler method to access your home directory (Z: drive) from off-campus is to use an SFTP client like Cyberduck. This will allow you to easily transfer files between your cse.unl.edu account to your local computer. While a free version of Cyberduck is available online, users are cautioned to be mindful to download Cyberduck from a reputable source, as the source code is readily available online and can thus be easily modified and made vunerable. A version is also available through the Mac App Store as a paid app. We recommend the paid app store version as it ensures the source as reputable.

To actually mount your files from an off-campus account you will need to configure a VPN client and then follow the instructions on mounting your drive from on campus. Both of these topics are discussed in other sections of this FAQ.

MySQL Database Account — Requesting and Connecting

MySQL is the general purpose database subsystem provided by the School of Computing (SoC) for student use. Each user is allowed one database. This database is automatically created after requested by a user and is named the same as your SoC systems username. Users can create as many tables as they want but we ask that they keep all databases to a reasonable size.

Requesting a MySQL Account and Database
Any user with a SoC account can request access to the MySQL server running on the cse-linux-01.unl.edu server. Users with legacy CSE server accounts can request access to the MySQL server running on the cse.unl.edu server. To determine if you already have a MySQL account, log in to the SoC Account Management Utility (AMU) page at https://cse.unl.edu/account with your CSE account credentials. Once you log in, click the Account Settings link on the left page. If you have already been granted a MySQL account on one of the SoC servers (cse.unl.edu, cse-linux-01.unl.edu, or nuros.unl.edu) you will see a message indicating on which system(s):

If you do not have any MySQL accounts showing on Account Settings, you will need to send an email to support@cse.unl.edu requesting a MySQL account. If you already have an account on the cse.unl.edu server, you may request a MySQL account on that system, otherwise your MySQL account will be created on the cse-linux-01.unl.edu server.

The MySQL credentials you receive will have a login that matches your CSE server (cse.unl.edu) username, but your password for the MySQL server is completely different from your CSE server password.

Accessing the MySQL server is done by one either logging into the cse.unl.edu server using your CSE username and password, or connecting to the cse.unl.edu server using a TCP/IP connection.

Connecting to MySQL Database
To connect to a MySQL database from the command-line on cse.unl.edu, type mysql -p and hit enter. The password you will be prompted for will be your MySQL password, which is different from your cse.unl.edu server password. Enter the MySQL password you received in the email message that was sent when you requested your account. You should be presented a MariaDB [(username)]> prompt from the MySQL application.

To connect to a MySQL database from the command line from another computer with the MySQL command line client installed. Run 'mysql -h cse.unl.edu -u YOUR_CSE_LOGIN -p' and hit enter. Note: the password you will be prompted for will be your MySQL password, which is different from your SoC password. MySQL passwords can be reset using the SoC Account Management Utility page.

TCP/IP connectivity requires authentication using your MySQL credentials and is supported on the standard MySQL service port, 3306, on the CSE server.

Zoom Meetings for Graduate Defenses

Graduate students, in conjunction with their advisors and/or committee members, can choose the platform they wish to use for their remote defenses. Zoom is strongly recommended, as it is paid for and officially supported by the university. All UNL faculty, staff, and students have access to Zoom and can host Zoom meetings with up to 300 people, so students can set up their own Zoom meeting for their defense and provide the link to for distribution as needed. More information about Zoom is available on the ITS service catalog page for Zoom at https://its.unl.edu/services/zoom/.

After finalizing a date and time for their defense, graduate students should schedule a Zoom meeting to facilitate their defense by following these steps:

To schedule a Zoom meeting, users must start at https://unl.zoom.us and click the Login link in the top right corner of the page, and then log in with their MyUNL account (same credentials as Canvas).
1. After logging in, use the blue Schedule a New Meeting button.
2. Populate the required Topic (meeting name, e.g. John Doe's Defense), When (date/time), and Duration fields.
3. The following settings are recommended:
  1. Registration: Do not click the Required box.
  2. Meeting ID: Generate Automatically
  3. Security: You'll be required to either enable a password or the waiting room feature, but can do both if you choose.
  4. Video: Defaulting video to off for both hosts and participants is generally recommended, as video can be turned on individually when needed.
  5. Audio: Both (this enables participants to call in from a telephone instead of listening to audio through the internet).
  6. Uncheck the "Allow participants to join anytime" option to prevent your Zoom meeting room from being used by a third party.
  7. Check the box to "Mute participants upon entry" to avoid interruption from participants speaking while their microphone is enabled.
  8. If you are expecting only UNL faculty, staff, and students to join your meeting, check the "Only authenticated users can join" to require participants to log in using their MyUNL account. Otherwise, leave this box unchecked so that anyone can join without logging in.
  9. If you want to record your presentation, click the checkbox for "Record the meeting automatically" and select "In the cloud". You'll receive an email message from Zoom after the meeting has ended, and it will include a link to your recording.
  10. Consider adding your advisor and/or another designee as an alternate host, which would allow them to assist with the Zoom meeting while you present if someone needs to be admitted in to the meeting (if you're using the waiting room feature), if another participant's microphone needs to be muted, or something similar.
Share the Join URL for your Zoom meeting with the School of Computing Graduate Secretary so she can include it in the announcement about your presentation.
Send your slide deck to committee members in advance so they can follow along from their own file if there are technical difficulties with the screen sharing functionality during your live Zoom meeting. If there is no animation or video in your slides, consider exporting them to a PDF file before sending to others.
On the day of your Zoom meeting (defense), make sure to log in to https://unl.zoom.us using your MyUNL credentials by clicking the Login link in the top right corner of the page before launching the meeting to ensure that you have Host priviliges to start the meeting and manage options while the meeting is in progress.
If you enabled automatic recording, you can pause recording after launching the Zoom meeting until you're ready to begin your presentation if you wish, but make sure remember to un-pause the record function at the appropriate time.
After launching the Zoom meeting, make sure to Join Audio and Start Video so participants can see and hear you.
Use the green Share Screen button to share your slides by sharing either a single application (e.g. PowerPoint) or your entire desktop.
Make sure to use the red End Meeting button once your presentation has been completed. This closes the Zoom meeting for all participants and stops the recording.

With the approval of your committee, consider recording segments of your presentation in advance using a tool like VidGrid and sending a link for the video(s) to committee members so they can view it ahead of time, saving the live Zoom meeting for questions and answers. This hybrid approach can help to mitigate technical difficulties with a live remote presentation.

Getting Help

If you need help, please send email to support@cse.unl.edu

Note: Please be sure to include your UNL user name in your email and, if you're asking about a School of Computing (SoC) specific topic, your SoC servers user name as well.

Email

Disabling forwarding from UNL email

The simplest way to disable forwarding from your UNL email account is to access your outlook mailbox using a web browser. Point your browser to mymail.unl.edu.

After you have logged in, make sure you are in the mail application, then click on the settings cog and then on "View All Outlook Settings" link as shown in the first figure below.

Then go to Mail -> Forwarding, remove an email address if present, and uncheck the "Enable forwarding" checkbox if checked as shown in the second figure below.

Where is my SoC (CSE) email forwarded to?

Accessing your email through a web browser

The School of Computing (SoC) accounts have an email address associated with your SoC account which is hosted by the cse.unl.edu server. All new student accounts are configured to automatically forward incoming email messages to their @huskers.unl.edu email account, and faculty/staff will have email forwarded to their @unl.edu email account.

We also do not recommend publishing or using your SoC email address, as these will no longer forward to @huskers.unl.edu or @unl.edu once your SoC account expires.

Webmail for Huskers Users (Students and Alumni)

All university students can set up an @huskers.unl.edu email account, which is hosted by Microsoft's ExchangeLabs. Unlike SoC email addresses, students can keep their huskers.unl.edu account after graduation, so this can become a permanent email address. Students also get to choose the email address when setting up a huskers.unl.edu account. To log in to the huskers.unl.edu webmail interface, visit https://mymail.unl.edu.

University alumni are also eligible for a lifelong huskers.unl.edu email account, see the University of Nebraska (UNL) Alumni association email for life for additional details.

Webmail for Office365 Users (Faculty and Staff)

The university's primary email service for faculty and staff is hosted by Microsoft's Office365. The Outlook Web App (OWA) is available at https://mymail.unl.edu.

Webmail for CSE-Mail Users (Legacy users)

SoC hosted web email services are provided by the CSE-Mail server. CSE-Mail is the email server for most SoC users who have an email address that ends in @cse.unl.edu.

The default SoC hosted web email client portal is called SquirrelMail, and is available at https://cse-mail.unl.edu/webmail/.
An alternate web email client called Roundcube is available at https://cse-mail.unl.edu/roundcube.

Either interface can be used interchangeably.

Webmail for CSE-Cyrus Users (Legacy users)

Some SoC faculty and staff have been migrated from the cse-mail server host to a separate, closed IMAP server called cse-cyrus. This server handles simultaneous connections from multiple email clients better than cse-mail does, but there is no shell (or any other non-IMAP) access to this server.

Web email account access for users with mail on cse-cyrus is available through the Roundcube interface at https://cse-cyrus.unl.edu/roundcube.

How to forward your SoC/CSE email (faculty/staff)

Email support@cse.unl.edu asking a forward be setup for your account. Please include your School of Compting (SoC) email (e.g. login@cse.unl.edu) and the desired destination email address.

Setting up Mac Mail on OSX 10.8+ (legacy users)

Launch Apple Mail (which will be known as Mail).
Select "Mail" from the menu bar, then select preferences. Or use the keyboard command. "cmd+,"
This brings up the preferences dialog. Select the "Accounts" tab on the top of the window. When presented with the accounts window click the plus button in the lower left corner to add a new account.

4. Select "Add other mail account" and click on "Continue."

5. Fill in the required information. Please use your full name, School of Computing (SoC) email address, SoC password and click on "Create".

6. Make sure "Account Type" of IMAP is selected and the mail server is "cse-mail.unl.edu". Enter your SoC login for the User Name and click on "Next". Note that the login does not have the "@cse.unl.edu" specified.

7. On the next screen enter "Mail" as the path prefix and make sure "use SSL" is selected then click "Next". Note The "Path Prefix" is a subfolder on your home directory where mail fodlers are kept. If not specified, your mail folders will be kept on your home directory.

8. For the outgoing mail server, again enter cse-mail.unl.edu and your SoC login and password and click "Create."

9. A new mail account will be shown on the preferences tab. Close the preferences tab to complete setup on your mail.

10. If you have issues, contact support@cse.unl.edu for further assistance.

Message Size Limits (Legacy users)

The maximum message size is 10MB for outgoing email messages sent through SMTP on cse.unl.edu and cse-mail.unl.edu. This limit applies to the entire size of the message, which includes the message body, headers, and any attachments.

If you absolutely need to send a message that is larger than 10MB, you can send a request via email to support@cse.unl.edu to have the message size limit temporarily increased on the server. However, large files should not normally be sent as attachments in email messages. Instead, please consider using OneDrive to share files.

Viewing your spam quarantine (legacy users)

Any email that is relayed through cse.unl.edu goes through a spam detection appliance. Any email the appliance deems as likely spam is quarantined.

Daily summaries of quarantined email are sent to users. Users can click on individual messages in the spam quarantine summary to view, deliver, delete or whitelist the sender.

Occasionally, however, it might be necessary to view your spam quarantine immediately. Point a browser to https://cse-barracuda.unl.edu and either log in if you already have an account, or make yourself an account if you do not. Please note that your username will be your School of Computing (SoC) login, not your email address on the cse.unl.edu server.

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