CSLinux SSL key changes

New servers were added to the pool of servers for cslinux on 1/28. The new servers had a different SSL key, so you may have received an SSL key warning message in your SSL client about a possible security issue.

We have reverted back to the old SSL key for cslinux to prevent these warning messages. If you have already replaced the SSL key, you may have to switch back to the old SSL key in your SSH client.

Here is the list of valid keys for cslinux to verify on your client:

256 SHA256:2TVE7PC2LVxvnVivdn7/GtcyWlS+Fnjqnd2J/QL1cT4 en-cc-linux01.coecis.cornell.edu (ECDSA)
2048 SHA256:jevpn5Ako2pibJ1LI71FOj5Lgu/ui7C4yNn37oNXaoE en-cc-linux01.coecis.cornell.edu (RSA)
256 SHA256:S/nx2/OXeHyvxP6lT5qWFa99MokJnzFL6Fl+xJsTUEU en-cc-linux01.coecis.cornell.edu (ED25519)

Department VPN’s are moving to Two Factor Authentication

CIT is migrating Cornell Department VPN’s  to Two Factor Authentication between now and 12/31/2020: https://it.cornell.edu/news/two-step-login-requirement-departmental-vpns/20201116

Directions on how to use Two Factor Authentication for VPN can be found here: Windows, Macintosh, Linux, and mobile devices

If you are not already setup for Two Factor Authentication, please follow these steps:


CIS PhD email alias sending broken due to Two-Factor authentication deployment -7/21/20

Cornell recently turned on two-factor authentication for all student accounts:

A side-effect of this is that now external SMTP and IMAP clients (like GMail) no longer work to send from @cs.cornell.edu and @infosci.cornell.edu email aliases

  • Currently there are a few work-arounds:
    • Use Mail client like Outlook, or Apple Mail…others listed at link above.
    • Use Outlook Web Access: http://outlook.cornell.edu
      • When authoring a new message in OWA, click the … at top of message and choose Show From.
      • Then add @cs alias if it isn’t already populated.
        • Click the three dots at top of email and choose Show From Enter your email alias in the now-visible From Field
    • Use Thunderbird (version 77+) to configure IMAP account with following settings:
      • Incoming – IMAP
        • Server: outlook.office365.com
        • Port: 993
        • Username: netid@cornell.edu
        • Security: SSL/TLS
        • Authentication method: OAuth2
      •  Outgoing  – SMTP
        •  smtp.office365.com
        • Port: 587
        • Security: StartTLS
        • Authentication Method: OAuth2
        • Thunderbird IMAP settings supporting Two Factor AuthenticationThunderbird SMTP settings supporting Two Factor Authentication

Welcome to Our New Site

7-17-2019: Update New ITSG Support Site

On 8/1/2019 https://it.coecis.cornell.edu/ will be the new place for CoE CIS Tech ITSG support information.

We will begin deprecating previous support pages starting on that date.


5-17-2019: New ITSG Support site

Summer 2019 the ITSG will be rolling out a new site for IT support topics.

We will be working to continually improve the site and its features.  If you have feedback you would like to contribute. please Contact The ITSG