Welcome to the official support page for the Department of Computer Science at William and Mary. You can use this website to see hardware specifications of nodes on our network. We have also compiled a list of helpful tips for getting started in a Linux environment. If you have any questions or concerns, you can reach us at cs-support@wm.edu or submit a CS Support ticket with the button below.

Tutorials

What is the certbot command?

To issue an SSL certificate using Sectigo's ACME Enterprise endpoint with Certbot, use the following command:

certbot certonly --standalone \
  --non-interactive \
  --agree-tos \
  --email This email address is being protected from spambots. You need JavaScript enabled to view it. \
  --server https://acme.enterprise.sectigo.com \
  --eab-kid 6c93efa8a02e4d8f7cec139c5ed2affd \
  --eab-hmac-key K3cTajrdnFYp0c3TdX5Te5UjB3NfA8IEMQAdLNP83nGmkeke3hkcMwcEhv6i7GXEG5oQ2gu2IBcQhbYttZdpbz7w \
  --domain example.wm.edu \
  [--domain additional-domain.wm.edu]

 

Explanation of flags:

  • --certonly: Tells Certbot to only obtain the certificate without modifying web server configs.

  • --standalone: Runs its own temporary web server for domain validation (requires port 80).

  • --non-interactive: Prevents prompts; all options must be provided up front.

  • --agree-tos: Automatically agree to the Terms of Service.

  • --email: Email address for urgent expiration notices.

  • --server: Specifies the Sectigo ACME server endpoint.

  • --eab-kid: Your External Account Binding Key ID provided by Sectigo.

  • --eab-hmac-key: Your EAB HMAC key also provided by Sectigo.

  • --domain: One or more domains to secure. Add --domain multiple times if needed.

Be sure to replace:

  • This email address is being protected from spambots. You need JavaScript enabled to view it. with your admin email.

  • example.wm.edu with your actual domain(s).

This command is used in environments where automatic integration with Sectigo is set up via EAB credentials, such as institutional or enterprise systems.