From the DEEP website:

Before you start:

This is a good time to get out your driver's license and the credit card you will be using to make your payment. If you have taken any Connecticut Hunter Safety courses, you should also have out one of your certificates.
Visa and Mastercard CREDIT cards are accepted for payment of license fees. Debit cards are not accepted.
This service requires the use of Internet Explorer 5.0 or higher or Netscape 6.0 or higher or Firefox 2.0 or higher. Throughout the transaction process, sensitive data transmissions between your browser and the server are secured (This site is certified by Digicert.) Information collected will not be disclosed to unauthorized parties except as required by state or federal law.
Transaction confirmations and related information will be sent if you provide a valid email address.
You will need a printer to print your license and sales receipt. The license you print at the end of your transaction is your official license and, after signing the license, you must carry it whenever you go into the field. In the event of printer or user error, you will be allowed to reprint your license. After you complete the transaction, you may reprint your license at any time by logging back into the system.
For answers to the most Frequently Asked Questions (FAQ), please refer to the FAQ page. Contact Customer Support with any comments, suggestions, and reports of problems.


Not that one would want to take the time and read the instructions...

https://www.ct.wildlifelicense.com/internetsales