If you are a student or member of staff then you should have been issued with a password for Raven. If you do not have one see "How do I get a password for Raven?".
If you are a short-term visitor to a University Department or College, your host institution may be able to issue you with a ticket. Consult your host institution as to whether this is possible and where you will be able to use the facility.
If you authenticate using a Raven password, access to the CUDN and internet is unrestricted. You are reminded that it is never a good idea to send plain text passwords across a network – for your own protection use secure protocols, especially when using an open wireless network.