Openconnect makes it easy to use the University of Sydney VPN on Ubuntu.
sudo apt-get update sudo apt-get install openconnect
sudo openconnect -u <unikey> --passwd-on-stdin vpn.sydney.edu.au <type your password here there is no prompt>
You should see something like this
POST https://vpn.sydney.edu.au/ Connected to 22.214.171.124:443 SSL negotiation with vpn.sydney.edu.au Connected to HTTPS on vpn.sydney.edu.au XML POST enabled Please enter your username and password. POST https://vpn.sydney.edu.au/ Got CONNECT response: HTTP/1.1 200 OK CSTP connected. DPD 30, Keepalive 20 Connected as 10.48.18.235, using SSL Established DTLS connection (using GnuTLS). Ciphersuite (DTLS0.9)-(DHE-RSA-4294967237)-(AES-256-CBC)-(SHA1).