sudo openconnect -vvvv --timestamp --dump-http-traffic \
  --protocol=anyconnect \
  --useragent='AnyConnect' \
  --gnutls-priority="NORMAL:-VERS-ALL:+VERS-TLS1.2:+RSA:+AES-128-CBC:+SHA1" \
  vpn-ac.uni-heidelberg.de/2fa