The CEQURUX Firewall/VPN Gateway licence is determined by the number of users served by the firewall. That is the number of Internet users on the inside of the firewall who access Internet facilities including email via the firewall, plus the number of roaming users who access corporate facilities through the firewall. Users are not counted twice, so a single person with 5 email addresses will count as one user, and a user who accesses the Internet through the firewall while in the office and access corporate facilities through the firewall when out of the office counts as one user.