User Guide 61Configuration and Management BasicsAbout upgrade optionsYou use two items to add upgrades to your Firebox X Edge: a feature key and a license key. It is important tounderstand the differences between these two keys.Your Firebox X Edge comes with certain features by default. These features are specified by the feature key. Ifyou purchase an upgrade for your Edge, you must apply a new feature key to your Edge.You do not immediately get a feature key when you upgrade your Edge, however. When you purchase anupgrade, you receive a license key. You must enter this key on the LiveSecurity web site to get a new featurekey. You then add the feature key to your Edge configuration or use the feature key synchronization featureto have the Edge connect to the LiveSecurity web site and download the new feature key.Available upgrade optionsUser licensesA seat license upgrade allows more connections between the trusted network and the externalnetwork. For example, a 5-seat user license upgrade allows five more connections to the externalnetwork.Mobile VPN with IPSec ClientsThe Mobile VPN with IPSec Clients upgrade allows a larger number of remote users to connect to theFirebox X Edge through a secure (IPSec) VPN tunnel. These users have access to resources on thetrusted and optional networks.WebBlockerThe WebBlocker upgrade enables you to control access to web content. For more information, seeAbout WebBlocker.spamBlockerThe spamBlocker upgrade allows you to filter spam and bulk email. For more information, see AboutspamBlocker.Gateway AV/IPSThe Gateway AV/IPS upgrade enables you to block viruses and prevent intrusion attempts by hackers.For more information, see About Gateway AntiVirus and Intrusion Prevention.Edge ProThe Edge Pro appliance software upgrade allows you to enable a second external interface on yourFirebox X Edge e-Series. If you configure your Firebox for multi-WAN, you can use policy-basedrouting to match a firewall policy with a specific external interface. You can also enable theVLAN tagging feature.