Yes, in a couple of ways. By default we prioritize all VPN tunnels above background traffic like file transfers and YouTube. In addition, we can prioritize traffic within VPN tunnels by honoring QoS tags that your firewall places on VPN packets to differentiate traffic within the VPN. So for example, if your firewall marks VoIP traffic inside your VPN with a certain DSCP tag, we can match on that tag and prioritize the VoIP above other traffic within the VPN. For more details please contact us to discuss.