You can bind inbound/outbound traffic by protocol, but not inbound or outbound separately from what I remember.
If you did separate your traffic on different wans, you have to be in load balancing mode. Failover mode only uses one wan at a time. Hope this helps!
Huntsville's Premiere Car and Bike e-magazine: www.huntsvillecarscene.com
Huntsville's Premiere Car and Bike e-magazine: www.huntsvillecarscene.com