the thing I don't like about the lb2 is that it does not do stateful packet inspection, you could get spoofed, in fact mine fails the shields up tests. It also quit working while I was configuring it and there does not seem to be a hardware reset ... so it's out of service. There are some spi firewalls with dual wan and failover for under $400 but I have not tried any of them yet..
Freinds, I am looking for a failover support such that during failover my trading terminal is not disconnected. Freinds, so far I have read about XINCOM 502. Can you tell me whether your trading terminal gets disconnected during failover and you have to re login ?