load balance two DSL circuits

Do anyone know of a Linux firewall appliance I can download that will load balance two DSL circuits?  I want to combine the downstream....  Right now each have 1.5 mbps and I'm hoping to get around 3.  If no one know of a Linux/Unix software .ISO appliance I can download what's the least expensive physical appliance?
gopher_49Asked:
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Craig BeckCommented:
Load-balancing won't get you 3Mbps.  It will just let you put traffic on both lines, but that will be at a maximum of whichever line the traffic goes down, per client.

You can bond circuits, but if they're not bonded at the ISP end you'll get dropped traffic and that will probably result in worse performance than without the bonding.
Aaron TomoskyDirector of Solutions ConsultingCommented:
THE Linux firewall is pfsense. But like has been said, you can't get more than 1.5 off a single stream. And you have to push https all to one connection or it breaks ssl.
gopher_49Author Commented:
So bonding two DSL circuits is only an option is the carrier does it, correct?
Craig BeckCommented:
Yes.  If the ISP doesn't bond the best you get is load-balancing.

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