two ISP connections, three nics, and a NAT

Greg Donald destiney at gmail.com
Thu May 12 07:21:54 PDT 2005


I have two ISP connections, a DSL line and a Cable Modem line.  I want
to plug both connections into a FreeBSD box that has three nics in it,
one nic for each ISP connection and the last nic for my NAT.  How can
I bind the connections together without any other sort of router? 
I've used ipfw a bit over the past couple of years, and I've got a
basic NAT working for the other LAN PCs.  I can't seem to find any
docs on how to proceed with two connections however.  I've got two
connections for the sake of failover but it'd be nice to actually use
both of them instead of one or the other sitting idle all the time. 
Would it be as simple as adding a static route from each connection to
the other?

If anyone has any tips or URLs that'd be helpful.

TIA.


-- 
Greg Donald
http://destiney.com/


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