Until recently, I used a Red Hat Linux box (2.2 kernel) to masquerade and
firewall my LAN to the Internet. I just needed a static default route on
the Linux box to make everything work.
Now I've got an ADSL connection to PacBell (pbi.net) and a T1 to UUNET. The
ADSL connection uses a simple Alcatel modem, while the T1 uses a Cisco
2620. The Linux box has 3 interfaces, one to each provider and one to the
I'd like traffic to use both interfaces, whichever makes most sense for a
given connection. For example, a connection to another UUNET customer
should go out the T1, and connections to PBI customers and servers should
go out the ADSL line.
What do I need to do to make this happen?
The Cisco isn't running any router protocol, and is just handing packets to
the router at "the other end".
I tried "ripquery" (a RIP utility that comes with the routed RPM) from my
Linux box to the ISP router at PacBell and to the Cisco and both attempts
resulted in "query refused". I've got routed running but I'm guessing it's
not accomplishing anything given the ripquery results.
I suppose I could use static routes for 64/8 and 65/8 and let all other
traffic take a specific interface, but it seems like I should be able to
dynamically assign a route based on cost to the destination.
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