I have two DSL lines in my office. I want to setup a
linux system acting as a firewall and gateway (or
bridge) which will connect the two routers to my
office LAN as shown below. The system will have three
ethernet interfaces: two for the routers and one for
connecting to the LAN through the switch.
+-------------+ +----linux--PC--+
| DSL Router | | |
| static IP |===<>--firewall |
+-------------+ | | +----------+
| <>=== LAN Switch
+-------------+ | | +----------+
| DSL Router |===<>--firewall |
| static IP | | |
+-------------+ +---------------+
<> ethernet interfaces
Both the routers have static external IPs. I want the
traffic to be equally divided between the two DSL
lines and in case one of them is down, the other one
should take up the entire load. The linux box will
also function as a firewall. Now how should I go about
configuring the system. Is it feasible to have two
parallel firewalls on the same system ? How do I
configure the routing to meet my requirements.
Thank you,
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