[ILUG] Connection Failover via Tomato Firmware

[Ronan Mullally]

On Mon, 12 Jan 2009, Steven Kavanagh wrote:

> Does anybody know if this is possible as I can't seem to find any answers to
> it on the Tomato wiki? (Either that or my searching skills aren't up to
> scratch).

The simple answer is no.  You're going to have different IP addresses
associated with the DSL and wireless connections.  You won't be able to
send traffic with the source IP address from the DSL connection via the
wireless connection and vice versa.

An active/backup setup is more achievable, but as the source IP addresses
will change when you fail over from one connection any active sessions are
going to get reset.

If you want to do it properly then you'll probably need to build tunnels
from your edge router to an off-site box (ideally a router/server/firewall
in a co-lo), run traffic across those tunnels to the off-site box and from
there to the rest of the Internet.


-Ronan