Thanks Shaun,
I am unsure if this applies to my specific case.
I have two (similar, but not identical) Modem/Routers currently both on the same LAN segment (192.168.7.1 and 192.168.7.2) the first one is also my DHCP server/uplink the second (which has public IP) is used to reach my only “ORANGE” server (all port are redirected to it).
I would like to put IPFire (or another firewall if it is unable to handle what I need) between modem/routers and GREEN/ORANGE to obtain:
- better handling of redirections, possibly with multiple servers
- connection failover: if uplink goes down use “incoming handler” to reach the Internet; if second modem/router dies I won’t be reachable from outside, but I don’t think it can be helped.
- failover should be handled with some kind of off-site ping, as the modem/router will always be reachable, even in case of connection failure (which is not uncommon, unfortunately).
I am beginning to doubt IPFire can handle this and thus, if I’m right, I would appreciate some advice.