On that configuration, does setting the ISP router to "bridge mode"(what's half-bridge really) lower the possibility for backdoors/man-in-the-middle attacks or something, because some parts of the OS not running, eg. firewall, NAT, etc.?
Is it worth to gain small security (if there is any) but losing the redundancy of a second router/wifi AP and have the wifi always on because of configuration access?
What I thought about is if someone sneaks to the ISP router over a backdoor and sniffs my traffic or routes it to somewhere. So no routing, no problem...thats what I thought..
I don't know if this has ever been done on consumer devices but I read that its possible in theory and back doors have been found on some routers.
Am I too paranoid?
Edit: It all comes to the question: Will this pseudo (half) bridge mode (where the traffic is just forwarded to a ethernet port) on the ISP router help on that issue?