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Troubleshooting • Re: Raspberry Pi 5 + Google WiFi: Sounds like a NAT issue, but doesn't seem so

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In reading all this, I'm a bit confused as to what the actual problem is that you're (we're) trying to solve now. You said that you're good with the IP address you're getting (192.168.86.91). What happens when you change the port forwards to that address now?
The problem is that if I use port forwarding for the IP that RPi5 has, then no service is actually served in the real world. That is, I cannot ssh, see a webpage served from apache, and back when I had VPN running, that service too. Or, it was the case that these services were running *intermittently*. For example, I could ssh to RPi5 at 11am but I would not be able to do that at 11:05am, then I would be able to ssh at 11:30am, and then it would be off again later in time. Which is nuts, because I would not change anything in the port-forwarding part.

Eventually, however, I would end up in a situation where not only was I not able to ssh to RPi5 by doing so from outside of the LAN, I had the problem of not being able to ssh to RPi5 (receiving a "connection refused" error) even for attempts within the lan; like:

Code:

ssh MightyMouse314@192.168.86.91
That's why eventually yesterday I had to unplug the RPi5 from the wall socket as there was no other way to shut it down as I could not access it at all!
As far as changing that address, you most definitely should be able to change it if you want to, by changing the IP address assignment for the Pi5's MAC address in the router.

Yes and no. The Google Home App does not give too much flexibility as other routers. And I am sure they have themselves some glitches, but I don't think there is any serious bug that affects this process.

re fail2ban: I ran it for years, but finally got sick of it and have removed it. I found it to be sluggish and annoying when it did something I didn't like. That said, it shouldn't cause any problems unless it accidentally blocks something you don't want blocked. Presumably you know how to check for incorrectly banned clients? (I don't recall the actual fail2ban-client command any more...thankfully :lol: )
Yes, I can check that. That's what I meant by saying I am not banned. In either RPi3 or RPi5.
Finally, your last comment about using two different Google WiFi devices as router has me VERY worried. Are they both capable of giving out IP addresses? If so, that is likely a large part of your problem. Please explain in detail what you meant by that.
Only one of them operates as a router. It is a technology by Google that creates a mesh WiFi and extends the signal strength throughout the house. It is very convenient as my ATT router is in the walk-in closet of the master bedroom and the other Google WiFi will help for better reception in two bedrooms in the other side of the house.

Statistics: Posted by MightyMouse314 — Fri Mar 15, 2024 6:03 pm



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