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From: <bp@www.zefox.net>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Getting along without a keyboard
Date: Tue, 17 Sep 2024 16:56:26 -0000 (UTC)
Organization: A noiseless patient Spider
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mm0fmf <none@invalid.com> wrote:
> 
> That's AP Isolation at work.  It stops Wifi devices communicating with 
> each. The idea is if you have lots of guest devices connecting, AP 
> Isolation stops them talking direct to each other and is meant to limit 
> a rogue guest device ability to do bad things to other guests.

The problem is solved, and I'm feeling quite stupid about the solution.

It turns out that setting a reserved DHCP address for the wireless client
MAC address un-isolates hosts on WiFi. Ssh and ping work now. Interestingly,
setting a static address at the client end, by itself, does not lift the
isolation. An old iMac with a static IP connected to the LAN via a WiFi-
Ethernet bridge still can't be pinged but connects outbound just fine.  

On reflection it makes perfect sense.....

I've played with the idea of getting an open-wrt-compatible router in the
past, but dropped the idea after finding nothing suitable at the local
thrift store. Perhaps I should look again.  

Thanks to everyone for all your help!

bob prohaska