A little more information.
I have the default 'openplotter' access point configured on the RPI4 on-board wifi adapter (with a non-default wifi passphrase of course). In addition, I stuck a wifi-dongle in the USB port and furnished wpa_supplicant.conf with the credentials of the marina wifi. This provides internet connectivity not only to the openplotter, but also to the wifi clients that are attached to the openplotter access point. So far, I was quite chaffed with this! However, because my signalk's udp nmea port was accessible from the entire wifi segment, I suddenly found values in my signalk database that must have come from some other boat, and hence I found out that my marina wifi did not isolate clients. I have already logged an issue with signalk to limit the interfaces that the nmea listeners register to. Strictly spoken, this is not an openplotter issue but a raspbian thing. However, openplotter owners might be at risk like I am.
I have looked into wpa_supplement.conf parameters, hoping I could specify client isolation here, but it does not seem to sit here.
I have the default 'openplotter' access point configured on the RPI4 on-board wifi adapter (with a non-default wifi passphrase of course). In addition, I stuck a wifi-dongle in the USB port and furnished wpa_supplicant.conf with the credentials of the marina wifi. This provides internet connectivity not only to the openplotter, but also to the wifi clients that are attached to the openplotter access point. So far, I was quite chaffed with this! However, because my signalk's udp nmea port was accessible from the entire wifi segment, I suddenly found values in my signalk database that must have come from some other boat, and hence I found out that my marina wifi did not isolate clients. I have already logged an issue with signalk to limit the interfaces that the nmea listeners register to. Strictly spoken, this is not an openplotter issue but a raspbian thing. However, openplotter owners might be at risk like I am.
I have looked into wpa_supplement.conf parameters, hoping I could specify client isolation here, but it does not seem to sit here.