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berlin-open-wireless-lab / DAWN

Decentralized WiFi Controller
GNU General Public License v2.0
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[multicast mode] Allow binding to a specific IP instead of wildcard #218

Open rany2 opened 1 year ago

rany2 commented 1 year ago

I thought that setting server_ip would fix it, but it doesn't seem to check that value in multicast mode.

PolynomialDivision commented 1 year ago

What do you want to achieve with this? You want a node receiving everything while the other nodes receive the traffic via multicast?

rany2 commented 1 year ago

@PolynomialDivision The reason is that I have an encrypted L2 VXLAN over Wireguard for nodes to communicate securely over, it's used for RADIUS mostly and I don't want to have umdns multicast spam everyone else on my network. So putting it on the encrypted network makes everything a lot cleaner and more secure.

However, it wouldn't make much sense to do this if DAWN just listens on all addresses and some of these devices have no firewall due to being dumb APs.

rany2 commented 1 year ago

Also I should add that the first thing I tried was the UDP broadcast, but then I realized the messages are corrupted due to the large amount of stations (#217); which caused me to want to turn back to the most common and tested mode but not being able to set an IP to bind to was a deal breaker for me.