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alve89
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Posts: 11
Joined: Sun May 01, 2022 4:02 am

Firewall rules for Bonjour between multiple subnets

Sun Jun 19, 2022 8:14 pm

Hi guys,

I just got my first MT (hAP ac3) and configured the basics (interfaces, subnets, ...). So my current setting is
- bridge-private (with ether4, ether5, wlan2)
- bridge-guest (currently with wlan1) and
- bridge-iot (with wlan3 as virtual slave of wlan1 and ether2, ether3)
- ether1 is set as DHCP client for WAN interface

- The firewall contains all the default configured rules.
- I'm running an Raspberry Pi with Avahi as mDNS reflector, connected to ether3 and ether4

My goals are:
- Lock the firewall down as much as possible but
- being able to AirPlay music from private to iot (which is the main goal because this seems the most complex as far as I understood all the Google entries which weren't helping me),
- accessing other stuff in the iot-subnet, especially Home Assistant on another Raspberry Pi

With the default FW rules I am able to play music from within private to my speaker in iot - but the rules are pretty basic, so I can probably do almost everything.

I am quite new to both RouterOS and "firewalling" (and also this complexity kind of networking), so I'd appreciate any help to make the system as secure as possible while being able to use AirPlay across multiple subnets.


Many thanks in advance and best regards!
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