Is port forward of discovery port 21025 appropriate for multiple devices on LAN?

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1

Good day to you all,

I understand the reasoning for port forward of protocol i.e. 22000, and in my case I will be substituting 22000 with my internal IP v4 address i.e. 22100, 22101 etc.

I’m wondering if I need to do the same with the UDP discovery broadcasts port? Currently, I’m thinking I don’t need to port forward 21025 to a particular device, but only need to ensure that port is open for any device to use. Would someone with a bit more understanding of what is necessary regarding discovery via UDP respond and correct or confirm my presumption?

2

There’s no need to set up forwards for anything other than the sync port (i.e. what defaults to 22000/TCP). If the devices have a local firewall, you may need to tell it to allow the local discovery stuff though.

http://docs.syncthing.net/users/firewall.html

3

Thank you for your assistance, and guidance.

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