Hi folks, network newbie here so apologies if this is a dumb question!
My Macbook Pro (M1 Big Sur 11.6) has recently downloaded around 15gb of data - not triggered by me directly. Having checked my FWG (V.1.973) Network Flows, I have 'Download' from IP Address 169.254.214.111 and when I click on it, my FW app states Flow Detail as 'Direction' Outbound and 'Downloaded' 15.54GB. The ipinfo.io information states the ip address as a 'bogon'. There is also an 'upload' that states Flow detail as 'Direction' Outbound and 'Uploaded' 353mb.
A brief search on web suggests that these comms with a bogon is probably not a good thing! BTW, there is nothing on my local network with that IP address.
So a couple of questions if I may seek some advice from those that know what they're doing please?
1) Whilst I have now 'blocked' this IP address, is there any way of blocking IP addresses not registered by IANA.
2) On a non FWG question, I can't seem to 'see' anything that was actually downloaded to my Mac. Whilst I have Bitdefender running (full system scan is clear) and Mac OS device Firewall on as well as the usual PW to change any system files, is there a simple way of determining what was actually downloaded?
I'm poised to do a complete re-install on Mac but would prefer to avoid if any of you folks have seen this behaviour before and concluded that it is somehow normal. In any event, a solution to question 1 might stop this from happening again.
Like I say, I'm not hugely technical but can learn quick if you have any suggestions or pointers! ;)
Thanks very much in advance.
Edit: FWG is in Router mode
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