Mobile Network Security vs Residential Broadband Network Security


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A friend of mine and I were talking about IPv6, and whether if you had a poorly-built consumer grade home router, if it made your network less secure because of global addressability, and the ability for someone to possibly reach my Brother printer, and hack that device as a way into my network. I then asked whether it was any difference than having a phone on a modern 4G/5G network, which also has global addressability, or do we consider ourselves more protected as 4G/5G capable phones are frequently patched, or do the mobile carriers do something themselves to protect the phones?

So, it made me wonder... in this day and age, do the carriers build in any different network security for their "landline" residential networks (FTTx / HFC / etc) vs network security for their mobile networks (LTE / 5G / etc)? Or have we converged, and any decent carrier would have the exact same consumer / residential protections built into their architecture regardless of access technology?

(I'm specifically referring only to data - and not fun old-school tech like SMS and Caller ID, which is a whole 'nother fun topic!)

Thanks in advance to the experts who reply!

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