this post was submitted on 18 Apr 2024
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A router usually can do all that but it also does a whole lot more, like NAT, DHCP, etc. Sometimes you need a just a switch that understands VLANs and link aggregation
Isn't there some overlap between NAT, DHCP and DNS, they feel like they should be the same thing? Or am I oversimplifying it? Because DHCP is assigning IP addresses, DNS is looking up IP addresses and NAT is saying that IP address points there ๐๐พ
Absolutely no overlap. Now, can a conventional home router do all those? Typically NAT and DHCP, but not too often DNS (except to point at a real DNS). That's like saying "isn't there overlap between milk and eggs? I mean, sure, they deal with animals and stored in the fridge, but used for different purposes."
Sure, they deal with IP addresses and some devices (home routers) can do 2-3 of those fuctions, but that doesn't mean they overlap. I can read a book (IP) and my book (IP) can be stored in a book bag or on a book shelf, but that doesn't mean myself, the bookbag, and the bookshelf overlap.
Thank you