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Firewalls: what SHOULD I block?
(lemmy.wtf)
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this post was submitted on 27 Sep 2024
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You know enough to be dangerous...
Why would an ISP assign a public IP to a users device? That wouldn't make any sense. IPs are rare and expensive so that wouldn't waste it on you. Each customer gets one IP and that is shared for all devices via NAT.
What your describing doesn't make any sense
You're right, it doesn't make any sense. And it didn't make any sense at the time either. After setting up the router with a laptop, I moved the connection to the firewall but it refused to connect. When I finally got ahold of tech support they said the connection locks into the first machine that logs in and they had to release it so I could connect the new machine. And just like that the firewall was given a routable IP address and connected to the internet. Stupidest thing I ever heard of, but that's how they were set up. Now this was around 15+ years ago and I would certainly hope nobody is doing that crap today, but apparently that was their brilliant method of limiting how many devices could get online at once.
So some obscure thing you experienced 10 years ago is now the standard? I have been doing this a while and what you are describing is Franky crazy and I've never scene it outside of some business plans with bring your own device.
Who said anything about it being standard? I said I know this CAN happen, and I said it was quite some time ago. We can only hope this insanity isn't still in practice anywhere, but I learned long ago that expecting a corporation to NOT do foolish things will give me the same disappointing results as expecting money to come out of my ass. If there's a manager involved, then something on the tech side is going to get fucked up in the name of saving a buck. Therefore I cannot just assume OP gets a normal NAT address, nor can I assume they have any other firewall type device between them and the internet. With limited data, the best I can do is try and provide some general information, hopefully encourage them to ask more questions or provide more specific information, and just hope they don't have a ridiculously stupid ISP that makes things needlessly complicated.