lemmyng
@lemmyng@lemmy.ca
- Comment on ZFS High Availability with Asynchronous Replication and zrep 5 days ago:
Apart from the license incompatibility (which doesn’t stop it from being used by distros, as Ubuntu has shown): While it’s a fantastic filesystem for servers, it is also resource hungry and not suitable for small or portable systems.
- Comment on Novel attack against virtually all VPN apps neuters their entire purpose 1 week ago:
It has implications on the effectiveness of VPNs on public networks.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
- A static IP is actually not necessary, but what you need is a consistent identifier. For the server, that’s typically a DNS address, but for clients and peer to peer networks there’s other ways to identify devices, usually tied to an account or some other key kept on the device.
- For centralised communications yes, you would need an always online server. For decentralised networks, you just need a sufficient amount of online peers, but each individual peer does not need to be always online.
- Pretty much, yes. Even push notifications on cell phones work this way.
- Route, yes. Manually. VPN is usually not necessary. In modern web-based services this is typically done with websockets, which are client-initiated (so the client address can change), and which allow two-way communication and typically only require a keepalive packet from the client every minute or so.
There’s other reasons why universal addressing is not done - privacy, network segmentation, resiliency, security, etc. And while IPv6 proponents do like to claim that local networks wouldn’t be strictly necessary (which is technically true), local networks will still be wanted by many. Tying this back to phone numbers - phone numbers work because there’s an implicit trust in the telcos, and conversely there’s built in central control. It also helps that it’s only a very domain specific implementation - phone communication specifications don’t change very often. On computer networks, a lot of work has been done to reduce the reliance on a central trust authority. Nowadays, DNS and SSL registries are pretty much the last bastion of such an authority, with a lot of research and work having gone into being able to safely communicate through untrusted layers: GPG, TOR, IPFS, TLS, etc.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
Whoa, that’s a sizeable edit to the post! Regardless the answer is pretty straightforward: your VOIP client (either the device if you have one or the software) is connected to a VOIP service which acts like a gateway for your client. Since the client initiated the connection to the gateway and is keeping it alive, you don’t need to make any network changes. Once the connection is established, standard SIP call flows (you can Google that for flow diagrams) are followed.
So no, you router is not part of the cell service. The VOIP provider is part of a phone service that receives calls and routes them for you, just like the cell towers are part of a telephony provider that routes calls through the appropriate tower.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
Ah, I see we are resorting to ad hominem attacks now.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
Laptops don’t get a new IP address every time they switch from one AP to another in the same network either. Your cell phone will get a new IP address if it switches to a different cell network.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
A phone number does not uniquely identify a phone either.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
When you do call routing with a PBX each phone has an unique extension, equivalent to the private IP of each host.
Oh, and there’s also anycast, which is literally multiple active devices sharing an IP.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
Phone numbers can be spoofed, and SIM cards can be cloned. The analogy stands.
- Comment on Phones have unique phone numbers, why dont computers have unique computer-numbers? 2 weeks ago:
Sure they can. If you put a network behind a router they will share an egress/ingress IP. And there are certain high availability setups where computers share IPs in the same subnet for hot/standby failover.
- Comment on Fisker now expects to go bankrupt within 30 days 3 weeks ago:
GM had at one point been working on an eCrate block for conversions, but they seem to have abandoned it.
- Comment on ))<>(( 1 month ago:
I still have my HP 48 series calculator. It’s a sturdy beast.
- Comment on Someone should release Discovery with all the speeches removed 1 month ago:
If you remove the speeches from Trek, don’t you just end up with the kind of content everyone seems to be complaining about in JJ-Trek?
- Comment on Appreciation / shock at workplace IT systems 2 months ago:
Or they work in a regulated industry that requires pseudo-airgapped machines for remote users, e.g. the machine actually interacting with the systems needs to be within the controlled boundary but the company has a presence in multiple locations, so the solution is to have a Citrix server that the users remote into. But because the SSP also has access control requirements at every stage that take a long time to get updated to newest industry standards, the user still needs to have passwords rotated, MFA, and all that kaboodle.
- Comment on How does this math work? 2 months ago:
I wanted to keep it simple and avoid a factorial sum. My example also shows that the remainder sum goes up even when nothing is spent.
- Comment on How does this math work? 2 months ago:
You can’t just add the balances and expect it to amount to the same as the spend. Consider this: you spend 0, 0, 0, 50. Your balances are 50, 50, 50, 0. Adding up the balances you get 150. What does this mean? Absolutely nothing.
- Comment on Compact Rivian R3 EV Makes Surprise Debut With Awesome Hot Hatch Styling And Opening Rear Glass 2 months ago:
With a fast charger, owners will be able to get to 80 percent of battery life in just 30 minutes.
Well I don’t think I’ll want to kill 80% of my battery in half an hour.
- Comment on Looking for emotional game recommendations 2 months ago:
The game takes a while to warm up the plot. It picks up with the Baron quests, and the big emotional parts come out full steam towards the last third of the story.
If you manage to finish it, replay it with different choices. Some of the character reactions can be really endearing, others can be terribly heartbreaking.
Both expansions also have excellent stories, one with a Faustian plot, the other with dark stories in a fairy tale veneer.
I would suggest you try to make it as far as the botchling quest. If you still don’t care for it after that then I’ll concede that it’s not your style of game.
- Comment on Looking for emotional game recommendations 2 months ago:
The Witcher 3 has some really emotional scenes, and an immersive soundtrack.
- Comment on 2 months ago:
That’s like arguing that trickle down economics is efficient because the money eventually gets into the hands of the poor.
- Comment on Why do (desktop) PC have so few USB ports ? 2 months ago:
What’s annoying these days is how few USB-C port expanders there are. I get why - USB-C is supposed to be able to deliver a certain amount of power, and a hub can’t do that while staying compliant to the standard - but it means that I have to resort to switching back and forth between devices. It’s even worse with laptops that have only one USB-C port that also doubles as power delivery: can’t use a yubikey C while having the laptop plugged in!
- Comment on PEMDAS is technically correct, but morally wrong 2 months ago:
I loved my HP48GX calculator with RPN.
- Comment on When people talk about returning the cart after shopping, does that include putting it in a corral, or do you have to take it all the way to the front of the store to be a good person? 3 months ago:
Corral, but put it there properly, not all askew as it it was a bloody kitchen drawer.
- Comment on Impermanent NixOS: on a VM + tmpfs root + flakes + LUKS 3 months ago:
impermanent
Isn’t that called ephemeral these days?
- Comment on PSA: The Docker Snap package on Ubuntu sucks. 4 months ago:
The one thing snap does that flatpak doesn’t is provide CLI applications. But then nix also does that, so snap can go pound salt.