• 0 Posts
  • 32 Comments
Joined 1 year ago
cake
Cake day: June 17th, 2023

help-circle











  • Overall everyone will use less data when there’s a data cap, I found.

    My ISP implemented data caps back then too (thankfully it’s all removed now, but 60GB was really bonkers!) and I just find it fascinating how much traffic I generate nowadays, when I don’t have to care how much data I have left this month.

    Anyways, data caps shouldn’t be relevant anymore in 2023 when absolutely everything can handle gigabits and more. It’s interesting how American ISPs still implement them.


  • I sorta understand why data caps were implemented in the past. Some people hosted servers on their home connection, and their total internet traffic in a week would far exceed that of a normal user’s. Data caps were meant to force people to be conservative on their internet usage so this would not happen.

    But come on now, it’s 2023. If your internet infrastructure could not handle that amount of traffic, you are a laughing stock of ISPs.








  • Right. Packets still have to go through your router, assuming that your router has firewall turned on, it goes like this:

    1. Your router receives a packet.

    2. It checks whether the packet is “expected” (a “related” packet) - by using connection tracking.

      For example, if ComputerA had sent something to ServerX before, and now the packet received by router says “from ServerX to ComputerA”, then the packet is let through - surely, this packet is just a reply to ComputerA’s previous requests.

    3. If step 2 fails - we know this is a new incoming packet. Possibly it comes from an attacker, which we don’t want. And so the router checks whether there is a rule that allows such a packet to go through (the assumption is that since you are explicitly allowing it, you know how to secure yourself.)

      If I have setup a firewall rule that says “allow packets if their destination is ComputerB, TCP port 25565”, and the received packet matches this description, the router lets it through.

    4. Finally, the packets that the router accepts from the previous steps are forwarded to the relevant LAN hosts.