• 7 Posts
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Joined 2 years ago
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Cake day: June 2nd, 2023

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  • Dave@lemmy.nztoLemmy Shitpost@lemmy.worldpope
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    1 hour ago

    There’s a whole Wikipedia page about it. But here is the important bit:

    In the past, caller ID spoofing required an advanced knowledge of telephony equipment that could be quite expensive. However, with open source software (such as Asterisk or FreeSWITCH, and almost any VoIP company), one can spoof calls with minimal costs and effort.

    Some VoIP providers allow the user to configure their displayed number as part of the configuration page on the provider’s web interface. No additional software is required.

    So it’s pretty trivial these days because the phone number coming from the phone network doesn’t help when the phone network lets you set whatever you like.






  • I’m not sure what others see as the context of the meme, but in my experience it’s normally when you are fiddling with it, but you never expect it to be the problem because it seems so simple.

    There are many reasons you might need to fiddle with is. The most obvious is when you move your server to a new computer, it might get a new IP address. But your browser might cache the old address. Your computer might cache it. Your DNS server might cache it (like the rest of the internet, there is not one big DNS server but many smaller ones - most non-technical people would be using one provided by their internet provider). It might not be working and you presume it’s a problem with the new server but actually it’s the DNS.

    But also DNS as a system is also used for things that are not directly related to looking up a domain name. For example, when sending an email, there are many checks on the receiving side to ensure that the email is actually coming from somewhere that is allowed to send an email from that domain name. I can send an email to you from bill@microsoft.com, but it would go straight to spam because it would fail those checks. DNS records are used to authorise servers that can send email on behalf of that domain. And just generally DNS is used for proving domain ownership (for example, it’s one method to get a certificate from Let’s Encrypt to allow secure connections to your website).


  • When you access something on the internet, you are accessing something on someone else’s computer.

    Computers have (effectively) postal addresses. When you want to access content on another computer, you type in its address.

    But computer addresses don’t look like “fedia.io” they look like “123.122.1.111”.

    When you type “fedia.io” your computer needs to go and ask what the computer’s address is.

    That’s DNS. The Domain Name System. The system for finding the computer address from a domain name.

    The above is very simplified and doesn’t cover all scenarios, but I hope it’s enough to get the idea.




  • Dave@lemmy.nztoLemmy Shitpost@lemmy.worldNice try
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    19 days ago

    Is it true or just a stereotype? My kids love fruit. We go through probably 6kg of fruit a week, half of that is bananas and the rest is a mix of all sorts.

    They obviously love candy too but they don’t complain about fruit.

    Vegetables on the other hand… Fiber without (much) sugar is offensive.