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Shameless plug but I was also interested in the magic behind these mesh networking tools, so I wrote my own toy version that was very much inspired by the tools you mentioned. I blogged about it here: https://www.samlewis.me/2021/07/creating-mesh-vpn-tool-for-f...

The short answer to your question though is that the packets are sent over a secure tunnel.


Shameless self-promotion but there's also this post I wrote in 2017 if anyone interested in a slightly different take (but a very similar write up to the OP): https://www.samlewis.me/2017/06/a-peek-under-bitcoins-hood/

Cool that this article implements the cryptography primitives, though!

e: Funnily, like the article, I also stored some BTC in a wallet and challenged people to (manually) take/steal it. At the time it was worth $10 USD.. now it's worth $123 USD!


Really awesome, how long did it take you to put together?


About 2 years. I did a similar site for Apollo 17 before this one (Apollo17.org), which took 6 years. This time I knew what I was doing and could just do it.


Last time I tried this, I found a lot of corporate spam filters seemed to (silently) drop my emails, so I went back to using GMail out of frustration.

Is there anything you do that helps with this? I was using GApps and I don't think my domain name was too spammy (samlewis.me).


Huh, I haven't had that problem in about 7 years of using a custom domain name. Maybe the distinction is that mine is a .com? I feel like enough businesses themselves use custom domain names that dropping unknown .coms would break a ton of legitimate B2B traffic, but perhaps .me less so.

How did you notice this?


I use a .me domain myself but I haven't had any spam problems. Although I share it very very sparingly and have a catchall on another domain that I use for signing up with any service / sharing with non-trusted contacts. Even there, the spam problem isn't bothersome.


Make sure you setup SPF/DKIM/DMARC and you should be fine 99% of the time.

- Disclosure, I work for dmarcian


Which FastMail does if you have them host your DNS!


Fast mail will host your DNS? Had not seen that...


Don't use any of the "unsual" TLDs, like .io, .me, .toys, etc.


Surprisingly difficult for a personal-professional email if you have a somewhat common name. Nearly everything under the main TLDs was bought up ages ago. The issue can be mitigated with some creative branding work, but that’s arguably not any easier.


I've used .io and other "unusual" TLDs for a while and never had an email bounce or flagged as spam.

As someone else pointed out, make sure you setup spf, dkim, and all the other jazz. Some providers will host and setup the dns for you but its always best to use your own dns provider as the records are relatively easy to setup.


I haven't had any issues with my personal domain in years, ever since I moved it from random web host to GApps, to deal with IP reputation issues, and have SPF+DKIM setup. (but my domain is a .net one)


Did you manage to configure SPF correctly in your DNS records?


Seems like a very appropriate use of technology to me?

If they can get "good enough" results using Linux and running with technologies that the average developer is more likely to know, is it worth the investment in running a RTOS? Especially given running a RTOS will make any higher level app integration more difficult?

The benefit of running with Linux outweighs the risk of "lettuce on the floor", imo. Yes, there's probably overhead in terms of clock cycles, but there's also probably dramatically less overhead in terms of developer resources.. and when you're running off commodity hardware you can guess which overhead will cost more!


It would also be 'cheaper' to build a bridge using lego....

Correctness of the solution is important, otherwise we're just playing at being engineers.


To quote you:

> At some point, you will realise that your job is not to create an idol to the software-engineering gods but rather to have a working product.

> Does this product work? if so, its doing its job.

https://news.ycombinator.com/item?id=17824782


Asking out of mostly ignorance, but is Qt still relevant in 2018?

I've noticed that even for standalone graphical applications, it's becoming more and more common to use webapps - either served locally and accessed through a browser, or through something like electron.


Depends on the app. I run some things in the browser but if there is a native app for something, it's always more responsive and faster to use.

Qt is very fast and very cross platform and Qt 5 together with Python is coming in a new form:

https://www.qt.io/qt-for-python


Lots of people loathe this trend, so yes, I'd say, anything but web apps packaged as platform apps are relevant.


http://jrnl.sh/ is nice

The low amount effort to add an entry allows me to jot down thoughts, conversations etc easily which makes me actually do it.

Having it save as a plain .txt file is nice for versioning/backup as well.


That was a really fun to read, well written piece.

Definitely makes me interested in trying something like this - does anyone know of any other games that have similar economy aspects?


Eve Online. If you dare - it's a commitment. See some discussion in this thread https://news.ycombinator.com/item?id=16027146


Spreadsheets in space.



Am I missing something or is the next step going to be Intel making ME impossible to remove without bricking your CPU? If so, seems like these efforts are fairly futile if they'll only work for the current gen of processors.


It is already impossible to remove the ME. If one does, then the system either doesn't boot at all or reboots after 30 minutes. All you can do is to apparently cripple it on some models.


If you're a large enterprise, paying an extra $20/month could definitely be worth not having the pain & cost of having your employees having to manage paying an extra bill each month.


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