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Cake day: December 6th, 2024

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  • A Finance company which has its production systems in the same network as worker computers which aren’t locked-down tight is basically amateur hour every hour of the day every day of the month every month of the year.

    You can never assume that workers won’t do stupid shit like downloading random software into their work computers even when its a fuckingly obvious bad idea for most people to do such stupid shit - it only takes one idiot, naive fool or even momentary distraction of somebody who should’ve known better, si always treat such devices as contaminated.


  • Well, a network mask is by definition always a sequence of 1s followed by 0s (in other words, you can’t arbitrarilly have some bits be 0 in between bits which are 1), so that /24 in CIDR notation is literally “/” + the number of bits in the network mask which have the value 1.

    In other words, because of that “sequence of 1s followed by 0s” rule both 255.255.255.0 and /24 are just two different descriptions of the same network mask, first as 4 decimal numbers separated by dots, whilst the second as the count of bits in the binary representation of the mask which have the value 1.

    For example, the 255.255.252.0 network mask from my first example in my last post could also be represented by /22 since the mask has 8+8+6 = 22 bits with value 1 and the rest are 0 - 192.168.0.0/22 means the same as 192.168.0.0/255.255.252.0

    There is no point in having both that part of the CIDR representation and the decimal mask representation at the same time because they’re both different representations of the same thing so having both is redundant.




  • Intel actually went and created a line of low power CPUs to compete with ARM (though their consumption is still twice as much) such as the N100, so you can get quite a bit of CPU power in a modern CPU (so, with hardware video decoding and encoding for all modern codecs).

    Also with the transition from HDD to SDD, the power consumption in that side when merelly reading data (which is what’s needed to seed a few hundred torrents) is way lower.

    I actually have a Mini-PC with an N100 that’s a TV Media Player, torrent server with an always on VPN (also another nice thing in modern CPUs - the crypto functions implemented in hardware), NAS and home server for a few more things at that tends to run at less than 20% load and uses very little power.

    I don’t think the mainstream desktop CPUs, even the notebook ones, are quite as power efficient as those things, and if you add a dedicated graphics card, it’s even worse.

    Before the current mempocalypse it was actually cheaper in the mid and long term to just buy a brand new Mini-PC with an N100 (mine was €130) to use as an always ON homesever than use an old desktop, purelly because of the massive power savings.




  • Generally “criticizing anybody that does anything” - which is the easiest thing imaginable because nobody is perfect so there are always imperfections to criticize in their work hence any idiot can criticize the work of others - is the entirety of Far-Right politics and if and when they get any power they fuck things up since they have no clue how to actually do anything properly.

    The Far-Right aren’t makers, aren’t builders, they specialize in criticizing makers and builders, with the only kind of “doing” they’re good at being destroying the work of others.

    This applies everywhere, not just the US.




  • If a bit in those 4 bytes is 1 that means that the same bit in the IP address is part of what defines the network whilst the bits that are 0 are bits that can change in the IP address and that machine will still be part of that sub-network.

    So a mask of 255.255.252.0 (notice the 3rd byte) on a network with a prefix 192.168.0.0 means that 192.168.0.20 is in that sub-network AND 192.168.2.20 is part of that sub-network too, because the two lowest bits of the 3rd byte in that mask are 0, meaning that IP address where those bits vary are still in the same sub-network (i.e. the ranges 192.168.0.XXX, 192.168.1.XXX, 192.168.2.XXX and 192.168.3.XXX are all in the same sub-network).

    If instead the sub-network prefix was the same 192.168.0.0 but with a mask of 255.255.255.0 (the most common case you find in home internal networks) then 192.168.2.20 would NOT be part of the same sub-network as 192.168.0.20

    You probably also see now why a network mask is needed alongside the network prefix - in both examples above 192.168.0.0 is the network prefix, but without the network mask you don’t know which 0 bits in that network code can be changed to make an IP address still in the same sub-network.

    Note that you can change the mask to make the sub-network smaller as well as to make them bigger: for example 192.168.0.0/255.255.255.223 is a perfectly valid subnetwork that fits 30 machines.

    See chronicledmonocle@lemmy.world 's post for a full explanation.



  • That position is the product of one’s “I’ll do this quickly” whishful thinking.

    With experience you start figuring out when something isn’t going to be quick as you look into it, at which point you get a chair.

    With even more experience you start training other people to solve their own problems before they come to you with stupid shit they could have solved themselves, as well as designing your own shit that’s meant to be used by others to avoid things like “magical sequences” (you have to call X, then Y, before you can do Z), properly handle common mistakes with good error messages that in some cases even tell people how to solve it and other such features to make it less likely for there to be usage errors and handle them elegantly when they happen in order to reduce the support load on you.



  • Yeah, the trick was only with the NASDAQ 100 as the SP500 ended up saying no to changing their index rules to allow inclusion of SpaceX stock so shortly after IPO.

    The point however does stand for people whose pension and index funds are invested in or follow the NASDAQ 100 index as what was predict would happen to the value of those shares after IPO (and the reason why the indice before did not include stock so shortly after IPO) happened: the price spiked immediatelly after IPO just as the funds tracking the indice were forced to buy that stock, quickly collapsed afterwards and is still now below even IPO price (and well below the post IPO price spike).






  • Aceticon@lemmy.dbzer0.comtoPolitical Memes@lemmy.world•Eat the rich already
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    2 days ago

    I don’t think “eat melon rinds because they have fiber” is quite the culinary education you seem to think it is.

    I’m from Portugal, known for the Mediterranean Diet, and from what I see here compared to living in countries like Britain, culinary education is not about using the unpleasant parts of veggies for their fiber, it’s using fresh veggies in the first place.

    That’s the problem I saw with the poor in Britain - they’ll eat lots of cheap carbs and not enough vegetables.

    Using the unpleasant parts of the veggies for fiber (which is not a nutrient as the human body cannot break it up or absorb it, it’s just filling and keeps your digestive system clean) is just poverty.

    This article is definitelly not about teaching people to eat the right things.