How can there be a baseline check when you operate by getting the most inexperienced cheapest person possible to do the work?

Especially these days there’s really no excuse

Add a skill to your repo that does some basic checks at least, not that hard

The DoWD owns such a large chunk of the IP space, it can very easily be a coincidence

> Note to self: never buy a Korean security product.

The Canadian Navy very recently made a major choice and agreed with you

https://www.google.com/search?client=firefox-b-d&q=hanwha+oc...

As they say: in IoT the S stands for security.

There’s some irony to security not being a priority for security cameras. Different kind of security I know, but still.

I do know of at least one company who has black-holed the entire DoD ip space and are using it for internal space, which is why I gave a speculation warning... it's really strange regardless.

Thank you. Ordered one to play around and see if this is a viable alternative.

will fix it tomorrow

You can get close.... I guess...

Some cameras do support thingino, so you can override their firmware. Then there's this: https://openipc.org/supported-hardware/featured

No, if you read the article the author was downloading firmware from their website and still found the token.

I wish... The best I've found is https://openipc.org/ which is a very manufacturer unsupported way of reflashing certain chips with open-source firmware. It seems very fiddly as only certain SoCs are supported and good luck finding out if a specific Chinese camera has one.

Not exactly open firmware, but something like ONVIF on an isolated network is pretty close. An ONVIF camera should talk to basically any NVR (network video recorder), there are several open-source ones available.

There are tons of ONVIF-compliant and cheap PoE cameras, and with this setup you really don't care about the security of the manufacturer firmware since you aren't exposing them to the network publicly. However, you do need to be extra diligent when configuring your VLAN/network segmentation.

Not exactly what you have asked for, but ESP32 based M5Stack and Seeed Xiao modules might fit the bill. They are not so expensive, are Linux-free, and there's no report so far of secret ping home features in the SDK.

I wrote Wyrecam (https://github.com/radredgreen/wyrecam) to solve this problem. It works as well as Apple HomeKit works, which isn't all that well. Firmware supports wyze v3 (ingenic t31).

how did "same MAC" lead to "access to everything"?

Was the website's security based on MAC, which presumably is supplied by the client? If so, I guess.. typical IoT.

There is also https://thingino.com/ which has a clear set of supported cameras. The installation is straight forward if you choose a cam with SD-Card flashing support. I upgraded two of the Sonoff Slim Gen2 without any issues.

ESP32-CAM

The CSS selector they used (`a[href*="://"]::after`) is meant to only target only external links, but assumes any internal links will be using relative paths like `href="/about"`. The problem is that this site uses absolute URLs (`href="https://hhh.hn/about"`) for its nav links, so every link ends up with an icon.

You could fix this by adding an exception to the CSS rule so it skips links starting with your site's name:

  a[href*="://"]:not([href^="https://hhh.hn"])::after

Seems like the shop is broken?

> Stránka nenalezena

> There's been a glitch...

> We're not quite sure what went wrong. You can go back, or try looking on our homepage.

> Department of War

n.b., it's the Department of Defense, just like the Kennedy Center doesn't have Trump's name attached, and the large body of water by Texas is the Gulf of Mexico.

As if domestic products aren't a hot mess of security issues and sloppy engineering. Lol

Or Korean IoT products. The ones I was working on had insane approach to security.

Oh I thought exactly the opposite!

I feel like every security blog (or even just tech blog) I've read recently has had paragraphs and paragraphs of largely LLM generated explainer waffle. This felt refreshingly focused and to the point.

Seemed perfectly reasonable to me. Not everything has to be written for a target audience that includes you, besides you were able to look up what you needed it seems. Another tactic is to feed the article to your favorite LLM and interrogate it about what you don't understand.

just buy stuff you can put your own firmware/os on because it's either just the worst security in the world (aka anything not from china) or, well... china.

and while i currently don't hate china as much as i do US rn (because canadian; sorry) i can also say -- due to being an aforementioned leaflandian -- that due to very personal experience i have zero faith in anything from china that has the ability to connect to any type of network :')

And so yeah at this point if I can't at the very least get a whatever-wrt firmware (preferably a proper linux distro nowadays; not to say the *-wrt firmwares aren't a real OS but, y'know) on the device i just avoid them entirely since, well... it's all i can do at this point because even if there were baked in hardware-based backdoors i as an individual can't do much more than that.

Note to self: never buy any Korean hardware or software product.

/S

ID-IoT-S

Interesting -- seems like the side effect would be to basically prevent use by the DoD but not really anyone else. Bonus points if they sell a "government" version for higher cost

There's also some irony in people happily ignoring that so many of these products live-stream the inside view of their homes and offices to some foreign corporate cloud - and in the case of suspiciously many Chinese security cameras, a state-backed corporation's cloud. Because, wow, it really is convenient.

Yeah I wanted to do that at previous company. Got talked out of it, but it's nice have all those ips available.

This will trip up most SOC workflows in funny ways, and I like it.

IPs having a global distinction between public/private is a convention, but local routing can widely differ.

Same with the "China Cyberattacks" - the guys sitting on top of my outgoing fiber can simulate any IP address they want to me.

I also know of a company who does this. The reason in their case is they act as a network concentrator, bridging hundreds of client IP spaces, so this helps them avoid conflicts with their own space without having to NAT constantly. There is still a lot of NAT for the more common ranges.

I used to work somewhere that did that. Several of us in Eng pointed out that it was likely impossible to sell anything to DoD personnel since the reply would route internally. But I don't know if it was _fixed_, was still an issue when I left.

I recently troubleshot an installation for someone where at some point in the past they'd picked 1.1.1.0/24 as their address range because "all that 192 stuff was silly and too complicated".

You know, I'm not sure I can explain how I feel about this properly without waving the shotgun around.

there's a couple subnets I (ab)use in the DOD IP space for my home network knowing they'd never put them on the open internet. it's also fun to throw logging for a loop if someone digs.

22.0.0.0/8 - it's basically free real estate!

Ugh, that's a new low. I can't think of a single good reason a lighting app would need shopify api access.

That said, I've done some consulting work on shopify stores, and I wouldn't be shocked at all to see something like that at all. The bar for code quality that a lot of low end consultants/designers deliver is just abysmal.

I so want these to be a viable solution but man my experience so far is that it can barely be made to work and only in the most favorable environments. Compare that to the blink cameras I used to run outside where it occasionally went below -20F and they still went over a year on a couple batteries.

I also use thingino and it was very easy to use. It has wireguard support, but I just set up my firewall so cams are only accessible over tailscale.

Czech for 'page not found'

How does this even work? A website doesn't know your MAC, that is only known in your local network.

Huh, it was working an hour ago. The outdoor 8MP variant was around the 85 euro mark.

rel="external" solves this.

Who hurt you? It's his own blog. Let him write the way he wants.

i’m not a mastermind, and I agree it could be more accessible. I treat this blog as somewhere to just dump my thoughts as unfiltered as I can while still being useful or entertaining, maybe for some other posts I will go more into depth

There's a lot of public keys that don't give you any special access, unless the dev is really bad.

Anyone who cares about security will be using App Attest or the Google store equivalent.

Another rule of thumb - i know it's not always the best since some products are really nice aesthetically - is to buy only local smart stuff, for example, zigbee/zwave.

Have you actually tried to do anything with them though? The keys are in there, but may not grant you any real extra access beyond what your user is actually allowed to do via the app.

Abusing IP ranges which were assigned to an organization but aren't actually used on the public Internet as private addresses is pretty common. Sure, it's bad practice, but not a big deal.

buy any dongle that sells for under $100 on amazon. they all have the same mac, and come with 'bespoke' apps to let you do things to your car. those apps are all thin wrappers on code widely shared; they use the MAC of the dongle as the keystone for ID.

Short story: buy one cheap dongle on Amazon, dump the MAC (00:11:22:AA:BB:CC IIRC; it's been 15 years since I cared) and you have auth to all of the apps everywhere.

Reminder: the Bluetooth logo comes, mostly, from self-certification.

Everything can be controlled without a proprietary app. Hope you reverse engineer the protocol and publish how to do it.

In many cases it is bad to publish this info because they might come after you. There used to be a company who shielded the “researcher” from the legal consequences, can’t remember the name though.

And it's worth considering that obfuscation only ever worked against casuals for whom tedious was a bridge too far. Nation state actors and criminal hacker groups, on the other hand, consider the tedious entirely worth it.

On the bright side, even a small local LLM can easily improve garbage code like that.

That sounds horrible. I got an old PI4, would it make for a decent router, if at all possible?

Note to self, never buy any hardware product, move to a yurt in the woods, start an alpaca ranch, write a manifesto

Which is exactly why alll my cameras live in their own VLAN with no internet access, regardless of how trustworthy the company may be. Better safe than sorry and all that.

It’s only a convention in the sense that the IANA is a convention: https://www.iana.org/assignments/iana-ipv4-special-registry/...

192.0.0.0/24, 10/8, 172.16/12, and various other subslices of 192/8 are reserved for local use and are not publicly routable.

Sounds like someones on the path to sovereign citizenship. I can't wait for our cyber-sovereign citizenships who deny various IP ranges coming from the government's domain naming system.

If they converted to IPv6, they could easily have a globally unique address space. Real globally unique, not probabilistic.

LOL, they should have just used a 10.x space instead if they wanted slightly simpler numbers.

On the shotgun, or adjacent, I do tend to prefer ammo classes for my nets... 10.22.x.y, where x may be 1, 38, 45, etc. Allows for site to site vpn with friends/family a bit easier to remember.

I also do this, except 7.0.0.0/8 instead. Its great for not conflicting with hotel wifi dhcp.

The CGNAT space (100.64.0.0/10) is also free real estate for container virtual/overlay networks when you don't want to (or can't, thanks to IT) use the RFC-1918 subnets.

I have seen ISP doing CGNAT on DOD IP space.

the entirety of 10/8 and 172.16/12 and 192.168/16 wasn't large enough for your house?

Didn't AT&T do that and Cloudflare made them change it when they aquired that space?

Yet another thing ipv6 solves. Yeah you can do the officially supported fdXX:XXXX:XXXX:... but you can also just pick something like 1::1 and it's unlikely to conflict with the current global range.

If you're gonna do that, though, it's better if you use fd00:... or one of the other assigned ranges so it's still in the standard range. OSes use this as a heuristic for source address selection.

I had a gig for a contractor of some banks once. One of the banks was using 5.0.0.0/8 internally. I asked the guy if it doesn't lead to issues. All the time, he said. When they first came in, they just assigned each bank 1.0.0.0/8, 2.0.0.0/8, and so on. Number ten feels really lucky, he said.

> Anyone who cares about security will be using App Attest or the Google store equivalent.

Why? I rarely have security objectives where remote attention would help, and it has a huge impact on user freedom. For B2C attestation is just an evil captcha.

>Anyone who cares about security

I have something hilarious to tell you about IoT apps

I live by this rule*. Being able to pick up stuff from IKEA that's well supported, well designed and really affordable is a huge advantage.

*almost, I have two things that need an app. My Vaillant boiler and my Yale alarm system. Both apps are terrible, but I have a 10 year warranty on the boiler and my alarm is up to scratch from a home insurance point of view.**

Why do the apps need auth?

I'm 100% confident in hardware companies' ability to make infinitely incompetent software given infinitely smart agents. They do it because they don't care about software, not because they lack tools. No agent can turn them into software companies if they don't want it themselves.

> consider the tedious entirely worth it.

Entirely without LLMs, I'm imagining an office of North Korean compsci graduates doing astonishingly tedious tasks, for whom an office job on a basic Linux computer and slightly better diet and nice apartment put them in the top 1-2% of living standard in the country.

Oldie, bur relevant.

Tech enthusiasts: My entire house is smart.

Tech workers: The only piece of technology in my house is a printer and I keep a gun next to it so I can shoot it if it makes a noise I don’t recognize

@stake or L0pht?

I bought 3 from 3 different vendors and they all have totally different Mac addresses.

Internally they're all Bluetooth to serial chips, and another pic16xxxx chip which does serial to canbus.

I guess the Bluetooth serial chips probably have programmable Mac addresses, but equally they normally ship with a globally default one unless you flash a different one onto it.

It is still pretty nice, you don't have to install yet another app to do something. People did this with Mazda app as it allowed them to start the car without subscription. They 'fixed' it.

It's not quite ideal hardware due to only having a single NIC, but you can slap a USB NIC on it and make it work, if that's what's handy.

Old thin clients are typically in the same hardware class, and probably cheaper by the time you add the exploding MSRP of a Pi, and a PSU, and a case and heatsink, and maybe some storage that doesn't suck ass. But if you already own the Pi, yeah, go for it.

Pirates checked Denuvo, once considered the king of DRM.

Of course this looks entirely different when your corporate superstructure has a long and active history of developing military equipment.

Or claude/codex can.

Amazing! I have the same MAC address on my luggage!

Yes, obfuscation was always a matter of cost: how much money do you need to break the protection? LLM just decreased that amount by a lot.

(Yes ok, RSA4096 is technically a matter of cost, you just need an infinite amount of money)

The fact that the network concentrator co uses DoD v4 address space to avoid conflicts implies that their clients are bringing v4 addresses, so IPv6 is utterly irrelevant in this situation.

I work for a large organisation that has various blocks scattered around 10./8, some with highish values for the second octet and some with lowish values, so say 10.129.0.x/24 and 10.3.0.x/24 to pick just two out of a couple of thousand.

But one of our vendor networks uses 10.32.x.x/32 for various radio gateways, and the radios themselves all locally expose (this is where I give away too big a clue as to what I do) 10.0.0.101 as a management address that emits important link status data.

So you can imagine what a godawful bùrach everyone's routing tables are.

As long as it's strictly separated from the internet it works. The Internetwork Packet Exchange, used for cellular roaming, is a parallel global internet with its own addresses and allocation policies.

This story is so silly it must be true. Thank you, made me laugh out loud.

>the entirety of 10/8 and 172.16/12 and 192.168/16 wasn't large enough for your house?

Just to chime in agreeing with sibling comments, the issue is when it's not about just your house and you're deep into self-hosted stuff with a lot of different properties and businesses other people's houses all sharing resources. Without a lot of coordination and consideration, which in practice doesn't really happen easily given the adhoc nature such things tend to organically develop out of, and all the random stuff that wants specific addresses at least for setup, it actually gets pretty easy to run into collisions. Allocations typically are definitely inefficient in many respects but also made sense in the context they were first done and of course can be a certain amount of effort to change.

In an ideal world I sorta feel like "IPv6" should have been more along the lines of <12 octet prefix>:<IPv4>, everyone gets a prefix or set of prefixes that they actually own and are consistent worldwide, or at least only change when geographic location changes, and then can just have the entire 32-bit IPv4 space for LAN however they want. Then you only have to care about prefix between LANs and it could all be extremely automated, internally you only need to use something that looks like IPv4 with the network hardware transparently able to handle prefixes for WAN. Backwards compatibility story would be a lot more straight forward too. Oh well.

@kotaKat: that's a great idea and I don't know why I forgot I played with that like 15 years ago. Really handy as a backup space that almost certainly won't collide with any commercial hardware at least.

Funny enough their problems really began in earnest about seven or eight years ago...

I dunno, seems like it could be a bit vague. Does 45 refer to 45 Webley or 45 GAP? Could possibly also refer to 45 Colt I guess, if you're boring. But 45 Colt, 45 ACP, 45 Colt Government?

Also, just in case this comment isn't pedantic enough, 10.22 would be a firearm range, not an ammo range. And AFAIK they only ever chambered that for .22 rimfire cartridges. ;)

Most of these companies try to penny pinch and give task to hardware engineer. As a result there are lot of security issues with IOT devices.

I got a "home" Verizon box, and the first thing I did was change the DNS setting... 1.1.1.1 wasn't working, and I wanted to change it back to default. Verizon's tech support are idiots... they literally wouldn't give me the default DNS IP because they were concerned about security.

Google's DNS worked fine, but Cloudflare's didn't. No idea if they ever fixed it... I'm using it as a backup for my main connection, eventually I'll setup autofailover on my router (OpnSense). For now, I just swap the cables.

> Yet another thing ipv6 solves. ... it's unlikely to conflict with the current global range

I'm not familiar with IPv6's details, could you elaborate on this? To me, this reads like you're saying that IPv6 solves the problem by having low adoption rates rather than an actual function of the protocol.

i deal with a lot of nerds that are all interconnected with one another and nobody can agree on a common subnet for their houses when we all decide to exchange routes internally. ;)

Yale alarm? Can you link?

Vailant boiler - I wonder if there's a debug interface you can use. Not knowing specifics of your model, i foudn this: https://github.com/jayme-github/esphome_vaillant

Codex can help probably further heh.

"all that 192 stuff was silly and too complicated... but this fd00: stuff is easy peasy!"

The "S" in IoT stands for security!

A Venn diagram like a 6th grade boy's graffiti of boobs.

Remind me to rotate my GitHub tokens.

00:11:22:33:44:55

All security is always a matter of cost. Clown theater starts once you lose track of it, and start doing security for security's sake.

RE obfuscation and nation states - nation states have finite budgets too, both in terms of resources and attention. They can crack any system at any time, but they can't afford to crack all of the systems all of the time.

I made things easier by setting the permission action link on all my nuclear weapons to zero

https://www.google.com/search?client=firefox-b-d&q=permissio...

The cool thing about cryptographic security is that it's an asymmetric amount of cost for both parties - to encode is cheap, to break is many orders of magnitude harder, unlike obfuscation where the difficulty is approximately symmetrical.

Quantenna used 1.1.1.1 for RPC to their wifi chip in their SDK by default. Should not have been exposed to global routing but of course people screwed that up.

https://medium.com/@mrtcve/atts-misuse-of-cloudflare-dns-ip-...

Or they didn't want you to know the IP(s) so you could easily block it

Sounds like they blocked Cloudflare but couldn't block Google

My ISP won't give me the router credentials because they claim that that would somehow risk their network interconnectivity or something. I have no idea how this makes any sense since a router (shouldn't) give me that level of access, but maybe I'm missing something?

It's a Yale Sync

https://yalehome.co.uk/yale-sync-hub

It's not really something I want 'home rolled', I just want it to work.

Same goes for the boiler really. If it stops working I can phone Valliant and they'll send someone round to fix it.

I deal with a lot of nerds, but starting in about 2008 we all segmented up the 10.x space and each of us has a /16, with each site we manage having typically a /24 or /22, so nobody overlaps. We can light up tunnels between each other and never have a collision. We have a little internal registry on a private wiki, and it's been serving us well for... oh dear, almost two decades now.

Crucially, we set aside the common 10.1 and 10.10 ranges as nonroutable, so any devices that default into those have to be dealt with before they can live on the wider network.

Newcomers get handed a block and have to renumber, or NAT into it, or whatever, but they cannot emit bogons. At a small scale (first-name basis), this works.

Agreed 100%! I know there's tough challenges to making this reality, but if https://serverspace.io/about/blog/ipv8-explained-what-we-kno... could be an IRL thing, I would buy company network equipment and use computer OSes that supported this draft standard.

It's a much better compromise and ergonomics to migrate from IPv4 to an IPv4 respecting successor, where IPv6 is just the academic snobbery and utterly alien mental model for not-enough benefits.

For the same reason Unix stuck around and beat up its own successor Plan 9/inferno. That inertia even decades later is the same reason IPv4 still beats IPv6.

IPv8 is more of a linux to unix than a plan 9.

you can use 1234 if you want, that's also unused space

Just as a pedantic aside, people often use Venn diagram when they mean Euler diagram. A Venn diagram always has the overlapping circles and use shading or labeling describe the set relation. Euler diagrams let the circles describe the relation so two non intersecting sets in a Venn diagram might share the left circle green, the right blue and leave the intersection blank or grey. An Euler diagram will have two disjoint circles.

Respectfully I don't think they explained it well.

fc00::/7 is for "Unique Local Addresses". Basically, private, non-globally-routable addresses from which you can freely pick space. Kind of like RFC1918. It's deliberately huge and you should only use as much from it as you need. The idea being that if you merge with another organization or connect to them via VPN, it's unlikely your addresses will collide like with RFC 1918.

There's even a website (sites?) to register your ULA space on a volunteer basis to reduce collision chances.

The argument is that IPv6 addresses are UUIDs and any random block is unlikely to collide with any other random address.

It's not about low adoption, it's that there are unimaginably many IPv6 addresses.

...which is a major reason for why it has low adoption

That one made me giggle!

192.168.0.0/24 -> fd00:0::/64

192.168.1.0/24 -> fd00:1::/64

192.168.2.0/24 -> fd00:2::/64

192.168.240.0/24 -> fd00:240::/64

It's not a great idea, but its no harder.

No need to mess around with setting up DHCP, remembering if your router is top or bottom of the subnet, and if you want 500 devices on a single subnet that's no problem.

Now if you still need ipv4 then yes, ipv6 is stupid as you have double the pain for none of the gain, but if you are ip6 only then its far easier.

All global IPv6 addresses start with 2. This is by design. Pedantically, 3 is also reserved for global. Some other prefixes are also reserved, like fd for the ULA (local) range.

The point of IPv6 was to make the addresses so long they are easy to manage.

If the router is also the modem, it can have diagnostic stuff that could (I am careful to point out: theoretically) cause them a big support headache in one way or another.

Also, I had a DSL modem back in the day with its own terrible NAT built-in. I managed to log in (I may have been given the admin password from a friend who worked at the ISP, allegedly) and once I put it into bridge mode, I was able to acquire multiple public IPv4 addresses via DHCP.

A. I love a pedantic aside

B. I love that Euler is pronounced “oiler” which is North American slang for a drunk. I’ve been trying to find that constant my whole adult life.

If you can't remember 192.168 you definitely can't remember a randomly picked ULA. So just use fd00. It's not any worse than 192.168.

>The point of IPv6 was to make the addresses so long they are easy to manage.

lol, there is no doubt that had a massive opposite effect. To the point of nearly killing it in terms of willingness to adopt.

I doubt any endpoints are entirely ipv6.

So it seems like it helps ISPs and large networks router… but they never had problems with address space running out at the high levels and almost all likely need to support v4 anyhow.

I think it’s been long enough to be honest that ipv6 was a spectacular failure by complicating an already complicated system into something no one actually asked for.

No human said “hey, networking sucks. Please make it much harder at my level!!”.

One thing I don't appreciate... Is the nature of NAT protected my internal/home network before... now, I have to actually configure firewall settings etc. to protect IPv6 issued addresses internally.

I know you can just block inbound non-established connections, but it feels like an extra step and complexity. Not to mention, that I really don't understand how IPs are supposed to be provisioned to devices on IPv6. Is there like a 50-100 page book you can recommend "for dummies" on IPv6, that hopefully contains at least a tiny amount of how to configure a common router and/or linux host.

Thanks for the reply. I'm reminded every now and then of the magnitude of the address space in v6. Then I do nothing with that information and slowly lose appreciation for the size again :)

The point of IPv6 was to make the addresses so long that we don't run out of them in 20 years or so.

There fixed that for you.

True, I was thinking more about the allocation discussion than the "easy to remember".

Anyone in IT who allocates 1.1.1.0/24 because 192.168.0.0/24 is hard, should be allocated to trash pickup.

> I doubt any endpoints are entirely ipv6.

Lte and 5G can be v6 only, usually they also have NAT64 and DNS64 so you can get everywhere, but the less stuff that needs v4, the smaller their nat boxes are.

I'm largely with you... I would think they'd take the IPv4 block and have a direct/virtual block that just extends it to more addresses... so it could be an IPv4 NAT or IPv6 direct.

like 1.1.1.1/192.168.45.4 ... for a router that understands IPv6, that's the direct route to the sub-network, otherwise it will have to use IPv4, and the subnet route is treated as NAT and otherwise isolated.

To me, that would make more sense... then internal IPv6 might be practically limited to 10. and 102.168. in the nearer term, but adoption would be MUCH simpler in practice, and distribution would mostly already be established, however unfairly, but can then be broken into single addresses and vNext adoption could be that much quicker as a result of piggybacking.

How many /24s does your organisation have? With IPv6, one block is almost always sufficient.

I know that on my hosted server, I never bothered to set it up, because I didn't know how to properly configure or sub-net it. I know it's skill issue, but really feels significantly more complicated and even harder to understand than NAT even.

Not to mention, at home, most of the ads I do see (PiHole) are IPv6 addresses.

The problem is NAT solved the same problem more easily and cheaply. It was at the cost of making it difficult for every host to talk directly to every other host, but it turned out most of the people building networks didn't want that feature anyway.

We already ran out of ipv4 about 15 years AGO.

64 bits would be enough to avoid run out, but hierarchical allocation would still be a problem. 128 bits is long enough for many levels of hierarchy. (And yes, you can subnet all the bits, not just the first 64)

> Not to mention, that I really don't understand how IPs are supposed to be provisioned to devices on IPv6.

SLAAC is the only way that works across all IPV6 devices. In that mode, the router advertises the prefix and the device assigns its own address (prefix + its mac address).

DHCPv6 exists but is poorly supported. It sucks for people who like assigning IPs individually from an authoritative place (through static dhcp entries on the router). But people like us are "doing it wrong", you see? We must accept that in this brave new worlds an IP means nothing.

>limited to 10. and 102.168

I assume you meant 10.x.x.x and 192.168.x.x -- (and 172.16.x.x?), ie the standard subnets for home router-modems (which are non-routing and so can't be used on the internet).

It's mental that my fairly techy-orientated but otherwise pretty standard UK ISP provides me with a /48 as default.

So I have 1.2 million million million million IPv6 addresses available.

That ought to be enough, eh?

And there's always static configuration, useful for servers.

Which doubly sucks in terms of assigning a DNS name to an IP/PC... and/or opening the assignment to less restricted access... feels just problematic to me.

Again, I don't know any of IPv6 enough to use it really right or wrong.

No network is "smaller" than /64. All end-networks are /64.

Split subnets at four bit chunks.

Allocated networks, like to a home or small office, should be /56 or /60.

Then you have to think about link-local addresses and privacy addresses, and how to hand out IPv6 and configure DNS: SLAAC vs. DHCPv6 or some combination.

I have a rough draft of a beginner document but it's not ready. :)

It seems to have absolutely terrible ergonomics as a technology, in nearly every conceivable way.

(Pedantically) Maximum prefix length of /64 is only required if you want/need SLAAC. If you're assigning static addresses or using DHCPv6 for assignment you can go as small as you want. It's not weird to see /127 for tunnel subnets, for example.

It's literally impossible to avoid long addresses being long or short addresses running out. One of those is a worse problem.

I didn't want to encourage non-standard behavior, but you are correct. Tunnels are a common use the same way /31s can be used in IPv4.

Going smaller than /64 is against best practice and unnecessary. People coming from IPv4 need to understand that trying to be careful with subnet sizing for purposes of preserving space is not a thing in IPv6 below /64. Maybe if a residential user has a /64 from their crappy ISP settings they'd need to do it, but not in a properly configured scenario and certainly not in enterprise.

The length isn’t the only thing that makes the ergonomics suck. The lack of backwards compatibility sucks. The “you don’t have to use NAT anymore” is great theoretically, but it renders a lot of casual network maintainers mental model of network security obsolete without a clear and simple alternative. The shorthand is not intuitive (though it’s not CIDR-level counterintuitive). Really, there’s way too much about working in IPv6 that’s not intuitive with even very solid IPv4 network knowledge.

So yeah, having to relearn a bunch of basic network knowledge that worked just fine for decades is a PITA, and I’m 100% positive a design process that focused more on the people that need to configure networks could have yielded a much friendlier, and therefore a much easier to adopt standard.

Instead of forwarding a port to a specific machine on the NAT page, you allow incoming traffic on that port to that machine on the firewall page. You'll want to add a stable IP to the host (in addition to the SLAAC rotating privacy IP if it already has one. One interface can have multiple addresses). That's pretty much it, except now you can allow the same port to multiple machines, where previously you could only forward to one (helpful for gaming, voip, etc. Wherever p2p works well). Firewall should already default deny incoming traffic just like ipv4.

you fling around words like "network maintainers" quite casually, dont you? :)

its really extremely simple, just dont NAT, is that really so hard? just because you dont NAT, doesnt mean you have to let the traffic pass through, that is also an extremely simple concept, no?

Fling it around?

There are a shitload of people who maintain networks, like home or small business networks, that aren’t network administrators. Most of those people are not prepared to have their Chinese WiFi cameras, myriad smart appliances, and heck, even home computers easily individually accessible from the internet. It’s an extremely simple concept, no?

NAT is good. It's CGNAT that's bad, because that's NAT imposed on subscribers, and not NAT that they control.