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saber6

26 karma · joined February 3, 2020

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saber6··on A detailed look at the router provided by my ISP
To bolster your point: Honestly they don't need to do much - the infrastructure is already there as a matter of being able to turn people's service up/down/on/off.

There is always a provider-managed CPE device that functions as the service demarcation point. This is the point where your contracted service speed is enforced (shape + egress queue and ingress policing).

You can have literally whatever router (dumb, smart, next-gen, whatever) spewing bits at X rate. The CPE will essentially normalize (police) that bit rate to your contracted speed (upstream scenario).

saber6··on In Praise of Phone Calls
As a 33 year old I really am confused by this statement.

While I love my texting, slack, etc, nothing replaces the low-latency engagement (intimacy) of a one on one phone call. I can parse someone's tone very easily on a phone call. Text rarely conveys such depth.

saber6··on Understanding the bin, sbin, usr/bin, usr/sbin split (2010)
I have been using Linux/Unix boxes for 19 years. I am ashamed to admit that I never learned this until now. Thanks!
saber6··on China Bans Americans Working for WSJ, NYT, WaPo
> "But China did it first!" Well, then we should highlight how outrageous and unacceptable that behavior is, and sanction them some other way. Not reciprocate.

You're falling squarely into the trap that I believe China plays so frequently: the belief that every other group of people shares a compatible value system and culture and any disagreement can be resolved with diplomacy, but never force.

To be frank, the Chinese view us as dumb by setting restrictions on ourselves, in an effort to inspire them to do similar self-restraint measures.

This methodology is flawed and outdated, the Chinese are not the Russians.

saber6··on GitHub blocked me and all my libraries
He had a very, very valid point until he devolved into referencing Japanese-American internment and Nazi Germany.
saber6··on Ask HN: Which configuration management software would/should you use in 2020?
Nitpick: I really don't suggest a divergence in the DB/stack-of-choice between Dev/QA/Stage/Prod. I've chased so many issues that were in the planning process dismissed as "yeah that's an edge case and most likely won't happen".

The reasons I've seen for doing so are usually penny-wise, pound-foolish. Penny-wise in saving a few dollars (conceptually) on a spreadsheet for per-env/per-cycle, while neglecting the long-tail consequence of your labor factor just growing, potentially forever, without regard for total cost of ownership.

Sorry didn't mean to rant. Hope this helps.

saber6··on Managed Kubernetes Price Comparison
While I see a lot of derision about Kubernetes these days, if I am starting a Greenfield platform/design/product, why wouldn't I use it?

There are tremendous benefits to K8S. It isn't just hype.

On the flip side, starting out as a monolithic (all in one VM) app will take significant effort to transition to micro services / K8S.

If I think I might end up at microservices/K8S, I think I might as well plan for it (abstractly) initially.

saber6··on Artificial and biological neurons communicate over the internet 2020 [pdf]
> The membrane time constant of a biological neuron is also about 30 ms, which gives you a fair amount of wiggle room even in the face of lag.

Interesting. I had no idea it was that long. I figured it was on the order of 10s of ns.

saber6··on Johns Hopkins Covid-19 Github Data Repo
Is there any real downsides to pulling in external repos as submodules?
saber6··on WireGuard Gives Linux a Faster, More Secure VPN
I’ve configured IPSec vpns for the better part of 15 years.

After using WireGuard for 5 minutes I knew this was going to be a big thing.

IPsec has too many fucking knobs. It is it’s pitfall.

saber6··on Using BPF to Transform SSH Sessions into Structured Events
I never thought about needing streams of information like this, but now that I am, this is a great way to provide general trace-tooling for containers and other things!

Very interesting post. Thanks for sharing.

saber6··on QEMU for iOS
You can pay for a developer account ($99/yr) which allows you to get your builds signed by Apple for the purposes of you running either dev-builds locally or internal-only apps for an organization.

That's what they mean by "no jailbreak required". Flipside is you gotta pay for a dev account to get your stuff signed to allow it to run.

saber6··on Why Germans won’t heat their homes even with free electricity?
This guy launders!

(Joking aside yes this is completely correct.)

saber6··on How Saudi Arabia Infiltrated Twitter
Yet another reason why Twitter should be banished to the depths of hell - what a stupid shit-show of a company.

I eagerly anticipate their downfall. Just like I did MySpace. And hopefully someday, Facebook. Fuck these parasites.

saber6··on I Worked for a Criminal Organization
> You're the one defending someone who's wrong.

Ok chief. I'll wait to see the outcome of the legal case. That has 10000x more weight than a random internet commenter that appears to be continually injecting FUD.

Also, just incase you missed my prior comment: Don't defend fraud artists.

saber6··on How 1500 bytes became the MTU of the internet
Because you don't know what you're talking about and are engaging in "what if"-isms? There is no business case to solve with jumbos frames over the Internet. I've been in this business for 20 years. Seen this argument a dozen times. It never changes.
saber6··on How 1500 bytes became the MTU of the internet
ATM is mostly dead. The only places it exists now is legacy deployments. Everyone has been deploying MPLS/IP instead of ATM for the past 15-20 years.
saber6··on How 1500 bytes became the MTU of the internet
IFP is really more to let the receiver knows where one stream of bits stop and the next stream of bits start. How they handle the incoming spray of data is up to them on a queue/implementation level.
saber6··on I Worked for a Criminal Organization
You're arguing semantics. Don't defend fraud artists.
saber6··on Boeing finds debris left in new 737 MAXes, now in storage
I think he’s just saying remember to get paid for it. Don’t do it for free if you are hourly or contracting. Required training in the US is a paid activity.
saber6··on I Worked for a Criminal Organization
This entity was a known spam shop. It took a while but someone finally put together a model showing the (what were thought to be) hidden relationships.

Don’t defend fraud artists dude.

saber6··on How 1500 bytes became the MTU of the internet
I understand. I have architected networks for over a decade now. The real issue is serialization delay. If I have a tiny voice packet that has to wait to be physically transmitted behind a huge dump truck packet (big), it can still be a problem even with high speed links with regards to microbursts.
saber6··on How 1500 bytes became the MTU of the internet
> Life would be so much simpler if the MTU had simply grown over time in proportion to link speeds.

For every thing besides real-time maybe.

saber6··on I Worked for a Criminal Organization
You sound extremely defensive with regard to this article — to the point that I am speculating whether or not you have vested interest in shooting down legitimate commentary.

You have responded to multiple comments with baseless FUD-like claims.

To which I contend.....

I smell Astro-turf!!!

saber6··on I Worked for a Criminal Organization
Gotcha. I misunderstood - I thought you were saying they were crazy and not to believe them etc.
saber6··on I Worked for a Criminal Organization
> [...] as far as I can tell.

It appears the law in this case feels differently.

The owners claimed under legal penalty that they had certain assets (paying customers, needs for IP addressing, etc). These statements appear to have been completely false. Thus, the trial.

And yes, lying to ARIN (or any RIR) about your customer base (need for IPv4 addressing) is just plain crappy. IPv4 addressing is a common resource - a 32-bit fixed address space - similar in concept to physical frequency allocation by the FCC.

There are 4.2B IPv4 addresses (minus some for RFC1918 and MCAST, etc). To lay illegitimate claim to them is really wrong, and more importantly, legally risky now.

saber6··on I Worked for a Criminal Organization
Flipside: This criminal enterprise spotted those same exact attributes, but the mitigating factor was technical competence and submissiveness. And if it came to be where they thought it would never end up (the situation today), someone would discredit them as crazy, given their background.
saber6··on Computer vision basics in Excel, using just formulas
> Microsoft Office Excel 2007 was the first version of Excel to use multithreaded recalculation (MTR) of worksheets. You can configure Excel to use up to 1024 concurrent threads when recalculating, regardless of the number of processors or processor cores on the computer.

Somewhere, there is probably someone running hundreds of threads for excel (likely in a beefy VM/VDI). It is probably wired so deep into their business that they are afraid to move to other methods (that are more scalable). But such is the power of excel. What you see is what you get is not to be underestimated.

saber6··on ADS-B Exchange – Co-op of unfiltered flight data
I like this. I think this data should be open-sourced, and recorded forever, without the ability to be changed. Maybe a good use for blockchain? (Please don't downvote!)

FWIW: I have been streaming FR24 my ADS-B data for a few years. In return they give you a business account ($50/mo value).

Back to the main point: Even the FR24 business-class account data is filtered. Given that this is an open protocol to begin with, I think the data should be recored "straight up" and made available to the public as a common service (benefit).

Future thoughts: Imagine if we had tons of people incentivized to deploy these? We could make "cyber" phased arrays on a massive scale by doing time of arrival analysis and so on. It could supplement the FAA primary/secondary radar system on a huge level. Perhaps even provide dense ATC control for drone operations where deploying primary/secondary radars is not feasible.

Just my $.02!

saber6··on An investigation of the Pentagon's UFO program
Re conspiracy theories - I basically admitted we (I) don’t know shit after the Snowden leaks. We joked about the NSA mass spying on us for years. It wasn’t a joke.

I have no information that leads me to believe UFO-tech is in a different category currently. It’s probably real. Just a question of when we all learn about it.

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