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benjojo12

3,523 karma · joined September 6, 2013

[ my public key: https://keybase.io/benjojo; my proof: https://keybase.io/benjojo/sigs/8FX1Az_xWCD3PsKRIqv-Fr4nuxUzLF2LEMf8XWLZozE ]
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benjojo12··on LTO Tape data storage for Linux nerds
Ah, ok fair enough! I should have pointed that out more clearly!
benjojo12··on LTO Tape data storage for Linux nerds
I mention this in the post itself
benjojo12··on LTO Tape data storage for Linux nerds
If you have 500TB of tape, the chances are that you are reading at least one tape while also needing to write stuff.

I've personally never experienced that scale, I'm sure the industry has some recommended ratio of drives to tapes.

benjojo12··on LTO Tape data storage for Linux nerds
The header image is the insides of a LTO 5 tape
benjojo12··on LTO Tape data storage for Linux nerds
I agree somewhat. Encryption is more critical on tape because there is no easy path to wiping a tape, and in a company situation if you need to erase something in your backups too (think GDPR erasure), then encryption is reasonably critical unless you want to go though all of your cold backups.

For my archival use (the reason why I got into this in the first place) I do not encrypt nor compress the data going to tape. For server/desktop backups. they are compressed and encrypted.

benjojo12··on Show HN: My 486 Server
How did the Helios64 Tank? I own one and it's fine?
benjojo12··on Ghost in the ethernet optic
Oh huh! Oh well. My main effort was to conceal the MAC's
benjojo12··on Ghost in the ethernet optic
Mono-cultures are bad! I'm British. The blog is my blog, not a corporate blog.

I think it's fair for my own content to genuinely be me.

benjojo12··on Ghost in the ethernet optic
Where can you see serial numbers? I thought I got them all
benjojo12··on Ghost in the ethernet optic
Who says you can see the side they swapped the optic on? For datacenter cross connect links, its not uncommon for the other side of the link to be somewhere you can't see/have access to.
benjojo12··on Ghost in the ethernet optic
> Ben, do you plan on playing around some more with these to find out if they can be hacked to run your own OS?

Nope, I'm probably going to use it as a remote monitoring/out of band device when the time comes. The device is useful enough in it's slightly closed source state than as a device for hacking (and maybe a bricking risk)

benjojo12··on Ghost in the ethernet optic
(Author of post)

They advertise this as a network appliance, so it makes sense that they use Debian since being able to install packages via things like apt makes the whole experience much easier. A lot of career network engineers are not that savvy with sysadmin type roles, so something like buildroot would alienate their market a little

benjojo12··on Implant.ARM.iLOBleed.a
There is also https://www.bleepingcomputer.com/news/security/you-can-bypas...

Since HP do not make it easy to get iLO updates if you don't have a support contract with them. I suspect many machines are vulnerable to this.

benjojo12··on After 10 years, HTTPS is truly everywhere
Yes.

ZeroSSL.com (Aka Comodo), BuyPass.com, SSL.com

All offer 90 days or more free SSL certs

benjojo12··on Ask HN: Intercepting HTTPS – How can we trust anything?
If the MITM CA is installed (maybe only via Group Policy) then browsers relax their requirements for CA's. But some domains (like google) are strictly locked down to a specific set of CA's in Chrome.

Since TLS Interception is critical for some places to achieve their duties (either auditing in banking, or content filtering in schools) we will always have some kind of legit use for MITM CA boxes.

It gets slightly worse if you look at how AntiVirus generally installs CA's to do malware content filtering. Cloudflare publishes stats on what % of traffic they think has been MITM'd: https://malcolm.cloudflare.com/

benjojo12··on Show HN: lazymc – Put your Minecraft server to rest when idle
Nice! I wrote something like this ages ago as well: https://github.com/benjojo/mcod
benjojo12··on x86 assembly doesn’t have to be scary (2018)
Really? (Author here)

What browser are you using?

benjojo12··on Why Isn't Google Fiber Peered with Google
Because people give them bgp tables to get better stats on websites like bgp.he.net, I (bgp.tools) have to do the same thing, see list: https://bgp.tools/credits
benjojo12··on Playing Battleships over BGP (2018)
What part of yesterday was showing that it was possible to use BGP dangerously?

If you are certain in this argument, then you master electric switch is dangerous because you could switch off the power to your house.

benjojo12··on Playing Battleships over BGP (2018)
(Keeping in mind that replacing BGP is similar hard-ness as replacing SMTP, and thus, might not be worth it)

Honestly, the issue that exists with BGP is not the protocol. The issue is attached to trust, and there is not a instantly fixable problem with a different protocol.

One issue with the internet as a whole is that seemingly simple questions are actually hard, The one is slowly being fixed with RPKI is "Who actually owns this IP address", knowing this we can build better filters against direct (origin AS != owner AS) hijacks.

However the next question that has no solution for is "Who is allowed to carry this route/transit this data?" -- This is going to be unbelievably hard to solve with certainty, There is question that maybe a PKI solution could be deployed (BGPSEC). However you also will hit the next issue.

The bgp table is massive. 1M+ routes that is stored on machines with reasonably long lifetimes. It does not help that in terms of computing power these machines are in general very slow. A multi TBit/s router may only have a 2014 era laptop CPU powering it. So computing anything 1M times quickly is a massive ask, and when links go down, it is reasonable have fast recompute/reconvergance times.

Fixing bgp is not a easy issue. Anyone who is telling you so is either fraudulent or does not understand the sheer scale/scope of the issues attached to the protocol.

benjojo12··on Playing Battleships over BGP (2018)
To add on, BGP has a very much "meme" status of being scary and dangerous, and any touching will break youtube etc. [Mostly perpetuated by infosec circles]

It's really not the 2000's anymore, BGP is mostly safe and filtered. There are still improvements to be made (I've even written on the blog about them), but one persons immense fuck ups are far less likely to cause issues now that IRR filters and prefix limits exist.

benjojo12··on Playing Battleships over BGP (2018)
Who said I tested non-live?

The actual beta builds/sanity checks were done just with two VMs peered with each other, but the live internet one was done in one take (and never again, at least by me)

benjojo12··on Playing Battleships over BGP (2018)
Author of the post here, Ask me almost anything I guess(?)
benjojo12··on Rsync.net Technical Notes – Q3 2021
I think the "Mix SSD vendors/batch numbers" is a hold over from the very early days of SSDs where a handful of people get seriously slimed by having 90%~ of their same-brand-same-batch drives in a single machine fail at once due to some SSD batch failure.

As a side effect people generally now stagger SSDs a little to avoid something similar happening (ofc if you have multi machine replication this is less of a issue, but still a total machine loss can hurt due to capacity loss or parts shortages in edge locations, etc)

I've personally not seen a synchronised SSD array happen failure for a long time, but it's hard to know how much of that is because people now plan to avoid them.

[edit]

with the exception of: https://www.engadget.com/2020-03-25-hpe-ssd-bricked-firmware...

benjojo12··on Launch HN: RescueTime (YC W08) – Redesigned for wellness, balance, remote work
In a previous life (2013?) this software got forced on me and the team/company I worked on as "boss-ware".

Unsure if the founders were aware of this or just "well shit happens", but it defo means I can't see this product without also seeing the uncomfortableness of working with a "all eyeing eye" on your system tray

I have no idea if the product is still somewhat geared for micromanaging/boss spying but it left a really bad taste for the whole product segment for me.

benjojo12··on Teaching a cheap ethernet switch new tricks (2019)
(Post Author here)

The non POE N1100's are fanless, Thankfully don't really contain any features that would require licencing, that being said also has no hardware Layer 3 capability, so not really in the same class as the N3XXX or N2XXX's

The licencing thing does suck though, that's poor from Dell who normally (at least switches wise) do a reasonably good job for the price.

benjojo12··on Teaching a cheap ethernet switch new tricks (2019)
(Author here) These switches got a lot more expensive at the start of the pandemic, I think the chipsets became hard to source.
benjojo12··on AS13335 doing SSH scanning
via support ticket with cloudflare. They didn't explicitly confirm it, but my experience is that they would have corrected me if that was wrong :)
benjojo12··on AS13335 doing SSH scanning
To the best of my knowledge, the IP blocks in the 8.0.0.0/8 range announced by cloudflare are their VPN exit blocks.

I had similar issues with them in the past spewing weird traffic. Didn't really ever reach a conclusion on it, other than just reducing logging for that error condition a scanner was triggering.

benjojo12··on IPv4 pricing
They already do in the form of the LIR and resource fee.
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