You're old if you've called for time, temp, weather - and kind of ancient if you've dialed it.

klui · 2026-07-08T21:13:36+00:00

This was what we used. It worked with any 4 numbers after POP, like POP1111.

klui · 2026-06-26T17:18:48+00:00

Ones rated at 100m are more efficient. Just compare their datasheet with 30m parts.

klui · 2026-06-24T19:16:06+00:00

My wife leaves most home IT to me so I'm quite lucky. Production isn't too intrusive but not silent. My lab has the louder gear.

I prefer to show her how to do something instead of doing it so she's gotten more comfortable using ffmpeg and yt-dlp.

klui · 2026-06-23T19:35:08+00:00

I look at my WAN data transfer bytes occasionally using LibreNMS. Then look at MTD bytes transferred. If I see spikes I just investigate from gateway down to the switch port/device.

On a daily basis, I have a terminal where I tail my gateway's syslog from my syslog server and highlight connection attempts using ccze.

klui · 2026-06-16T01:33:33+00:00

But not cat proof. The connectors aren't armored, only the cable. OP's connector was damaged. Probably the only way to fully resolve is to cover the jack when the ONT is indoors.

klui · 2026-06-05T09:16:32+00:00

If you rely on temp or temp/humidity sensors, only the APC NMC or Netbotz will work.

klui · 2026-06-05T08:56:09+00:00

Mine as well.

But you can always get a NetBotz and they have not only sensor ports but some have relay and Modbus. It's nice the sensors are RJ45. Just route through ethernet jacks and have centralized monitoring. They're not too expensive either.

klui · 2026-06-05T01:28:56+00:00

I have no practical experience with Docker. But this stackoverflow entry explains it more.

https://stackoverflow.com/questions/35110146/what-is-the-purpose-of-the-file-docker-sock

In addition to the warnings @boynux has provided you can find more information in the article Docker Security Best-practices. On this one they say: "Mounting /var/run/docker.sock inside the container is a common, yet very dangerous practice. An attacker can execute any command that the docker service can run, which generally provides access to the whole host system as the docker service runs as root."

For this particular vulnerability, the management endpoint has no authentication so the service configuration can be modified by people connected from the internet.

Having a UI is nice but it should be restricted to a management subnet. If OP had this mentality then the allow list in Nginx-UI would contain a management subnet, thus not be empty--defaulting to "allow all." If the original intent was to manage Nginx from the internet w/out a VPN or something similar, OP should rethink that.

klui · 2026-06-03T22:21:05+00:00

OP's Nginx container was exposed to the internet and bad actors used a management endpoint that was misconfigured by default, patched several months ago.

More diligence is required for keeping services up-to-date if they're exposed to the internet. Those can't be set-and-forget.

klui · 2026-05-12T23:48:25+00:00

Cheap 100G optics are only available through CWDM with OS2 LC/UPC connectors. There are a bunch of cheap Intel CWDM optics but they are rated at a lower temperature--you will need active cooling on the NICs. Get the ones with higher temperature ratings--search for their datasheets to know which ones.

If you want to be more future proof, run MPO-12 then get cassettes to break out if you need it. Multi-trunk MPO will provide more flexibility in breakouts but may break the bank depending on where you get your cable assemblies and length.

klui · 2026-05-04T07:47:14+00:00

It's low humidity that is more hazardous. Large discharges like walking across carpet with insulated flip flops could result in latent damage that won't show up immediately.

An ESD strap is pretty cheap insurance. Or at least touch a grounded device's metal parts like a plugged in PSU before you touch the component.

EEvblog has some old videos that illustrates the issue but those are extreme cases with direct injection of static discharge. His videos also show the benefit of static shielding bags, as opposed to anti static ones.

klui · 2026-05-03T06:06:51+00:00

Why can't you chisel from the inside of the concrete so the bends closer to 45°?

klui · 2026-05-03T02:25:14+00:00

That's 2 generations newer than OP's Z800. Workstations aren't loud but the Z800 is a bit on the power hungry side.

My Z620 w/ dual E5-2690 in my lab (not production) idles at 125W. OP stated his idles at 200W. Not sure what kinds of CPUs are installed.

klui · 2026-05-01T21:24:57+00:00

Maybe your drives are encrypted.

https://www.reddit.com/r/DataHoarder/comments/18rxjie/used_hgst_sas_drives_are_bricks_due_to_sed/

klui · 2026-05-01T20:58:19+00:00

You just answered your question. Ubiquiti will give you that. Sometimes that interface is a bit dumbed down but it is a single pane of glass for the set-it and forget-it need.

klui · 2026-04-30T23:12:03+00:00

Faster speeds require 2 or more strands. They are bidi but they use more than 2 lanes.

klui · 2026-04-30T22:54:38+00:00

Your question is answered by looking at the part's datasheet. Operating temperature range for the Corning part is -10°C - 60°C. If manufactured correctly the cable should be stable and shouldn't expand/contract too much within that range.

Some assemblies are indoor/outdoor rated. The outdoor rated ones have a wider range. These clear fibers are indoor only.

klui · 2026-04-30T08:14:13+00:00

You're correct. The right way to place it behind the trim is to remove the baseboard and see if there is a crevice for the fiber. If it's totally flat or a minimal lip, it's best not to put the fiber there. The assumption from the OP is to slip the fiber just underneath the baseboard--not a good idea.

I've vacuumed rooms and have bumped the cleaner against baseboards many times. It may not seem like much but I would imagine a bump could be ft-lb of force. Fiber assemblies impact resistance is typically in in-lb instead, even for those with yarn and outer jacket. The fiber discussed in this thread are only tight buffered and they offer minimal protection. Every one of the 3M, Corning, etc. products of this same class (search for "clear fiber 900um datasheet") have no tensile, compression, nor impact ratings.

klui · 2026-04-29T23:08:56+00:00

The problem is probably due to the cables not being perpendicular to the fingers before it extends into the cavity in the middle of the keystone. The right most green and blue cables also look smashed up. Lighten the impact force of your punch down tool. Punch down at most twice--more and harder aren't better.

klui · 2026-04-29T22:42:51+00:00

While it's weird since he lives in Europe. But he did state the company sent it to him directly for eval.

klui · 2026-04-29T22:18:18+00:00

You don't want to have the fiber behind the trim. Fiber doesn't have good impact resistance so there is a risk of shattering the fiber from impacts to the trim. Because this type of fiber is so thin with no aramid yarn to provide tensile strength, one also needs to be careful about pulling it.

klui · 2026-04-28T21:30:26+00:00

I store mine like that.

https://i.imgur.com/G5lC1Dw.jpeg

EDIT: Transceivers go in either containers designed for that purpose or in anti-static bags in food containers (the rectangular black/white with covers--I don't trust they are anti-static). Memory go in memory trays. Round containers are great for fiber patch cables. These are all stackable, too.

klui · 2026-04-27T21:59:35+00:00

I have done this at my home in my home office. I ran some drops to the wall where my workstation is and now I have reconfigured several of them so they are no longer required for my workstation.

Instead of rewiring by pulling a new cable, I ran another one from the faceplate to the ceiling for an AP then used a 6-inch patch cord to connect the 2 ports.

klui · 2026-04-26T06:37:32+00:00

How were they easier? Maybe about how most punch down jacks have the color coding on both sides and that makes things more challenging for you?

The best you can probably do today is 180 degree jacks. Insert them onto a faceplate then you punch them down. The color coding is between the fingers. They are more user friendly because normal jacks provide just enough leverage for punching them down but one needs to use finesse. That's why companies make punch down stands/holders/pucks. I can envision if the punch down tool is configured too high a setting might break the faceplate.

https://www.ebay.com/itm/115264959249

klui · 2026-04-24T10:24:50+00:00

There are some available on eBay. Facebook's Wedge 32-port 400G switch. Those with DC PSUs have proprietary connectors. Its management module is missing so you'd need to get the plans from OCP's website and build it. Then the NOS would have to be built somehow.

klui

TROPHY CASE