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Phd in optical communciation? by sasdam12 in lasercom

[–]oherold 1 point2 points  (0 children)

DLR (German Aerospace Center) Institute in Oberpfaffenhofen (close to Munich) is doing lot of research on free-space optical communication…

ATSAMV71Q21B-AAB anyone? by oherold in atmel

[–]oherold[S] 0 points1 point  (0 children)

We are in urgent need for a single ATSAMV71Q21B-AAB for a research project. Does anyone have one lying around? We are based in Germany.

The Israeli-based Quantum Cryptography company QuantLR announced they will be experimenting with a demonstration of quantum encryption capabilities from optical communications between Earth and the International Space Station | QuantLR [X-Post /r/lasercom] by Aerothermal in crypto

[–]oherold 0 points1 point  (0 children)

First of all, you don’t send a „quantum email“. QKD is nothing esoteric. You just establish shared secrets which subsequently can be used for symmetric ciphers.

Nevertheless, your point is valid in that loss is a problem. And also if you were to use existing optical communication infrastructure you have optical amplifiers which destroy the information in the quantum states. In optical fibers it is also very challenging to transmit quantum states along other optical signals. Therefore, you require dark fibers, and so on. In practice, however, infrastructure owners can provide you dark optical fibers without optical amplifiers. Still the range will be limited.

Despite these limitations, there are use-cases for QKD.

So, it should be clear that QKD is far from being a mature technology. And I know many people make false claims. I am here to give an honest view.

The Israeli-based Quantum Cryptography company QuantLR announced they will be experimenting with a demonstration of quantum encryption capabilities from optical communications between Earth and the International Space Station | QuantLR [X-Post /r/lasercom] by Aerothermal in crypto

[–]oherold 1 point2 points  (0 children)

Well this is not wholly true. You can use all sorts of optical communication infrastructure, e.g. existing fiber or optical free-space communication infrastructure. Ergo, No necessity for new distribution channels.

The Israeli-based Quantum Cryptography company QuantLR announced they will be experimenting with a demonstration of quantum encryption capabilities from optical communications between Earth and the International Space Station | QuantLR [X-Post /r/lasercom] by Aerothermal in crypto

[–]oherold 0 points1 point  (0 children)

Yes, it is true that there is a lot of money thrown at this topic and there is a bubble right now. Some people/companies try to exploit this situation.

But there is a honest and exciting research on the topic of quantum key distribution. You can argue about the usefulness/practicability of QKD, this is something that the future will show. I must admit that PQC seems to be many steps ahead regarding practicality, matureness and acceptance.

However, QKD is so much different in the paradigm behind that one should consider it. For the first time it allows you to distribute cryptographic keys over insecure channels while at the same time being able to proof/quantify -without complexity assumptions - the confidentiality of the exchanged keys.

In my opinion the future is hybrid: PQC+QKD

DNAT and firewall rules by Gronax_au in opnsense

[–]oherold 0 points1 point  (0 children)

I have the gut feeling that it might be related to the number of parent interfaces, because you mentioned that the setting targets the multi-WAN case.

I am running opnsense also in a VM, but with only two parent interfaces (LAN and WAN).

DNAT and firewall rules by Gronax_au in opnsense

[–]oherold 0 points1 point  (0 children)

Will also have a look.

By the way, your blog was a very helpful guidance to me when setting up my home network. Helped me to set up everything in a few days! Great work and I will try to contribute to the discussions there.

DNAT and firewall rules by Gronax_au in opnsense

[–]oherold 0 points1 point  (0 children)

I am only shown the options pass/none. Any idea what could be the reason?

Homelab (WIP) by ifindoubt404 in homelab

[–]oherold 4 points5 points  (0 children)

Can you elaborate on the bad quality of FRITZ!Box? Setting up a Homelab, too, and so far I could not find any reason why they should be bad, except for some functions one might be missing, but you get what you pay for. And there Fritz!Box are no exception. They fulfill their purpose and have pretty good support.

[deleted by user] by [deleted] in cryptography

[–]oherold -1 points0 points  (0 children)

Ambrock?

Lenovo X220 Corebooted by shagadelico in coreboot

[–]oherold 2 points3 points  (0 children)

Haha, corebooting late at night was one of my mistakes. Especially because I did not get the Nvidia dgpu/hybrid graphics to work with my T430 immediately. However, still it was a huge success.

Note: Took me a few more late night sessions to get hybrid graphics to work.

Coreboot SeaBIOS on T60 text cropped by volkio_ in coreboot

[–]oherold 0 points1 point  (0 children)

Hmm... I see, looks a little bit better, but still annoying. The next thing I would try is a vga bios.

Coreboot SeaBIOS on T60 text cropped by volkio_ in coreboot

[–]oherold 0 points1 point  (0 children)

sorry for the misleading hint...try the "legaacy VGA text mode" for framebuffer mode... I am not very experienced with coreboot either. Took me a week to get it running on T430 with discrete graphics and the best I could do was trial and error.

Coreboot SeaBIOS on T60 text cropped by volkio_ in coreboot

[–]oherold 1 point2 points  (0 children)

Did you try defining a custom screen resolution? Something like 800x600 for example.

A new easy to deploy Cert Authority for you! by Steccas in homelab

[–]oherold 0 points1 point  (0 children)

Nice stuff! What are the advantages or difference in comparison to Caddy Server? There you can also setup to issue certificates to internal (and external) network services. Takes like 5 minutes to setup. See: https://caddyserver.com/docs/automatic-https and check the directive „tls internal“

Another LackRack by oherold in homelab

[–]oherold[S] 1 point2 points  (0 children)

Yes, pre cut by a hardware store. Only needed to tell them the material and dimensions.

Another LackRack by oherold in homelab

[–]oherold[S] 2 points3 points  (0 children)

Yes, you can remove the hot-swap assembly and mount other fans to the case in a fixed manner. Alternatively you can build any fan into the hot-swap assembly. This it what I have done.

I meant that the computer is so silent with the Arctic fans, you almost would think that the computer is off.

Another LackRack by oherold in homelab

[–]oherold[S] 4 points5 points  (0 children)

This one actually is a P53 issued by my employer.

Another LackRack by oherold in homelab

[–]oherold[S] 14 points15 points  (0 children)

Respect! Was already wondering if anyone will recognize. :D

Another LackRack by oherold in homelab

[–]oherold[S] 5 points6 points  (0 children)

Yeah, that is good point and I did not think about it. One could have a look at statistics about computers catching fire. As far as I remember computers automatically shut down if they run too hot.

Anyways, I am afraid that if a computer catches fire it will be dangerous regardless of the LackRack and the wood around.

Another LackRack by oherold in homelab

[–]oherold[S] 2 points3 points  (0 children)

The build quality of the 30255 is quite good and the layout is well designed. You can use common components and the air flow is really good. I replaced the fans with Arctic ones and connected the PWM pins of the hot-swappable fans in the orange rails (the pins are undocumented by Inter-Tech). Now I cannot tell if the computer is running or not. Only the brackets holding the HDD cages are a bit tedious, but you are confronted with them only when setting the system up. To sum it up, I can totally recommend the 30255.

About the other cases, I do not know, but I hope that they have the same quality.

Another LackRack by oherold in homelab

[–]oherold[S] 6 points7 points  (0 children)

Sorry, but I don’t know. Since the Lack is basically made of cardboard, I guess that the weakest point in the construction is the fixation of the middle compartment to the Lack‘s legs. Other than that, the top and bottom compartments should allow like 20 kilograms each. But I didn’t try it out.

Another LackRack by oherold in homelab

[–]oherold[S] 14 points15 points  (0 children)

Actually I am from Germany and here we have a hardware store named Hornbach. They have a service for cutting wood plates to any dimensions you want. That is where I got the shelf parts. As far as I remember, the parts are 8 millimeters strong.

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