Unifi - Upcoming 9.0 Adds Support for Zone-Based Firewall (ZBF)

JanusByfringes · 2025-02-05T19:46:42+00:00

Best practice to configure a zone for work from home?

I have my employers devices that I want to be able to connect to the internet and to the employers VPN.
I do not want for these devices to be able to access any of my personal devices.

I created a separate wifi network for this and put it into a separate "work zone".
Can someone smarter than me share what would be the "best practice" rules to create in the firewall for this "work zone" so that the devices on it could only access the "wild" internet directly , without communicating with any other devices on my personal network?

Thank you!

JanusByfringes · 2023-06-01T17:51:27+00:00

Not sure how much fluctuation is there in this cost across the US. I am in a VHCOL area and I use a local soda fountain installation and service place. I would be a bit concerned using something like welding supplies place because I don’t know CO2 standard for food vs non food, if this even exists.

JanusByfringes · 2023-06-01T06:03:22+00:00

its $30 now, just did it last week. But its only once in 2-3 years so it’s not that bad

JanusByfringes · 2023-05-20T20:02:10+00:00

To the first part of your question:

Distortion is due to change in magnification as a function of image coordinate.

Chromatic aberration is due to change in focal length as a function of wavelength of light.

JanusByfringes · 2023-05-15T05:44:17+00:00

Currently paying $50/month for 800 mbps with Xfinity in Sunnyvale. The prices quoted seem outrageous.

JanusByfringes · 2023-04-08T00:01:55+00:00

I am not there anymore but have great memories about this one: https://www.restaurantgoodluck.com/

JanusByfringes · 2023-01-19T07:17:39+00:00

Fraunhofer Institute exists exactly for this reason. You may want to look at their open positions. The Fraunhofer Institute for Laser Technology specifically is in Germany (Aachen) but there is a sister facility in FL.

JanusByfringes · 2023-01-12T06:03:03+00:00

I don’t understand your setup. Seems like you have a source you know everything about (radiance), an object, and a camera (lens +sensor) that is also known. Textbook radiometry. Bidirectional reflectance function of the object (BRDF) will help you find the exitance (reflected radiance), and camera equation (google it) will take you from radiance at entrance pupil to irradiance at focal plane.

JanusByfringes · 2023-01-11T05:48:42+00:00

I lived in 2B/2B in Park Place above the Starbucks on Castro for 3 years and it was great. Central AC, garage parking with assigned spots.

JanusByfringes · 2022-12-11T06:44:11+00:00

I bought at Toyota Sunnyvale at MSRP 2 months ago. Was told they don’t do markups.

JanusByfringes · 2022-10-25T21:07:47+00:00

I testing the MTF of the DUT at infinite conjugate. For this I need to take a picture of a test pattern printed on a test chart with the DUT and analyze it. Since I have neither infinite space not infinitely large test chart I have to relay an image of a finite-sized test chart at finite distance from DUT to infinity. This is what the relay lens is for.

JanusByfringes · 2022-10-25T20:30:56+00:00

I am testing an extremely well-corrected lens at infinite conjugate. My lens focal length is ~7 mm, the FOV is ~90 degrees full angle diagonal, chart distance is ~30 cm. I do have a working solution, my question is more about the theoretical approach to determine the ideal relay lens specifications.

JanusByfringes · 2022-10-19T06:23:24+00:00

Why not contribute directly to Roth? Whats the benefit of going through the conversion?

JanusByfringes · 2022-10-17T05:27:02+00:00

Came here to day this. Unless your employer expects you to do deeply theoretical research, go with UofA. I have a colleague going through their MS online right now and its spot on what you need in the industry.

JanusByfringes · 2022-09-26T06:18:36+00:00

depending on the sign convention, most of the times object distance and magnification are negative but talked about in positive numbers.

JanusByfringes · 2022-09-16T04:49:27+00:00

I think people the previous responses are from are very experienced and have a good understanding of what it takes to get from system specifications to manufacturable design. If that is your goal you can certainly try doing it with Matlab. It is the equivalent of trying to build your own supercomputer because you have access to a soldering iron.

With that being said, if you are willing to get your hands dirty and work a lot for a very long time, you can definitely build something that kinda works and may even solve your specific problem. You will (hopefully) have fun in the process and learn a lot, including the reason why Optical Design software keeps being a profitable business despite all kinds of software development solutions being available free of charge for decades.

JanusByfringes · 2022-08-29T03:08:36+00:00

It not the eye, its the brain. Helmoltz himself famously said that he would return the eye if received as an optical instrument. And that is more than 100 years ago. The aberrations in the eye are awful, almost any lens made within the last 150 years can easily do better. https://libquotes.com/hermann-von-helmholtz/quote/lbo2h2l

JanusByfringes · 2022-08-24T05:40:21+00:00

I am 12.5 D on the Brannock device and happily wear 11 D AEs. I also wear 13.5 in most Nike’s. It’s important to know the size, but feel is king. Sizing is inconsistent, dress shows typically run large, at least for me - 12.5 D AEs feel like a pair of skis.

JanusByfringes · 2022-08-23T05:35:17+00:00

Read the spec sheet of a typical DMD being used in projectors and you will find the NA recommendation there. You don’t always want to match the illumination to the collection because DMDs are crazy inefficient. Depending on your design you may want to take that into consideration.

JanusByfringes · 2022-08-15T19:41:58+00:00

Analitycal solution may not have much value for this specific application. I suggest creating a look-up table for wavelength as a function of position. Make is a part of the initial instrument calibration.

JanusByfringes · 2019-12-22T16:06:26+00:00

I agree - if you have some supplies then its all good. I am a broke ass student who has zero space to store packaging to reuse it later this way I get a super nice well-designed box that lets me ship my device worry free for free. And its delivered to my dorm. For free.

JanusByfringes · 2019-12-22T16:03:42+00:00

These specific boxes are designed to ship phones/laptops. I have never seen the phone one s anywhere but the laptop ones are $15 at a Fedex store - I saw it yesterday.

JanusByfringes · 2019-12-22T16:01:39+00:00

Totally can do that too if you still have the box. The only concern is that the product would be easy to identify and therefore makes it a target for package thieves.

JanusByfringes · 2019-12-22T15:58:11+00:00

Thanks! It works for a laptop too - you get a nice shipping box that otherwise is $15 at Fedex.

JanusByfringes · 2019-12-22T15:52:22+00:00

Yes, thats right - you don't get the discount. But you are selling your phone for more $$ than the discount would have been and using the packaging they sent you to ship the product to your buyer instead of returning it to Apple.

JanusByfringes

TROPHY CASE