Investigation of phishing scheme

Since November 2022 I've received several suspicious emails in mailbox. This is unusual for Gmail (I think that Gmail has best spam/virus filter ever). Therefore, I decide to investigate what is it.

Let's investigate the latest (08.01.2023).

golang | error: remote error: tls: no application protocol

The short note.

I got the error "error: remote error: tls: no application protocol" in golang project during connection to a nginx webserver.

The core of issue - nginx was not configured for HTTP/2 protocol.

Keyboard issue in Minecraft on Android

My son plays Minecraft on their Android tablet (Huawei MatePad 10.4 2022). And recently he faced with problem of using Huawei Smart Keyboard. The keyboard works well until you press the Enter key (entering to the chat). After exiting the chat you can't do anything (on keyboard) cause Android think that you are still typing in the chat and suggests you proper words (over the game). 

YouTube video freezing issue in Firefox (not yet solved)

For more than 2 years, I've an issue with periodical freezing of some YouTube videos (99% is Live events) in Firefox Browser. At the same time the same video playing in Chrome well.

Description

• Video: Freezes for 4-12 seconds, then runs for a few seconds and then again
• Audio: Is always playing well, without any interruptions
• OS: Windows 10 1607 (fully updated)
• Firefox: xxx - 102.0.1 (64 bit) (latest)
• CPU: Intel Xeon E5-2620 v3
• RAM: 16 GB DDR4
• VGA: Nvidia GeForce GTX 1060 6GB (latest driver)
• Internet connection: 100 Mbps to ISP / ~20 Mbps to USA

Examples

• Nasa Live Stream - Earth From Space : Live Views from the ISS
• NASA LIVE Stream 2 - Live Views & Audio From The ISS
• Deep Light
• The Good Life Radio • 24/7
• ABC News

All of these live videos are freezing.

Keenetic Mesh Wi-Fi | Periodic packets loss

To improve quality of WiFi coverage in my apartment I bought a second Keenetic Giga router (KN-1011) in addition to Keenetic Giga (KN-1010). From my perspective Keenetic is the best router for home usage. This confirms the presence of Mesh feature that can be configured by simple wizard.

The second router was placed in second room behind 2 walls from the primary router and connected by Ethernet cable Cat 5e (1 Gbps). 

Everything was perfect until I decided to play online game where I felt periodic freezes. ping shows loss of 2 packets per ~ 1 munite.

How to share SharePoint Online website with another tenant by Azure B2B

The case

Two companies (for example, parent and affiliate) have their own Microsoft tenants. Both companies are big, let's say more than 10000 users each. Everyday companies hire and fire employees.

The first company (parent) has an Internal website on SharePoint Online. Employees of the second company (child) have to get access to this website. Someone else shouldn't have rights.

Standard approach of Azure B2B "invite each user" is not a suitable option. You (or someone else) can't (it's possible, but I assume you do not want this) manually send an individual invitation for each new user of child company.

Is there another way? Yes, but it's not perfect.

Exchange 2016: What if disable all HealthMailbox mailboxes?

The idea of the post is issue that we faced recently. Sometimes Outlook freezed for a while with warning message.

At the same time SCOM started to warn about issues with Application Pool of one Exchange server. This issues should be linked, but how? 

Exchange server registered warnings 5011 in System Event Log:

How to install Cloudflare WARP on Kali Linux

Surely for experienced Linux admins and experts this is easy question, but for beginners (as for me) it might be helpful.

What we have: Kali Linux 2021.2

What we want: Cloudflare WARP

Let's try to install: sudo apt install cloudflare-warp

And we get an error: E: Unable to locate package cloudflare-warp

Office 365 error "Sorry, we are having some temporary server issues"

 Some time ago I helped with resolving an issue with authorization in Office 365 on Windows 8.

Symptoms

• Error "Sorry, we are having some temporary server issues" while trying to authorize in any Office 365 apps (Word, Excel, etc.).
• Error #455 in the Application Event Viewer "taskhostex(10032) WebCacheLocal: Error - 1032 (0xfffffbf8) while opening log file "C:\...\AppData\Local\Microsoft\Windows\WebCache\V01.log".
• Internet Explorer does not load any website.
• Services window is blank.

Is it possible store VeraCrypt encrypted container on Google Drive and Microsoft OneDrive?

Cloud drive is a best and simple way to protect the data from loss (second copy).

VeraCrypt (as TrueCrypt fork) is a good tool to protect the data from leake (encryption).

It is reasonable to use these technologies together. But this solution has several specifics:

• Encrypted container (VeraCrypt volume) is a single file that can be large. How its changes will upload to the cloud?
• Encrypted container does not change the size. How cloud tools notice a file change?
• How many data VeraCrypt changes during on-the-fly encryption (OTFE)?