windows 7 – Cannot connect to website from host machine

I was configuring my VirtualBox preferences and fixing a problem (regarding different extension pack versions; irrelevant) when I suddenly realized that even though I fixed my original problem I suddenly could not connect to the VirtualBox website from my host computer.

I know that while fixing my original problem, I was still able to connect to the website.

I then tried to enter the following commands:


Pinging ( with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),


Pinging ( with 32 bytes of data:
Reply from bytes=32 time=109ms TTL=57
Reply from bytes=32 time=114ms TTL=57
Reply from bytes=32 time=103ms TTL=57
Reply from bytes=32 time=107ms TTL=57

Ping statistics for
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 103ms, Maximum = 114ms, Average = 108ms

So I definitely have a slow yet working Internet connection. I tried uninstalling VirtualBox and the drivers, resetting my network adapter, clearing my DNS cache and restarting my computer yet I still can’t connect to the website. I know that my hosts file is in mint condition so it might not help.

Machine information:

  • OS: Windows 7 x64
  • IPv4 DNS:
  • VirtualBox version: 6.1.18-142142

Are there any ways to solve this? Thanks in advance 🙂

ssl – Forward/tunnel/transfer SSH traffic from/to Hyper V Windows machine

I don’t know how exactly it is implemented, but some utility open vpn client with some pre-configuration already, so if you want to give the access to somebody, you give that utility to the person, provide credentials and this person can start working. The problem here I can see that when somebody gives me some .exe file there could basically be anything together with that client and it is a way to bring some viruses or other unwanted software to own machine.

Is there the way that I can run that open vpn client on the Virtual Machine and then just forward/tunnel/… traffic from and to it to my local machine so I’ll be able to use VPN without any risk of getting some unwanted software?

applications – Comparing Time Machine backups with Beyond Compare?

applications – Comparing Time Machine backups with Beyond Compare? – Ask Different

sql server – Read-Scale Availability Group between a Transactional subscriber and another machine

I am trying to configure Read-Scale replica between a transactional subscriber and a 3rd machine. I could create the group. But, when i attempted to add the DB (which is a transactional – subscriber) to be part of my read scale replica group, I am getting the following message and not able to complete my read scale replica. My replication is already configured and working fine. Configured the AG as well. All i am doing is, trying to add the DB to the AG.

Here is the message:
Special considerations exist when adding a replication Subscriber database to an availability group. For more information, see “Replication and Availability Groups” in SQL Server Books Online.

But the BOL is not saying anything about AG on a subscriber. Any help on this would be highly appreciated.

Does the miner machine get any other type of reward except confirmation of transaction in bitcoin?

As a result of mining, miners receive income from two sources

  • The mining reward per block, which halves approximately every 4 years.
  • The transaction fees for the transactions the miner includes in the block.

Nothing else.

The miner includes as the first transaction in the block (the “coinbase” transaction) a transaction with no inputs and with outputs to one or more addresses of their choice with a total amount which is less than or equal to the sum of other included transactions fees and the current mining reward .

xcode – iOS Simulator is not simulator technically on Apple Silicon M1 Machine

xcode – iOS Simulator is not simulator technically on Apple Silicon M1 Machine – Ask Different

tls – Can a machine running a packet sniffer see what nginx is forwarding on localhost to a Flask app?

I want to serve a Flask application from my pc. Other machines in my network only should be able to consume the API. However, I wish to have the communication between the other machines and the API secured using https with a self-signed certificate. For this reason (because serving Flask with waitress does not support https on its own), I am using nginx on the same machine as a proxy so that it can handle https.

My question is:
If someone connects to my network, let’s say via wifi, and runs a packet sniffer like Wireshark, will they be able to see what is being transferred between the legitimate clients of the app and the app?

When running Wireshark on the same machine as the application, I see the request and all of its contents. I believe this is because it is sniffing on localhost and sees the forwarded http request (from nginx to the app). When running Wireshark on my laptop, I don’t see the http request. Can someone confirm this is safe for my purposes?

Also: Can someone confirm that if nginx were to run on a separate local machine, then the http request would be exposed again?

EDIT: Here is the nginx configuration I have

server {
    listen 443 ssl;

    ssl_certificate /etc/nginx/sites-available/nginx-selfsigned.crt;
    ssl_certificate_key /etc/nginx/sites-available/nginx-selfsigned.key;


    location / {

        proxy_set_header X-Real-IP $remote_addr;


server {
  listen 80;


  return 301 https://$server_name$request_uri;

formal languages – Turing machine that accepts $L = {a^{n^2}|ngeq 1}$

formal languages – Turing machine that accepts $L = {a^{n^2}|ngeq 1}$ – Computer Science Stack Exchange

formal languages – Turing machine that accepts 𝐿={𝑎𝑛2|𝑛≥1}

I have the following language:

$ 𝐿={𝑎^𝑛^2|𝑛≥1}

Hey i have been stuck on this problem for a few days now and even going through sample problems in my textbook as well as sample solutions i cant figure out how to make this turning machine to work.

I know it may be a vague question but i really could use some help figuring this one out.

Thanks in advance!

Has the Time Machine option to “”Delete all backups of” disappeared in Big Sur?

I have a folder that gets filled with large files that I want Time Machine to remember while retaining the option of regularly forgetting these large files. For this and up until Catalina I would regularly enter Time machine, go to this folder and use the command Delete all backups of... (see for instance the screen capture of @Inder ‘s answer in this thread). As of my recent upgrade to Big Sur I no longer see this contextual menu option.

Is it gone from Macos for good? Is there an alternative that does not involve under-the-hood sudo-type terminal surgery?


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