Computer Networks – How Do Web Browsers Discover the MAC Address?

While browsing through my manual, I discovered that if you want to access a particular web page, your web browser will find the IP address of the web server that hosts the web page and will try to connect to it. It will then transfer a copy of the web page to your computer so that you can view it.

However, my concern is … I discovered that the IP address allows sending data to the local network of the device, but so that the data can be sent to the device itself, the MAC address is required to transfer data from the local network to the device.

BUT, in my manual, it says nowhere how the web browser of the computer discovers the MAC address of the web server. It indicates that the computer is looking for the IP address of the web server using the Domain Name System (DNS).

So, how does the computer discover the MAC address of the server?

Answers would be much appreciated.

Moving Web Hosts – What to do with an email address?

I'm moving my WordPress / Cpanel website from Webhost 1 to Webhost 2.

I had a @Your domain.com with Webhos … | Read the rest of http://www.webhostingtalk.com/showthread.php?t=1777156&goto=newpost

Creating a Gmail filter to delete all emails sent to this Gmail address

I need to write a Gmail filter that deletes any incoming mail in my Gmail inbox addressed to this Gmail address. I have to make an exception for responses from the acceptance or denial of an invitation to a calendar.

This is what I have so far (I use an example of Gmail address and domain, hence the use of .invalid):

Matches: {to:richard.surname@gmail.invalid to:richardsurname@gmail.invalid} -from:google -filename:ics -filename:vcs
Do this: Delete it

Is there a better way to do this?

Additional information / Justification

I own my own domain (richard.invalid) that has a number of messaging aliases set up. One of them (me@richard.invalid) points to my Gmail address (richard.surname@gmail.invalid). When I reply to an email, Gmail is set to send emails from me@richard.invalid.

It works very well.

However, at least 10 people in the world give blindly richard.surname@gmail.invalid or richardsurname@gmail.invalid like their own e-mail address, even if they do not have access to it. After years of answering e-mails and trying to educate these people, I gave up and I would like to delete everything that is sent to these addresses.

The only problem I have is that Google Calendar always sends invitations from my Gmail address. So I have to add an exception to my filter to make sure the answers to them are not accidentally deleted. It's not ideal, but I only send invitations to my other half.

Since I own the domain for many years, I never send emails from richard.surname@gmail.invalid – I do not expect that a legitimate email will ever be sent.

I use the free version of Gmail, not GSuite.

Hiding the Safari address bar in iOS 13. Workaround for the minimal interface?

I know that there have been many articles on this subject, but I still have no solid answer. With the next iOS 13, I want to know if it is possible to hide the URL address bar? Our product uses the Safari native browser to view PDF files. However, I do not want the URL to be displayed (because our documents are stored in Firebase, and I do not want our Firebase URI address to be displayed).

I have found this link (among many others) that talk about the minimal interface of Apple (used in iOS 8), but it seems to have been removed. Any thoughts on how to use something similar in iOS 13? An alternative maybe?

https://stackoverflow.com/questions/24889100/ios-8-removed-minimal-ui-viewport-property-are-there-other-soft-fullscreen

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How is HttpResponse mapped in case of dynamic IP address?

  1. I have dynamic IP provided by ISP. Say IP is x
  2. I type google.com in the browser. The http request goes to the Google server
  3. IP goes to Y.
  4. How is the http response sent back to my laptop / laptop when the IP went from X to Y?

Does Google continue to send to X, and does the black-and-white NAT layer play X-to-Y?

How can I pay back the money I sent to an address?

It depends on who sent you (suppose that's a trader) and what software they use. Some merchant applications may allow reuse of the address so that they can still receive funds.

A. They used a merchant application that only allows the address to be used once: I guess you're out of luck. If this happens, the bitcoin you sent will essentially be delivered to the developers of commercial applications (no one will be sent unless the address is unclaimed, which is unlikely in this situation) (Bitcoin is a one way transaction, once sent, it is gone unless the target reimburses you directly)

B. They use a merchant application that allows several uses of address or even better a bitcoin wallet: you can ask them to check the previous address and see if additional funds are added and possibly refund on request.

Google search index listing the IP address of my old server instead of my domain name

This question already has an answer here:

My website, two years old, has been indexed and the search results have been listed as normal by domain name in Google search results for a long time. However, it has recently changed the IP address of the server, which may not be the cause, but Google now lists some of my pages under my old IP address 12.34.56.789/contents/my- page-here in their search results, so my pages under his domain as any one of this millennium do it by default.

How can I solve this problem because Google ruins my brand by indexing dead links?

And how not to live in fear of that in the future? Domain names exist so that we can change IPs.

bitcoind – Get the UTXO Bitcoin address created by rpc importprivkey without retrying, like all other applications

For some reasons, I have to use a rpc node to manage the portfolio at this point. In the near future, I will modify the stream in order to use the library to create addresses, store privatekey in the database and create a raw transaction. This means that I will use the RPC node for broadcast only, without depending too much on it. But I need time, so I'm going to divide that time into a few parts. I will start by creating and storing the address:
I have both the hex private key and the wif key, can I use importprivkey import the wif key to the rpc node without rescan because i have a big request to contact rpc. If these addresses are fresh, it's a very nice scenario, each new entry will automatically search UTXO using listunspent command to check.
Otherwise, in the worst case, for maintenance or backup, I import an address containing the old UTXO and I want to recover these UTXO to addresses without using rescan order (it takes a lot of time), like other APIs, just put the address and get the UTXO in the blink of an eye.
https://testnet.blockexplorer.com/api/addr/myzhMVXT39L7nnco6TtJ2a7sYaEo8ixT4Q/utxo
Is there a way to extract the old UTXO to address it in the RPC node without further analysis? Because these APIs are a very fast response, I think that they do not use new analysis. For the long run, use other api's not good for my project, I use version 0.16 (I know it's very old but the project needs some time to change it slowly and carefully), thank you very much for your help.