The sender is the hotel, and the recipient sees that it comes from the hotel. Mails sent from the hotel go to the lobby, which then send the mail out. The hotel has one address, but many rooms internally.
I won't go into detail, but think of it like a hotel lobby. How is this possible, if above I said each address corresponds to one computer? If you are at home and have multiple devices at hand, you can search for your external IP address and you will see that all of them likely have the same address. That means your computer could be running a Minecraft server on port 25565, an Unreal Tournament 2004 server on port 7777 and a web server on port 80 and 443. This is done so that a computer can have many different applications running at the same time, with each listening to different port. a Minecraft server), that application listens to a specific port, such as 25565.Ī packet sent to a computer has to contain it's address, but also the port which corresponds to the application that is supposed to handle the packet. In order to communicate with a specific application on that computer (e.g. This address represents one computer 1 somewhere on the internet. A typical IPv4 address will look something like 173.194.222.139. The internet works based on IP addresses.
To answer your question bluntly, " No, it would not make you more secure." However, your question shows that you are relatively new to networking and security, so I would like to expand my answer a bit, to give you some context for it.
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