![]() You wouldn't expect that to successfully dial, would you? You use the book to look up the right number, then dial that number on the phone - it's a multi-step process. Pointing your web browser directly at 8.8.8.8 is like smacking the telephone book with the phone handset. ![]() You can access 8.8.8.8, but it only responds to the right questions.Ī DNS server is akin to a telephone book. However, they still need to have IP addresses in order to transfer anything through the internet at all.) (Finally, a system could have an IP address and not offer any service at all – like your computer or phone, which mostly just act as clients and access services hosted elsewhere. Your browser specifically asks to connect to the server at port 443 the server recognizes it as a protocol that it doesn't provide and rejects the connection entirely before the browser could even begin to send the real request. ![]() Generally, all such protocols have different "port numbers" assigned to them – HTTPS has 443, DNS has 53, and so on. Websites are accessed using the HTTP protocol, but you could find many examples of services that run over the internet, but don't use the web nor HTTP (after all, the internet had been in use for a good decade before the web was invented) – DNS is one such service, email is another, and most online games aren't actually web-based either. Or in other words, the internet's job is to transfer data around between IP addresses, and a website is just one specific kind of data (in a similar way that news broadcasts are just one of many things that can be shown on TV). "Web" isn't exactly the same thing as "internet" – it is just one of many different services that happen to be carried over the internet. 8.8.8.8 is a public IP address, if it's not a webpage, what would it be? ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |