Even though easy and nicely supported in the sector, RIP for IP suffers from some issues inherent to its original LAN-based style. Many of these port numbers are nicely-identified for instance, the port for sending mail is port quantity 25, and the port for accessing internet web sites is port 80. Some of you may perhaps have noticed this in the address bar of your browser: when the domain name is followed by a colon, and then a number (:81/…), this tells the browser to use that port instead of the default port (which is 80 for HTTP).
There are nevertheless some loose ends to tie up. 1st, you could have questioned how a single machine can be responsible for all of ‘s e-mail, and you would be entirely appropriate to do so. In practice, DNS will often return numerous addresses when a certain domain name is looked up, and the internet browser merely chooses one particular of them at random.
TLS is mainly transparent to users, as the browser runs it automatically just beneath HTTP, where it silently encrypts all the text before it is sent on the network in between the server and the client (and vice-versa). The browser won’t be capable to resolve the domain name and you will probably get a nasty dialog box explaining that a …Continue reading