BC: All copyrights reserve to Karla Monroy Flores American School of Tampico Tampico, Tamaulipas, Mexico. 2011
FC: The computer Network | Mail Server
1: Computer networks are easily found in any place. Today you are going to see how a computer network works when you use mail server. | Ready to learn? Well, here we go
2: Everything starts when you are using your computer and send an email through your mail server, | First you use your Internet browser and type the URL of the mail server you are entering. | URL
3: Internet Browser
4: The information you type as the URL is send in packages call packages IP adress. This packages are send through the UTP cables and reach the router switch. | UTP cables
5: Router Switch
6: Fiber Optic Cables | SITE
7: The Router Switch change the cable the packages are traveling to a fiber optic. | Through the fiber optic cables the packages reach the SITE.
8: Mail Server | When the package arrives to the site it goes to the mail server.
9: After the mail server validates your request, the package is send to the firewall. | Firewall
10: The firewall aproves the package for security issues and sends the package through another Router Switch. | The Router Switch sends the package through fiber optic cables until it reach the Internet.
11: Router Switch
12: The Internet sends the packages thorugh another firewall to aprove the information. | If the package is aprove, the firewall sends the information to the web server.
13: Web Server
14: The web server is the one that brings back to your computer the information you requested that in this case was sending an e-mail. | From the web server every step starts again but backwards.
15: From web server the package goes to the firewall and back to the internet.
16: The internet sends the package through fiber optic cables, to the router switch and then through another firewall.
17: From the Firewall it gets to the mail server.
18: When the package lives the mail server it goes through the site again that send them through the fiber optic cables that reach the router switch.
21: From the router switchthe package goes through the UTP cables and reach the place were package information is brought out.
22: Then the information passes your NIC and arrives to your screen and it is display.
23: All these occurs in seconds. Everytime you send an email this is the process that your computer goes through to send it.