STEPS OF THE PROJECT ////////////// 1- configuring AWS created security groups, set inboundary rule of port 80 to any ipv4 and port 22 for my ip created keypair to ssh into it created an EC2 instance with ubuntu as OS attached security group and keypair to it then opened vagrant and ssh into the EC2 instance /////////////// 2- Installing required packages first sudo apt-get update then sudo apt-get install apache2 mysql-server php libapache2-mod-php php-mysql to install necessary p> then started apache and sql and enabled it by sudo systemctl start apache2 sudo systemctl enable apache2 sudo systemctl start mysql sudo systemctl enable mysql

created index.html containing hello world using command echo "Hello World\!" | sudo tee /var/>
tested by writing http://54.152.82.35 on my web browser and it showed hello world!

created php file containing hello world using command echo "<?php echo 'Hello World!'; ?>" | sudo tee >
tested by writing http://54.152.82.35 on my web browser and it showed hello world!

/////////////////////// 3- configure MySql installed secure using sudo mysql_secure_installation logged in using root user sudo mysql -u root -p then created a user with a password, gave it privileges CREATE DATABASE web_db; CREATE USER 'web_user'@'localhost' IDENTIFIED BY 'StrongPassword123#'; GRANT ALL PRIVILEGES ON web_db.* TO 'web_user'@'localhost'; FLUSH PRIVILEGES; EXIT; /////////////////////////////// 4- change the website to use the database modified the php file index.php with new user of db to connect to apache server and show the ip sudo nano /var/www/html/index.php to open the file then wrote <?php $server = 'localhost'; $username = 'web_user'; $password = 'StrongPassword123'; $dbname = 'web_db';

$conn = new mysqli($server, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$time = date("Y-m-d H:i:s");
$ip = $_SERVER['REMOTE_ADDR'];

echo "Hello! Your IP is $ip. Current server time is $time.";
$conn->close();
?>

tested by writing http://54.152.82.35 on my web browser and it showed my ip and time

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github repo link : https://github.com/MohamedSayed16600/Set-up-a-Web-Server-on-EC2-instance-Linux-based

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sub-task 3:

1- IP address : it's a 32 bit logical address used in layer 3 responsible for end to end encapsulation, it's set either statically or given by DHCP there are private IPs for private lANs,WANs and public IPs for internet (public WAN)

2- MAC addresss: it's a 48 bit address printed on ROM , used to identify next hop , it differs from IP because it's layer 2 while IP is a layer 3

3- switches : it's a layer 2 device that only knows the next hop but not the final end, if doesn't know the MAC it floods it only learns the neighbouring MACs when they try to send something.

Routers: it's a layer 3 device that knows the next hop and the final end. it doesn't pass broadcasts. it's routing tables either defined statically or by a routing protocol

routing protocols: forming the routing tables in the router RIP v1 , IGRP : distance vector protocols - interior gateway protocols RIP v2 , EIGRP: advanced distance vector protocols - interior gateway protocols ISIS, OSPF : link state protocols - interior gateway protocols EGP, BGP : exterior gateway protocols

4-inside security group set inboundary rule of port 22, ssh, my IP