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Installation

Update Package Index​

Before installing any package, it's recommended to update the package index to ensure you have access to the latest available packages and their dependencies

sudo apt update

Install Apache​

Use the following command to install the Apache package

sudo apt install apache2

Verify Installation​

After the installation is complete, you can verify if Apache is running by accessing the default Apache landing page in your web browser. Open a web browser and navigate to http://localhost or http://server_ip_address.

If you see the Apache default landing page, it means the installation was successful

Managing Apache Service​

Apache is installed and runs as a system service. You can manage the Apache service using the following commands

Start Apache service
sudo systemctl start apache2
Stop Apache service
sudo systemctl stop apache2
Restart Apache service
sudo systemctl restart apache2.
Check Apache service status
sudo systemctl status apache2.

Firewall​

If you have a firewall enabled on your Ubuntu system (such as UFW), you'll need to allow incoming HTTP and HTTPS connections. Run the following commands to allow Apache through the firewall

sudo ufw allow 'Apache'
sudo ufw allow 'Apache Full'

These commands will open ports 80 (HTTP) and 443 (HTTPS) for incoming traffic