In this lab, we will install Apache web server, and then start it and enable it to start at boot. We will then install and configure the firewall. We will also open up two ports: port 22 and port 80. We need to open up port 22 because we will be connected via SSH and don’t want to enforce firewall rules before we allow our own traffic — otherwise, we’ll lock ourselves out. It is important to open port 22 before applying any firewall rules, as opening port 80 means we can access the Apache demo page from outside and confirm our Apache server is functional and accessible from the outside world.
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- Install, Start, and Enable Apache Web Server
Install Apache web server:
sudo yum install httpdStart Apache web server:
sudo systemctl start httpdCheck the status of Apache web server:
sudo systemctl status httpdEnable Apache to start at boot:
sudo systemctl enable httpd
- Install Start and Enable `firewalld`
Install
firewalld:sudo yum install firewalldStart
firewalld:sudo systemctl start firewalldCheck the status of
firewalld:sudo systemctl status firewalldEnable
firewalld:sudo systemctl enable firewalld
- Implement Permanent Firewall Rules to Allow Traffic on Ports 80 and 22
Open port 80:
sudo firewall-cmd --add-port=80/tcp --permanentOpen port 22:
sudo firewall-cmd --add-port=22/tcp --permanent
- Re-Log in via SSH to Confirm Your Firewall Configuration Is Correct and Access the Web Server Default Page via the Browser
Log out and log back in via SSH:
exitssh cloud_user@<SERVER_PUBLIC_IP>Open a new web browser tab, and navigate to the following URL:
http://<SERVER_PUBLIC_IP>
