Deploying a Web Server using AWS EC2 and using Domain Name, DNS and its working process.

 What is DNS?

DNS is a crucial technology used in computer networking and the internet is called DNS, or Domain Name System. Its principal function is to convert human-friendly domain names into IP (Internet Protocol) addresses, which are digits that computers use to recognize one another on a network. This translation is required because people can remember and utilize domain names like “www.example.com” far more easily than they can a large string of digits like “192.168.1.1.”

Let’s see step by step how DNS works

  1. User Requests: A user’s computer must discover the corresponding IP address in order to connect when they type a domain name (such as www.example.com) into a web browser or click on a link.
  2. Local DNS Resolver: The user’s computer initially verifies whether the IP address for the requested domain is already stored in its local DNS resolver cache. The resolver moves on to the following stage if the data is either not in the cache or has expired.
  3. DNS Query: A DNS request is sent to a DNS server by the local DNS resolver. An internet service provider (ISP), a public DNS service like Google DNS (8.8.8.8), or a private DNS server within a company could all run this server.
  4. Iterative Resolution: The local DNS resolver will ping other DNS servers if its DNS server doesn’t have the necessary IP address details. Each DNS server in this repeated process either provides the solution or directs the resolver to another DNS server that might have the data. Until the resolver either obtains the IP address or concludes that the domain doesn’t exist, this process continues.
  5. Caching: After obtaining the IP address, the resolver keeps it in its cache for a predetermined period of time (TTL, or Time to Live). For websites that are regularly accessed, this caching helps eliminate the need for repetitive DNS queries.
  6. Response: The user’s machine can then use the IP address to connect to the specified web server after the local DNS resolver gives it to it.
Source: www.cloudflare.com

Deploying Web server using AWS

Let’s first launch an EC2 instance with Amazon Linux or, preferable, Ubuntu through the AWS EC2 console.

EC2 instance

Generate a key pair as shown below.

Key-pair

Make sure that you enable HTTPS and HTTP traffic in firewall security groups under Network Settings as shown below.

Security groups

Make other adjustments in accordance with your needs, such as storage and Amazon Machine Image (AMI).
Click “Launch Instance” once all of the configuration has been completed.
Once the AWS server is running, click on connect.

Instance

Selecting SSH will now offer information similar to what is seen below.

SSH

Execute the chmod command after copying it to the directory containing the key file. Copy the SSH command, and then use SSH to connect to the server.

SSH connection

Once the connection is successful, run the update command and the upgrade command.

sudo su
apt-get update
apt-get upgrade

update
upgrade

If a screen as shown below pop ups, select “Ok” and click Enter.

Daemons

Installing apache2 using apt command.

apt install apache2

apache2 installation

If the screen below pops up select “Ok” and click on Enter.

Daemons

Check the status of apache2 as shown below.

systemctl status apache2

apache2 status

Now paste the Public IP of the instance in a browser make sure a similar page as shown below will appear.

Apache2 default page

Now change the directory to /var/www/html and delete index.html file, and clone your git hub repository and move the files in cloned file to /var/www/html as shown below.

/var/www/html
cloning git repository

If the project file is in your local system and want to send it the remote server use scp command to send files to remote server.

Transferring using scp

Here with scp command as follows:
scp -i <key-file-name> -r <project-directory> <username>@<Public IPv4 DNS>:<directory>

Refresh the website that was previously accessible via the server IP to see your webpage as specified in your index.html file, as displayed below.

Now if you have domains from the providers like GoDaddy, Cloudflare, Namecheap and go to DNS settings and add records as shown below, where the IPs are server Public IP.

DNS management in Cloudflare

Now enter the domain name into a web browser to see the same outcome as when you entered the IP address.

Subscribe to our YouTube channel. https://www.youtube.com/@CyberToolGuardian/featured

Follow us on Instagram.
https://instagram.com/cybertoolguardian


Comments

Post a Comment

Popular posts from this blog

Zeek Installation in Ubuntu

Image
What is Zeek? An open-source protocol analyzer and network security monitoring tool, Zeek was once known as Bro. It is intended to assist enterprises with real-time network traffic monitoring and analysis, offering information on network activity, potential security risks, and performance concerns. Due to its effectiveness in swiftly capturing and processing network data, Zeek is especially well-liked among cybersecurity experts and network managers. How to install Zeek in Ubuntu? Update and upgrade the Ubuntu using apt. sudo apt-get update sudo apt-get upgrade Download the Zeek source code from the official website ( https://zeek.org/get-zeek/ ). Zeek offical download page Install dependencies using the below command. sudo apt-get install cmake make gcc g++ flex bison libpcap-dev libssl-dev python3-dev swig zlib1g-dev Dependencies installation Once all the dependencies are installed change the directory to the path where the Zeek source code file is downloaded and unzip the file. cd D...
Read more

What is ELK and Installing ELK stack (elasticsearch, logstash, kibana) in Ubuntu

Image
   What is ELK Stack The ELK stack is a collection of three open-source tools — Elasticsearch, Logstash, and Kibana — that work together to collect, store, and analyze data. Here is how each tool works: Elasticsearch : Elasticsearch is a search and analytics engine that provides a distributed, real-time search and analytics platform. It stores data in a distributed index, which allows for fast, real-time search and analysis of data. Elasticsearch is highly scalable, and it can handle a large volume of data with ease. Logstash : Logstash is a data pipeline that collects, filters, and transforms data from different sources before sending it to Elasticsearch. It can collect data from different sources such as log files, databases, and message queues. Logstash can also perform data transformation and filtering to ensure that only the relevant data is sent to Elasticsearch. Kibana : Kibana is a data visualization tool that allows users to create dashboards, visualizations, and repo...
Read more

Sending Zeek logs to ELK using Filebeats

Image
Before sending logs we must modify local.zeek file and add the below line at the end of the file. @load policy/tuning/json-logs.zeek Use the find command to find local.zeek file. find / -name local.zeek local.zeek path Now copy the path and edit the file using nano and add the line. local.zeek Save and exit from editor, now check the configuration of zeekctl sudo zeekctl check zeekctl check Once the you get zeek scripts are ok, deploy zeekctl sudo zeekctl deploy zeekctl deploy Go to the zeek logs path directory which is /usr/local/zeek/logs/current. Check if logs are generated properly. logs Go to Kibana dashboard head over to integration section and search for zeek, in the integration page on bottom right go to “Also available in Beats”. You will be redirected to Filebeats Zeek integration page. Copy the commands from the Step1 and open new terminal window and run the commands. Which will download and extract the filebeats. Now edit the filebeat.yml file, change the paths to the zeek ...
Read more