Skip to main content

Setting Up SSL Certificate

Nowadays, an SSL certificate which is usually used for HTTPS connections become pretty important. Even Google starts to give a ranking boost to secure HTTPS/SSL sites. There are several cheap certificates that you can buy like Comodo PositiveSSL. I usually buy cheap certificates from Namecheap.com which provides SSL certificates as low as $4/year. After you buy the certificate, you need to set up your server. Here are the steps to set up an SSL certificate on your server.

1. Purchase the certificate
You can buy the certificate from Namecheap.com. After you buy it, you need to activate your certificate by providing your generated CSR file.

2. Generate private key and CSR file
In a Linux server, you can run the following command on the terminal to generate a private key and CSR file.

$ openssl req -new -newkey rsa:2048 -nodes -keyout mydomain.com.key -out mydoain.com.csr 

When you run the command, you will be asked for Country ID, domain name, registrant email, etc. For the domain name, you have to fill it with a valid domain name that will use the certificate. For the registrant email, it is better if you use your domain email account e.g. yourname@yourdomain.com.
After you run the command, there will be mydomain.com.key (private key) and mydomain.com.csr (CSR) in your current directory.

3. Activate your certificate
Go to your purchase lists and choose to activate your certificate. Copy contents of your CSR file then paste it on provided CSR box on the website. The system will generate some certificate files. You can choose to get the certificate files by email. For Comodo certificate, you will get four files including AddTrustExternalCARoot.crt (Root CA), COMODORSAAddTrustCA.crt (Intermediate CA), COMODORSADomainValidationSecureServerCA.crt (Intermediate CA), and www_mydomain_com.crt (SSL certificate).

4. Install SSL certificate
Copy all certificate files to your server. To make your SSL certificate fully works for your domain, you need to combine the CA certificate into a single certificate. If you access your domain only from a browser, it's not necessary to combine the certificates. If you want to make your SSL secured domain can be accessed by any services, you should combine the certificates. The order of combination files should be right as the following command.

$ cat www_mydomain_com.crt COMODORSADomainValidationSecureServerCA.crt COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt > mydomain.com.crt

After running the command, mydomain.com.crt will contain an SSL certificate and all CA certificates. You must keep your private key and SSL certificate secure by setting up read and write permission only for root and no permission for others.
To implement the certificate into a server application, you need to set appropriate configuration for the application. For example:
Nginx

server {
    listen 443;
    ssl on;
    ssl_certificate /path/to/ssl/mydomain/mydomain.com.crt;
    ssl_certificate_key /path/to/ssl/mydomain/mydomain.com.key;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ...
}

Gitlab Community Edition
For the Gitlab server, by default, you should store the certificate in "/etc/gitlab/ssl/" with a valid domain name for the file name. If your domain name in "/etc/hostname" is "server.mydomain.com", your private key or your SSL certificate should be named "server.mydomain.com.<key/crt>". It's because the "#{node['fqdn']}" configuration variable will be translated into your hostname.

nginx['ssl_certificate'] = "/etc/gitlab/ssl/#{node['fqdn']}.crt"
nginx['ssl_certificate_key'] = "/etc/gitlab/ssl/#{node['fqdn']}.key"

5. Additional step
Some server applications need a CA certificate bundle to perform an SSL connection. You can generate a CA bundle by performing the last command without an SSL certificate. The order of combination files should be right too.

$ cat COMODORSADomainValidationSecureServerCA.crt COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt > ca-bundle.crt

Comments

  1. Hey what a brilliant post I have come across and believe me I have been searching out for this similar kind of post for past a week and hardly came across this. Thank you very much and will look for more postings from you Get for more information buy certificate

    ReplyDelete
  2. Thanks for publishing such best knowledge with us. You are doing such a great job. This info is very helpful for everyone. Keep it up. Thanks.Read more info about approval certification

    ReplyDelete

Post a Comment

Popular posts from this blog

Configuring Swap Memory on Ubuntu Using Ansible

If we maintain a Linux machine with a low memory capacity while we are required to run an application with high memory consumption, enabling swap memory is an option. Ansible can be utilized as a helper tool to automate the creation of swap memory. A swap file can be allocated in the available storage of the machine. The swap file then can be assigned as a swap memory. Firstly, we should prepare the inventory file. The following snippet is an example, you must provide your own configuration. [server] 192.168.1.2 [server:vars] ansible_user=root ansible_ssh_private_key_file=~/.ssh/id_rsa Secondly, we need to prepare the task file that contains not only the tasks but also some variables and connection information. For instance, we set /swapfile  as the name of our swap file. We also set the swap memory size to 2GB and the swappiness level to 60. - hosts: server become: true vars: swap_vars: size: 2G swappiness: 60 For simplicity, we only check the exi

Rangkaian Sensor Infrared dengan Photo Dioda

Keunggulan photodioda dibandingkan LDR adalah photodioda lebih tidak rentan terhadap noise karena hanya menerima sinar infrared, sedangkan LDR menerima seluruh cahaya yang ada termasuk infrared. Rangkaian yang akan kita gunakan adalah seperti gambar di bawah ini. Pada saat intensitas Infrared yang diterima Photodiode besar maka tahanan Photodiode menjadi kecil, sedangkan jika intensitas Infrared yang diterima Photodiode kecil maka tahanan yang dimiliki photodiode besar. Jika  tahanan photodiode kecil  maka tegangan  V- akan kecil . Misal tahanan photodiode mengecil menjadi 10kOhm. Maka dengan teorema pembagi tegangan: V- = Rrx/(Rrx + R2) x Vcc V- = 10 / (10+10) x Vcc V- = (1/2) x 5 Volt V- = 2.5 Volt Sedangkan jika  tahanan photodiode besar  maka tegangan  V- akan besar  (mendekati nilai Vcc). Misal tahanan photodiode menjadi 150kOhm. Maka dengan teorema pembagi tegangan: V- = Rrx/(Rrx + R2) x Vcc V- = 150 / (150+10) x Vcc V- = (150/160) x 5

Setting Up Next.js Project With ESLint, Typescript, and AirBnB Configuration

If we initiate a Next.js project using the  create-next-app tool, our project will be included with ESLint configuration that we can apply using yarn run lint . By default, the tool installs eslint-config-next and extends next/core-web-vitals in the ESLint configuration. The Next.js configuration has been integrated with linting rules for React and several other libraries and tools. yarn create next-app --typescript For additional configuration such as AirBnB, it is also possible. First, we need to install the peer dependencies of eslint-config-airbnb . We also add support for Typescript using eslint-config-airbnb-typescript . yarn add --dev eslint-config-airbnb eslint-plugin-import eslint-plugin-jsx-a11y eslint-plugin-react eslint-plugin-react-hooks yarn add --dev eslint-config-airbnb-typescript @typescript-eslint/eslint-plugin @typescript-eslint/parser After that, we can update the .eslintrc.json file for the new configuration. { "extends": [ "airb

Installing VSCode Server Manually on Ubuntu

I've ever gotten stuck on updating the VSCode server on my remote server because of an unstable connection between my remote server and visualstudio.com that host the updated server source codes. The download and update process failed over and over so I couldn't remotely access my remote files through VSCode. The solution is by downloading the server source codes through a host with a stable connection which in my case I downloaded from a cloud VPS server. Then I transfer the downloaded source codes as a compressed file to my remote server through SCP. Once the file had been on my remote sever, I extracted them and align the configuration. The more detailed steps are as follows. First, we should get the commit ID of our current VSCode application by clicking on the About option on the Help menu. The commit ID is a hexadecimal number like  92da9481c0904c6adfe372c12da3b7748d74bdcb . Then we can download the compressed server source codes as a single file from the host.

Resize VirtualBox LVM Storage

VirtualBox is a free solution to host virtual machines on your computer. It provides configuration options for many components on our machine such as memory, storage, networking, etc. It also allows us to resize our machine storage after its operating system is installed. LVM is a volume manager in a Linux platform that helps us to allocate partitions in the system and configure the storage size that will be utilized for a specific volume group. There are some points to be noticed when we work with LVM on VirtualBox to resize our storage. These are some steps that need to be performed. 1. Stop your machine before resizing the storage. 2. Set new storage size using GUI by selecting " File > Virtual Media Manager > Properties " then find the desired virtual hard disk name that will be resized. OR , by running a CLI program located in " Program Files\Oracle\VirtualBox\VBoxManage.exe ".  cd "/c/Program Files/Oracle/VirtualBox" ./VBoxManage.exe list

Managing MongoDB Records Using NestJS and Mongoose

NestJS is a framework for developing Node.js-based applications. It provides an additional abstraction layer on top of Express or other HTTP handlers and gives developers a stable foundation to build applications with structured procedures. Meanwhile, Mongoose is a schema modeling helper based on Node.js for MongoDB. There are several main steps to be performed for allowing our program to handle MongoDB records. First, we need to add the dependencies which are @nestjs/mongoose , mongoose , and @types/mongoose . Then, we need to define the connection configuration on the application module decorator. import { MongooseModule } from '@nestjs/mongoose'; @Module({ imports: [ MongooseModule.forRoot('mongodb://localhost:27017/mydb'), ], controllers: [AppController], providers: [AppService], }) Next, we create the schema definition using helpers provided by NestJS and Mongoose. The following snippet is an example with a declaration of index setting and an o