SSL Checker Tool

Reading Time: 4 minutes

The security of your website is vital to the success of your Internet business. One way you can protect your data (and your customers) is through the use of encrypted communication protocols. Secure Socket Layer (or SSL) was the original method of providing for basic encryption between servers and clients. The industry mostly uses Transport Layer Security (or TLS) protocols now, but the process is basically the same, and most users refer to this kind of encryption by the old name: SSL.  As part of our Web Hosting Toolkit, Liquid Web provides and SSL Tool to help you verify that your SSL is installed correctly and up-to-date.  Below is an insight on how to use this tool and as well as some core concepts and certificates types to know when dealing with SSL.

 

SSL Certificate Checker

You’ll want to confirm that everything is functioning correctly on the server once you’ve successfully ordered and installed your SSL. At this time, you’ll want to check on your domain SSL’s to confirm expiration dates, covered subdomains, or other information. While you can use various third-party SSL checkers on the Internet, Liquid Web makes gathering this information about your domain simple. Just go to the Liquid Web Internet Webhosting Toolkit page and click on SSL Tool.

How Do I Check If My SSL Certificate is Valid?

Enter your domain name in the box provided and click on Submit. You can enter either your primary domain name (like mydomain.com) or any of the subdomains you may have created SSL certificates for (like blog.mydomain.com). If an SSL certificate is installed on the server for the domain, the page will display the status of the certificate and additional information.

In this example, you can see that the certificate is valid and trusted by browsers and that the tested domain matches the certificate.

You can also see which Certificate Authority issued the certificate and the dates for which the certificate is valid.

Finally, you can see which signing algorithm was used to generate the certificate (indicating how complex and secure the certificate is) and which domains and subdomains are covered by the certificate.

How SSLs Work

SSL connections work through a series of tools that exist on your server and on a client’s web browser. At the simplest level, the server and a client computer exchange information and agree on a secret “handshake” that allows each computer to trust the other computer. This handshake is established through the use of private and public SSL certificate keys. The private key resides on the server, and the public key is available to a client computer. All information passed between the computers is encoded and can only be decoded if the keys match. These keys are generated by a Certificate Authority (like GlobalSign) and can vary in complexity and expiration date. These matched keys exist to prevent what are known as “man in the middle” attacks when a third-party intercepts the Internet traffic for the purpose of stealing valuable data (like passwords or credit card information). Because the third-party doesn’t possess the matching keys, they will be unable to read any of the intercepted information.

By using a trusted certificate your website user can enter their information with full confidence that their data is safe. Certificate Authorities only grant SSL certificates to operators who can prove that they are the legitimate owner of a domain and that the domain is hosted on the server for which the certificate is being issued. This proof is usually obtained by modifying the DNS records for a domain during the verification process of the certificate ordering transaction. To learn more about how to order an SSL through your Liquid Web account, see How To Order or Renew an SSL Certificate in Manage.

 

Types of SSL Certificates

While SSL certificates all provide the same essential functions, there are several different types of certificates to choose from. You’ll want to establish which certificate meets your needs before you decide to order one for your domain. The types we’ll discuss here are Self-Signed Certificates, Standard Domain Certificates, Wildcard Certificates, Extended Validation Certificates.

Self-Signed Certificates

Most servers have the capability of generating a Self-Signed SSL certificate. These certificates provide the same kinds of encrypted communication that certificate provided by Certificate Authorities provide. However, because they are self-signed, there is no proof that the server is the “real” server associated with a website. Many control panels use self-signed certificates because the owner of the server knows the IP address of the server and can trust that they are connecting to the correct site when using that IP address. The advantage of self-signed certificates is that they are easy to generate and are free to use for as long as you want to use them.

Standard Domain Certificates

If you only need to secure a single domain or subdomain, a standard domain SSL certificate is appropriate. Standard certificates are generally the least expensive option from Certificate Authorities and are designed to cover one domain or subdomain (generally both domain.com and www.domain.com are covered by a standard certificate).

Wildcard Certificates

If you have multiple subdomains, you may be able to save time and money by getting a wildcard SSL certificate. Wildcard certificates cover a domain and all of its subdomains. For instance, if you have a domain website that also has a mail subdomain, a blog, a news site, and a staging site that you want to be protected by SSL communication, a single wildcard would protect all of the sites.

Note
A wildcard certificate will only protect one level of subdomains. So, blog.mydomain.com is covered, but new.blog.mydomain.com would not be covered.
Extended Validation Certificates

SSL certificates are generally issued to companies that can prove they have the right to use a domain name on the Internet (normally because they can modify the DNS records for that domain). While that level of verification is sufficient for most companies, you may need to have additional evidence that your company is a reliable entity for business purposes. Organizational SSL certificates require additional vetting by a Certificate Authority, including checks about the physical location of your company and your right to conduct business. Organizational SSL details can be visible on your website if you install a Secure Site Seal. Additional vetting is available for companies that choose Extended Validation SSL certificates. Extended Validation processes are often used by banks and financial institutions to provide extra reassurance to their customers that their website is legitimate. EV SSLs will turn the address bar of the client’s browser green and display the company’s name on the right side of the address bar.

If you need help determining which type of SSL is right for your business, chat with our Solutions team for additional information.

Now that you’ve checked the details of your SSL certificate and confirmed that all of the information is correct, you’ll be sure that the communications between your server and your customer’s computers are secure as that information travels over the Internet. For more information about improving the overall security of your server, see Best Practices: Protecting Your Website from Compromise.

 

How to Setup Let’s Encrypt on Ubuntu 18.04

Reading Time: 3 minutes

Sites with SSL are needed more and more every day. It’s ubiquitious enforcement challenges website encryption and is even an effort that Google has taken up. Certbot and Let’s Encrypt are popular solutions for big and small businesses alike because of the ease of implementation.  Certbot is a software client that can be downloaded on a server, like our Ubuntu 18.04, to install and auto-renew SSLs. It obtains these SSLs by working with the well known SSL provider called Let’s Encrypt. In this tutorial, we’ll be showing you a swift way of getting HTTPS enabled on your site.  Let’s get started! Continue reading “How to Setup Let’s Encrypt on Ubuntu 18.04”

Load Balancing Techniques and Optimizations

Reading Time: 8 minutes

The hosting world’s bread & butter solution for providing high availability and redundancy is load balancing. There are many different use cases for a Load Balancer (LB). It is important to know how to effectively manage your LB configuration so that it performs optimally in your environment.  The proceeding article will review some of the common practices that, when adhered to, provide a smooth and seamless high availability website/application through the use of load balancing. Continue reading “Load Balancing Techniques and Optimizations”

How to Use Let’s Encrypt with Cloudflare

Reading Time: 3 minutes

Cloudflare is an excellent and well-known content delivery network. A CDN can increase site speed by utilizing Cloudflare’s global caching network to deliver content closer to a visitor’s location. You can also easily attach Cloudflare as an add-on product to your existing Liquid Web server, but there are some configurations to consider. Continue reading “How to Use Let’s Encrypt with Cloudflare”

Transfer an SSL to Ubuntu 16.04 or CentOS 7

Reading Time: 7 minutes

SSL certificates have become a de facto part of every website. If you don’t yet have an SSL on your site to encrypt data, you should. Rather than showing an extra layer of security on sites protected by SSL, modern browsers instead now display a warning when a website does not have an SSL, essentially requiring sites to maintain their positive image.

When moving from one server to another, what needs to happen to your SSL to maintain your secure status? We’ll cover the basics for transferring traditional and Let’s Encrypt SSLs to Ubuntu 16.04 and CentOS 7.

Note:
This article will address SSLs in Apache specifically, but the same concepts apply to any service that supports SSL encryption.

Can SSLs be transferred between servers?

Continue reading “Transfer an SSL to Ubuntu 16.04 or CentOS 7”

SSL vs TLS

Reading Time: 4 minutes

You may have first heard about TLS because your Apache service needed to be secured using TLS for a PCI scan (Payment Card Industry: PCI scans are a standard to ensure server security for credit card transactions). Or maybe you noticed that your SSL also mentions TLS when you are ordering the certificate. Beyond where you heard the names, the question is, what is this mysterious TLS in relation to SSL and which of the two should you be using? Continue reading “SSL vs TLS”

How to Configure Your Liquid Web VPN

Reading Time: 2 minutes

Liquid Web offers a free Virtual Private Network (VPN) user with every account. A VPN uses encryption to secure your computer’s connection to the Internet and guarantees that all of the data you’re sending and receiving to the Liquid Web network is secured from any potential prying third parties.

Be security-minded.

A VPN will secure and encrypt inherently insecure communications (such as HTTP, FTP, SMTP, etc.) to the Liquid Web network, even while using an untrusted public network.

Who uses a VPN? People just like you.

The Professional: Whether working from a permanent home office, or simply getting a few important projects done from home, a VPN will provide secure access to files stored on your dedicated server.

Remote Developers: Do you have a fleet of remote WordPress, Joomla, PHP, Drupal, or other developers that need secure access to your hosting infrastructure? If so, a VPN is not only perfect, but should be required.

The World Traveler: Working on your top secret startup from abroad? Or perhaps uploading photos from your most recent adventure? Prevent snooping by using a VPN.

Once you’re logged into your Liquid Web Manage account, follow the steps below to create a VPN user and get connected! Continue reading “How to Configure Your Liquid Web VPN”