What is SSL and why it is used?

2022-07-22 18:00:03

What is SSL and why it is used?

SSL stands for Secure Sockets Layer and, in short, it's the standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems, preventing criminals from reading and modifying any information transferred, including potential personal details.

What is SSL when setting up email?

SSL stands for Secure Sockets Layer, and is a protocol that protects communication over the internet. We recommend that you use SSL when you set up your email account in an email application to protect your data.

What is SSL example?

SSL provides a secure channel between two machines or devices operating over the internet or an internal network. One common example is when SSL is used to secure communication between a web browser and a web server. This turns a website's address from HTTP to HTTPS, the 'S' standing for 'secure'.

Is SSL same as HTTPS?

What is the difference between SSL and HTTPS? HTTPS is a combination of the Hypertext Transfer Protocol (HTTP) with either SSL or TLS. It provides encrypted communications and a secure ID of a web server. SSL is simply a protocol that enables secure communications online.

Which is more reliable SSL or HTTPS?

HTTPS (Hyper Text Transfer Protocol Secure) is the secure version of HTTP where communications are encrypted by SSL/TLS. HTTPS uses TLS (SSL) to encrypt normal HTTP requests and responses, making it safer and more secure.

Is SSL always TCP?

SSL/TLS typically runs on top of TCP, but there is nothing to stop you from running it on UDP, SCTP or any other transport layer protocol. As a matter of fact HTTPS over TCP and UDP are both defined as "well known" by IANA and have reserved port numbers.

Which port is used by HTTPS?

Port 443

The Port 443, a web browsing port, is primarily used for HTTPS services. It is another type of HTTP that provides encryption and transport over secure ports.

Is SSL still used?

SSL has not been updated since SSL 3.0 in 1996 and is now considered to be deprecated. There are several known vulnerabilities in the SSL protocol, and security experts recommend discontinuing its use. In fact, most modern web browsers no longer support SSL at all.

How SSL handshake happens?

The SSL handshake process is as under: After building a TCP connection, the client started the handshake with sending information like SSL version, cipher suites, and compression method. The server then checks for the highest SSL version that is supported by both of them.

What is SSL TLS handshake?

The SSL or TLS handshake enables the SSL or TLS client and server to establish the secret keys with which they communicate. This section provides a summary of the steps that enable the SSL or TLS client and server to communicate with each other: Agree on the version of the protocol to use.

How do I establish an SSL connection?

How an SSL connection is established

  1. The client sends a request to the server for a secure session. ...
  2. The client receives the server's X. ...
  3. The client authenticates the server, using a list of known certificate authorities.
  4. The client generates a random symmetric key and encrypts it using server's public key.

Mar 16, 2017

What is the difference between SSL and TLS?

SSL is a cryptographic protocol that uses explicit connections to establish secure communication between web server and client. TLS is also a cryptographic protocol that provides secure communication between web server and client via implicit connections. It's the successor of SSL protocol.


HTTPS today uses Transport Layer Security, or TLS. TLS is a network protocol that establishes an encrypted connection to an authenticated peer over an untrusted network. Earlier, less secure versions of this protocol were called Secure Sockets Layer, or SSL).

What OSI layer is HTTPS?

Which layer of the OSI model do SSL and TLS belong to? Hey Guys, Imagine that you are accessing a secure web page, you immediately notice that you are using HTTPS (HTTP is an application layer protocol) ( which uses TCP port 443 at the transport layer).

How do you check if the certificate is SSL or TLS?


  1. Launch Internet Explorer.
  2. Enter the URL you wish to check in the browser.
  3. Right-click the page or select the Page drop-down menu, and select Properties.
  4. In the new window, look for the Connection section. This will describe the version of TLS or SSL used.

Mar 14, 2022

What is the difference between tls1 0 and tls1 2?

Based on TLS 1.1, TLS 1.2 contains improved flexibility. One of the primary goals of the TLS 1.2 revision was to remove the protocol's dependency on the MD5 and SHA-1 digest algorithms.

How do I start TLS?

The StartTLS process

  1. The process begins with the Transmission Control Protocol (TCP) handshake to help both the email client and server identify each other.
  2. The server identifies with 220 Ready that the email client can proceed with the communication.

Mar 20, 2020

How do I renew my SSL certificate?

Renew an SSL/TLS certificate

  1. Step 1: Generate CSR. To renew an SSL/TLS certificate, you'll need to generate a new CSR. ...
  2. Step 2: Sign in to your account. Sign in to your CertCentral account.
  3. Step 3: Fill out the renewal form. ...
  4. Step 4: DigiCert issues the SSL/TLS certificate. ...
  5. Step 5: Install your renewed SSL/TLS certificate.

How long do SSL certificates last?

Starting on September 1st, SSL/TLS certificates cannot be issued for longer than 13 months (397 days).

Where are SSL certificates stored?

The default location to install certificates is /etc/ssl/certs . This enables multiple services to use the same certificate without overly complicated file permissions. For applications that can be configured to use a CA certificate, you should also copy the /etc/ssl/certs/cacert.

Where can I get SSL?

How to Get an SSL Certificate

  • Verify your website's information through ICANN Lookup.
  • Generate the Certificate Signing Request (CSR).
  • Submit your CSR to the Certificate authority to validate your domain.
  • Install the certificate on your website.

Dec 15, 2021