Secure Sockets Layer (SSL), are cryptographic protocols designed to provide communication security over the Internet. They use X.509 certificates and hence asymmetric cryptography to authenticate the counterparty with whom they are communicating, and to exchange a symmetric key. This session key is then used to encrypt data flowing between the parties. This allows for data/message confidentiality, and message authentication codes for message integrity and as a by-product, message authentication. Several versions of the protocols are in widespread use in applications such as web browsing, electronic mail, Internet faxing, instant messaging, and voice-over-IP (VoIP). An important property in this context is forward secrecy, so the short-term session key cannot be derived from the long-term asymmetric secret key.
WestNIC provides commercial grade 1 year SSLs free of charge. You can secure e-commerce application, support desk, chat or anything that require secure communication between customer/user and your website. However, please note that dedicated SSL doesn't encrypt data on the server by itself, it only provides secure connection between user and server. If you're planning to store sensitive data, please consult script vendor for encryption options / data security.
Free dedicated security certificates work same way as paid ones, however, it's good idea to purchase SSL for longer period. For example, you can purchase PositiveSSL for 5 years. Free dedicated SSLs expire without any warning and renewal process is not automatic. You can purchase dedicated SSL here: https://billing.westnic.net/order.php?step=0&productGroup=3