Secure Sockets Layer (SSL) protocol is used to secure web traffic and other types of network traffic, such as FTP and IMAP, between a client and the server.

It works by encrypting data sent between the client and the server making it more secure. SSL can be installed on both Apache web servers and Microsoft IIS web servers. SSL can be used in load balancing to encrypt all traffic between the load balancer and servers, giving added security to your application.

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