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SSL Stands for "Secure Sockets Layer." SSL is a secure protocol developed for sending information securely over the Internet. Many websites use SSL for secure areas of their sites, such as user account pages and online checkout. Usually, when you are asked to "log in" on a website, the resulting page is secured by SSL. SSL encrypts the data being transmitted so that a third party cannot "eavesdrop" on the transmission and view the data being transmitted. Only the user's computer and the secure server are able to recognize the data. SSL keeps your name, address, and credit card information between you and merchant to which you are providing it. Without this kind of encryption, online shopping would be far too insecure to be practical. When you visit a Web address starting with "https," the "s" after the "http" indicates the website is secure. These websites often use SSL certificates to verify their authentic...

A mail server (or email server) is a computer system that sends and receives   email . In many cases,   web servers   and mail servers are combined in a single machine. However, large   ISPs   and public email services (such as Gmail and Hotmail) may use dedicated hardware for sending and receiving email. In order for a computer system to function as a mail server, it must include mail server   software . This software allows the system administrator to create and manage email accounts for any   domains   hosted on the server. For example, if the server hosts the   domain name   "techterms.com," it can provide email accounts ending in "@techterms.com." Mail servers send and receive email using standard email   protocols . For example, the   SMTP   protocol sends messages and handles outgoing mail requests. The   IMAP   and   POP3   protocols receive messages and are used to process incoming mail...

What is HTTP? # HTTP stands for Hypertext Transfer Protocol. When you enter http:// in your address bar in front of the domain, it tells the browser to connect over HTTP. HTTP uses TCP (Transmission Control Protocol), generally over port 80, to send and receive data packets over the web. To put it simply it is a protocol that's used by a client and server which allows you to communicate with other websites. The client sends a request message to an HTTP server (after the TCP handshake) which hosts a website, the server then replies with the response message. What is HTTPS? HTTPS stands for Hypertext Transfer Protocol Secure (also referred to as HTTP over TLS or HTTP over SSL). When you enter https:// in your address bar in front of the domain, it tells the browser to connect over HTTPS. Generally sites running over HTTPS will have a redirect in place so even if you type in http:// it will redirect to deliver over a secured connection. HTTPS also uses TCP (Transmissio...