SSL is the protocol that is most likely to be allowed through the widest number of firewalls
By the Netscape Communications Corporation, the Secure Sockets Layer (SSL) protocol was created. Through the use of SSL, data transmission between a client and a server is guaranteed to be secret. With the help of this protocol, the client can confirm the identity of the server.
Three varieties of SSL certificate authentication types are widely acknowledged: Organization Validation (OV), Extended Validation (EV), and Domain Validation (DV). A copy of the server's SSL certificate is sent to the browser. If the SSL certificate is trusted, the browser verifies this. If so, it notifies the server via message. An SSL-encrypted session is started when the server replies with a digitally signed acknowledgment.
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