A security engineer, Joe, has been asked to create a secure connection between his mail
server and the mail server of a business partner. Which of the following protocol would be
MOST appropriate?
A.
HTTPS
B.
SSH
C.
FTP
D.
TLS
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What we are after is not connection TO a server.
We are after permanent secure connection between a mail server and another mail server.
Mail Servers support either SSL or TLS for encryption (provides the security aspect of the question)
ELIMINATION:
a- HTTPS – For web transfers
b- SSH – For remote connections
c- FTP – For files transfer and not very secure
The only one left is TLS = Transport Layer Security
Transport Layer Security (TLS) is a cryptographic protocol designed to provide communications security over a computer network. It uses X.509 certificates and hence asymmetric cryptography to authenticate the counterparty with whom it is communicating, and to exchange a symmetric key. The TLS protocol allows client-server applications to communicate across a network in a way designed to prevent eavesdropping and tampering.
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