Transport Encryption Algorithms

Question 1

What is SSL?

Answer 1

SSL is Secure Sockets Layer, one of the first encryption methods for Internet browsers.

Question 2

What is TLS?

Answer 2

Transport Layer Security, improved upon SSL, and is a worldwide standard.

Question 3

What is HTTPS?

Answer 3

HTTP using SSL/TLS. It is the combination of SSL or TLS with browsers or the protocols that go from web servers to browsers and vice versa. Encrypts web server communication.

Uses port TCP 443.

Question 4

What is SSH?

Answer 4

Secure Shell, used to encrypt communications with servers/terminals.

Question 5

How can SSH be used?

Answer 5

Can be used with remote administration (to servers/terminals), and with Secure Copy (SCP), and Secure FTP (SFTP).

Question 6

What is IPsec?

Answer 6

IPSec, security for OSI Layer 3 (IP Packets, TCP/UDP 1293). Used when you’re not just encrypting communication to and from web browsers/servers.

Question 7

What does IPsec provide?

Answer 7

Confidentiality (built-in encryption), integrity and anti-replay attacks. Has the capability for packet signing.

Question 8

What are the two core IPsec protocols?

Answer 8

Authentication Header (AH) and Encapsulation Security Payload (ESP)