security protocols (SSL etc)

Question 1

what are the two types of security protocols

Answer 1

SSL (secure sockets layer) , TLS (transport layer security)

Question 2

what is SSL

Answer 2

type of protocol used by computers to communicate with eachother across a network

Question 3

what does SSL allow to happen

Answer 3

allows data to be sent and received securely across a network

Question 4

what does SSL use

Answer 4

they use encryption and digital certificates, they use public and private keys (data is meaningless without these keys)

Question 5

what do digital certificates in SSL contain

Answer 5

they contain public keys

Question 6

how can we tell that a website is using SSL

Answer 6

(same as how we know the website is secure [https] )

• padlock
• https
• color of address bar changes

Question 7

explain the process of SSL

Answer 7

web browser connects to the website
web browser requests the web server to identify itself
web server sends browser a copy of its SSL certificate
browser checks that the certificate is trustworthy and sends message
server acknowledges the message and the SSL session begins

Question 8

what are the two layers of TLS

Answer 8

record layer

handshake layer

Question 9

what is the record layer of TLS

Answer 9

it contains the data being transferred

can be used with or without encryption

Question 10

what is the handshake layer of TLS

Answer 10

website and client authenticate eachother

encryption is used for secure session

Question 11

what are differences between TLS and SSL

Answer 11

TLS makes use of session caching

TLS separates record and handshake protocol