Networking Secure Protocols

Question 1

At what OSI-layer does TLS work on?

Answer 1

(4) Transport layer security (TLS) operates on the transport layer

Question 2

Default listening port for SSH?

Answer 2

22

Question 3

Is ftp in cleartext?

Answer 3

yes, that led to the creation of ssh (secure shell) in 1995.

Question 4

Benefits of SSH

Answer 4

Password, public key and two factor authentication is supported by SSH. Cryptography also gives end-to-end protection aswell as securing data integrity. Tunneling and X11 forwarding! (Tunneling: Can lead other protocols securely through the shell)

Question 5

[CMD] Connect via SSH to a remote device

Answer 5

ssh username@ip

Question 6

[CMD] Connect via SSH with a GUI

Answer 6

-X flag. E.g. ssh username@ip -X

Question 7

Default port for HTTPS

Answer 7

443

Question 8

Default port for SSH

Answer 8

22

Question 9

Default port for IMAPS

Answer 9

993

Question 10

Default port for POP3S

Answer 10

995

Question 11

Default port for SMTPS

Answer 11

587

Question 12

[ACRONYM] VPN

Answer 12

Virtual Private Network

Question 13

Explain the V in Virtual Private Network

Answer 13

Representation or simulation of reality but is not physically present, So in this case it would be a simulation of an actual private LAN

Question 14

Explain the P in Virtual Private Network

Answer 14

The private nature of the network is beneficial in that it is hard if not impossible to eavesdrop on the communication