You are speaking to a group of high school students in a tec

You are speaking to a group of high school students in a technology workshop about network security. You are describing a protocol that uses public-key cryptography to authenticate between a local computer and a remote computer. Of the following, what security protocol are you describing?

A. FTP

B. HTML

C. SSH

D. TCP/IP

Solution

C: SSH

Secure Shell (SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. SSH keys come in pairs; a private and a public key. Usually the private key is saved as~/.ssh/id_<type> and the public key is ~/.ssh/id_<type>.pub. The type of encryption most often used by RSA. SSH keys are also more secure than passwords because the private key used to secure the connection is never shared. Private keys can also be encrypted so their contents can’t be read as easily.