CompTIA Security+

Algorithms

A network segment created using two firewalls; exists between the internet & an internal network.

Algorithm that cannot be reversed to decode data.

Type of cryptography used to provide an ingegrity check.

Set of programs & codes that allow an undectable presence on a system with Admin rights.

Authentication method based upon an authentication server that distributes tickets to clients; default port is 88; requires computers have time sources synchronized.

Key

Network monitoring used to obtain plaintext usernames & passwords; program that constantly observes data traveling over a network.

Uses 3DES & SHA-1 for symmetric encryptions of message data & hashing methods; replaced SLIP (Serial Line Internet Protocol); uses symmetric scheme to encrypt data; uses pre-shared keys;

A credential digitally signed by a trusted authority.

Used to determine equipment status & modify configuration or settings of network devices; supplies passwords & data over the network.

1) Access controls that restrict usage; 2) recording to write-once media (CD-R).

MOST secure form of encryption.

BEST type of encryption for a large amount of data; uses secret or private keys; DES, AES, 3DES, RC5, IDEA.

BEST method for deploying third party application security updates on a network with 1000+ computers.