4.3 Network Security Flashcards
What is the AAA Security Framework?
Authentication
- 2 Factor Authentication
- Login Credentials (username/password)
Authorisation
- implement user account controls
- secure databases with a username and password
- limit developers’ access only to required parts of the database
Accounting
- Log all users/admin actions for investigation in case of a data leak.
Explain the 2 purposes of a firewall.
A firewall prevents unwanted traffic in a network and blocks unauthorised data packets from entering or leaving the network by checking the metadata of each data packet and filter incoming and outcoming data packets based on a set of user-defined rules.
Describe one limitation of a firewall.
A firewall can only filter data packets based on the packets’ metadata hence it is unable to access the contents of the data packet to detect malicious data.