network and security Flashcards
what does firewalls do?
can block traffic from suspicious hosts/computers/address/posts
what does virus checker do
scans filers to look for malicious codes
what does login system/authentication/password/biometric
User has to enter username and password
can be authenticated by other methods such as biometric (accept examples)
Login details method to a database of users
What does MAC address filtering do?
Each hardware device has unique hardware address
what does Encryption do?
Data is stored/transmitted as ciphertext
what does prevention of use external storage devices/USB ports?
Ports on a computer are disabled
Storage devices connected to them cannot be accessed
Flash drives cannot be used
what does assess rights mean?
users are associated with certain privileges
These might control files that can be accessed/run
What is CAPTCHA?
Users have to type in some distorted text/recognised images for a set of images
What is automatic software updates?
Operating system / software configured to download updates from the network
what is an Archiving?
Networks often have to store a lot of data.
A good archiving strategy takes old, non-essential data and puts it somewhere safe.
