Hardware and Software Security Flashcards
Physical Security Methods refer to ……
Methods for restricting access so malicious users cannot gain access to IT systems.
What are some methods for Physical Security Methods?
.Site Security Locks .Card Entry .Biometrics .CCTV .Security Staff .Alarms .Protected Cabling .Cabinets
Are Backup Procredures useful?
Yes.
Bakups allow for easier data recovery from any damage or accidental loss.
Define an “Anti-virus”
Anti-virus is a utility program that is used to prevent malicious software from infecting your computer, or detect and remove malicious software that has already infected you computer.
An Anti-virus may use Signiture Detection.
Define “Signiture Detection”
Signiture detection identifies malware using a apttern (the signiture) for the malware code that is compared to programs on your hard disk to identify the viruses.
An Anti-Virus may use Heuristic Detection.
Define “Heuristic Detection”
Heuristic Detection monitors the behaviour of programs to identify any suspicious behaviour and flags it as a possible virus.
Once detected, what can happen to a virus?
The virus can be:
.Cleaned
.Quarentined
.Deleted
Define a “Firewall”
Firewalls are either a hardware device or a utility program that monitors incoming and outgoing network traffic, and blocks any traffic that it deems suspicious.
A Firewall may use Packet Filtering.
Define “Packet Filtering”
Packer Filtering inspects each packet of data and compares it to pre-defined security rules. If the packet is flagged by the rules, then it is prevented from passing through the firewall.
At what layer does a firewall have to be to control the input and output of packets to an application?
At Application Layer,
Hence the name Application Level Firewall
What rules define what packets should be allowed by the firewall?
Inbound and Outbound rules.
What can we do with the rules?
.Accept - Let in
.Reject - Send an message
.Drop - Reject with no message
Define “Network Address translation”
Network Address Translation is used to hide addresses of our device from the outside world.
