IT Security Basics
IP
TCP
ARP
UDP
DNS
Presentation
Session
Transport
Physical
Application
Network
Data Link
Session
Transport
Data Link
Presentation
Transport
Network
Physical
Data Link
Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
IP
UDP
TCP
ICMP
None of the above
Security, Integrity, Functionality
Security, Ease of Use, Functionality
Availability, Ease of Use, Functionality
Confidentiality, Secuirty, Ease of Use
Confidentiality, Integrity, Availability
Type - 2 bytes
Data - 64 to 1500 bytes
Frame Check Sequence (FCS) - 4 bytes
Preamble - 8 bytes
Destination/Source Address - 6 bytes ea
Low physical security
Active services
Open Ports
The human element
Bad passwords
Source and Destination IP
Source and Destination Port
Sequence Number
Connection Number
A &B only
Value of next sequence number destination expects to receive and ACK flag
SYN bit of establishing connection
Initial sequence number
Profie
Religious/Political/Ethical reasons
"Mount Everest" syndrome
Revenge
To secure it
True
False
Threat
Vulnerability
Comprosmise
Risk
None of the above
Confidentialtiy
Ease of Use
Availability
Integrity
Accountablility
Accountability
Integrity
Availability
Confidentiality
None of the above
Confirming your identity with an element unique to the individual
Supplying your identity
Using your identity to assign access rights
Tracking what users are doing while accessing the systems
None of the above
Nmap
Snort
Nessus
Nmap
Tcpdump
Separtation of Privileges
Principle of Least Privileges
Defence in Depth
Security through obscurity
All of the above
Over the internet
Over the LAN
Locally
Offline
Ignorance
Active, Passive
Passive, Active
Active, Submissive
Positive, Active
None of the above
Ping
Snort
Nessus
Ethereal
Tcpdump
Confirming your identity with an element unique to the person
Supplying your identity
Using your identity to assign access rights
Tracking what users are doing while accessing the systems
None of the above
Destruction
Integrity
Alteration
Disclosure
Confidentiality
True
False
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