Week_1 Flashcards
Who is the internet run by?
Internet Society
What is Internet Protock Suite
Internet Protocol Suite is a networking model and a set of communication protocols used for the internet and similar networks
What does Internet Protocol Suite do?
Internet Protocol Suite provides end to end connectivity, while specifying how data should be formatted, addressed,trasmitted, routed and recieved at the destination
How is the Internet Protocol Suite organised?
Four abstraction layers
How was the one terminal problem solved by Telnet?
Built a software stack and diveded it into:
Application
Network
How many bytes per character does Telnet use?
One
Name 3 problems with Telnet.
No authentication system
Messages are not encrypted
Many exploitable vulnerabilities have been discovered on Telnet servers
Name 3 Telnet Protocols
FTP
HTTP
SMTP
What does HTTP stand for?
Hypertext Transfer Protocol
What are the differences between 1.0 and 1.1 HTTP connections?
- 0 = non-persistent connections
1. 1 = Persistent connections
What kind of software is SSL
Cryptographic software
What is SSL?
A cryptographic software that hses encrypted tunnel between client & server.
What kind of key exchange does SSL?
Diffie-Helman Key Exchange
What does Diffie-Helman Key exchange do?
A method of exchanging cryptographic keys
Also allows two parties that have no poor knowledge of each other to jointly establish a shared secret key ober an insecure communications channel
What does Diffie-Helman use to encrypt subsequent communications?
Symmetric key cipher
