1. Internet security
By,Prashantgohel
09bce014

2. some basic threats
Virus: virus attempts to install it self on victimscomputer. Its main aim that these infectedfiles will be transmitted to another system.
Worm: working of worm is similar to the virus. But key diffrence is worm propogate it self without user involvement.
3. Contiunue..
Rootkit: it is a piece off software ,after installing it self on computer it opens up a port to allow hacker to communicate with it & take full control of system.
Scanner: it interrogate machineon the internet to get information about system.
4. Advanced threats
Ipspoofing
Session hijacking
Network sniffer
Back orifice
Botnet-attacks
Anti forensic techniques
5. Some basic fundamentals
6. Dns
What is dns ?
Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses, Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address.
7. Application
A lookup mechanism for translating objects into other objects
A globally distributed, loosely coherent, scalable, reliable, dynamic database
Comprised of three components

A name space

8. Servers making that name space available 9. Resolvers (clients) which query the servers about the name space