Answer4. Nessus Vulnerability Scanner

Step1
Download the Nessus Vulnerability scanner from the www.nessus.org/download website it's a free version.

Step3
Fill out the information for software licence agreement to register and submit it then i got a activation code through my email.

Step5.
After activated i started Nessus server and configuration application and accept the default setting.

Step6.

Then i started the nessus client to shoe the main interfaces.

Step10
and connect to the server by clicking connect button,When i connect with local host then i received a message that it is a first connection to the remote host. then it will ask for do u continue yes/no? Then i did yes

Step13

Entered the range of address that encompass computers connected to network such as 192.168.1.1-192.168.1.255.

Step15

Then it scan and connect with the network assign range and then finally, the scanner will show a report displaying the scanned IP addresses and their details and their vulnerabilities and Risk Factors.

Step17

Vulnerability scanning assist to recognize in system to accumulate against the attack. It will help helps to fix before attack. Screenshot vulnerability scan was done in range 192.168.1.1-192.168.1.255 in my system. After scanning it found the vulnerability to 192.168.0.115 in my system. It provides vulnerabilities, solutions and risk factors.

As Nessus scanner is mainly a port scanner, protocol analyzer and a password cracker, it is very helpful at this level. On the other hand, it cannot be used instead of an anti-virus software because it only can detect viruses that use ports or open them

References:-

Ciampa, M. (2008) Security+ Guide to Network Security Fundamentals. Boston, USA: Cengage Learning.

Nessus. (2010). In Wikipedia. Retrieved 21st jan, 2010, from

http://en.wikipedia.org/wiki/Nessus_(software)