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How to install and configure Nessus Vulnerability in Ubuntu
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How to install and configure Nessus Vulnerability in Ubuntu

To install and configure Nessus Vulnerability Scanner in Ubuntu

Nessus is a free source remote security scanning tool, that scans a computer. It alerts the system and discovers any vulnerabilities is found in the system. It also discovers any malicious hackers could gain access to any computer you have connected to a network. During the scanning process it does 1200 checks on a given computer.

To install Nessus Vulnerability Scanner

Download the Nessus Vulnerability Scanner installation package.
1
Agree the subscription agreement and click save file.
2
While downloading, sign up with tenable network security and click Get an activation code.
3
Then choose the type of registration you prefer.
4
Enter the valid information for an activation code and click Register.
5
Login into your email to check for the activation mail.
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Now open the terminal. Change directory to Downloads and then list all the files by running the following command.

root@linuxhelp:/home/user1# cd Downloads/
root@linuxhelp:/home/user1/Downloads# ls -l 
total 33204
drwxr-xr-x 2 user1 user1 4096 Aug 18 10:57 ./
drwxr-xr-x 16 user1 user1 4096 Aug 18 10:44 ../
-rw-rw-r-- 1 user1 user1 33990680 Aug 18 10:57 Nessus-6.8.1-debian6_amd64.deb

To install Nessus, use the following command.

root@linuxhelp:/home/user1/Downloads# dpkg -i Nessus-6.8.1-debian6_amd64.deb 
Selecting previously unselected package nessus.
(Reading database ... 172193 files and directories currently installed.)
Preparing to unpack Nessus-6.8.1-debian6_amd64.deb ...
Unpacking nessus (6.8.1) ...
Setting up nessus (6.8.1) ...
Unpacking Nessus Core Components...
nessusd (Nessus) 6.8.1 [build M20062] for Linux
Copyright (C) 1998 - 2016 Tenable Network Security, Inc
Processing the Nessus plugins...
[##################################################]
All plugins loaded (1sec)
- You can start Nessus by typing /etc/init.d/nessusd start
- Then go to https://linuxhelp:8834/ to configure your scanner
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for systemd (229-4ubuntu4) ...

Now start and check the status of the Nessus services.

root@linuxhelp:/home/user1/Downloads# systemctl start nessusd.service
root@linuxhelp:/home/user1/Downloads# systemctl status nessusd.service  
nessusd.service - LSB: Starts and stops the Nessus
Loaded: loaded (/etc/init.d/nessusd; bad; vendor preset: enabled)
Active: active (running) since Thu 2016-08-18 10:59:49 IST; 5s ago
Docs: man:systemd-sysv-generator(8)
Process: 4015 ExecStart=/etc/init.d/nessusd start (code=exited, status=0/SUCCE
Tasks: 25 (limit: 512)
CGroup: /system.slice/nessusd.service
├─4018 /opt/nessus/sbin/nessus-service -D -q
└─4019 nessusd -q
Aug 18 10:59:48 linuxhelp systemd[1]: Starting LSB: Starts and stops the Nessus.
Aug 18 10:59:49 linuxhelp nessusd[4015]: Starting Nessus : .
Aug 18 10:59:49 linuxhelp systemd[1]: Started LSB: Starts and stops the Nessus.

Now permit the default HTTPS web port for Nessus.

root@linuxhelp:/home/user1/Downloads# ufw allow 8834/tcp 
Rules updated
Rules updated (v6)
Open the browser and type your ip address or the hostname of the system
https://linuxhelp:8834

Nessus setup home screen appears.
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Create an account for the Nessus.
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Enter the activation code and click continue to proceed further.
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Downloading process starts.
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Intializing Nessus.
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Enter the admin credentials to enter into the Nessus.12
To create a new scan, click New Scan icon.
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Select the type of scan.
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Enter the details of the system where the scan is to be performed.15
Select the scan and click the drop-down more and then launch the scan.
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Select the scan to see the vulnerabilities in the target system.
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Click the vulnerability to see the description and solution for the vulnerabilities.
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Go to Settings and then click Account Settings to view the account details.
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To view the Network settings, click Communications tab.
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To know about the advanced settings, click advanced option.
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