Identifying Network Threats using Network Security Tools

This report discusses the use of network security tools like nmap and metasploit for identifying network threats and mitigating them. It also covers threat mitigation techniques like network segmentation, deployment of a firewall, application of patch, encryption of the network channel, and creation of VPN channel. The report provides a detailed literature review and a conclusion on the effectiveness of these tools and techniques.

Running head: NETWORK SECURITY
Identifying Network Threats using Network Security Tools
Name of the Student
Name of the University
Author’s Note

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Table of Contents
Introduction...........................................................................................................................................2
Literature Review..................................................................................................................................2
Network Security Tools..........................................................................................................................4
Threat Mitigation Techniques................................................................................................................5
Conclusion.............................................................................................................................................5
Bibliography...........................................................................................................................................7

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Introduction
Two network tools are selected for the analysis of the performance and the vulnerability of the
network and the tools are nmap and metasploit. An investigation is made with the tool and for the
analysis of the risk acting on the network. The nmap is used for scanning the network and gathering
information about the IP address of the hosts connected in the network. The exploitation of the
network using the security tools helps in securing the network from the external users and remove
the errors in the configuration of the network. The metasploit is used for finding holes in the
network and determining the impact of the vulnerabilities and fix the exposure using some patch or
reconfiguring the systems. The metasploit acts a weapon for the penetration tester for simulating
the real time attacks and provide training to the team to secure the network.
Literature Review

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The namp is pre-installed in kali Linux and it is used for testing the available device or hosts
connected in the network for finding a target and exploit the system to test the vulnerability of the
network. The IP address, operating system and the open ports of the targeted machine can be
gathered using the nmap network analysis tool that helps the penetration tester to analyse the
vulnerability. Nmpa is a powerful network analysis tool and it provides different features for the
users for the exploitation of the network.

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The metasploit is used for gathering the network information and sharing the information
with the network administrator for implementation of successful and efficient penetration testing. It
is used for the simulation of the complex types of attacks and protecting the network from the
security risks acting on the network. For creating a defence against the attacks many complicated
steps should be followed and other network security tools can be used for making the network
protected from the security threats.
The different types of attacks are needed to be defended by the network for increasing the
security of the network solution. There are different types of threats such as distributed denial
service attacks, SSL attacks, DNS attacks, Backdoor attacks, brute force attacks, etc. The risk acting on
the network should be prioritized according to their types and thee different types of attacks like
man in the middle attack and the session hijacking attacks can be eliminated with the application of
the security techniques in the network. The hijacker gains the access of the network using different
open ports that are identified using the nmap and the data are collected using metasploit for finding
loop holes in the network. The distributed denial of service attacks can be performed using the third
party network and focus is given on the type of service provided by the network for taking important
action and removing the exception used for accessing the resources of the network. The
implementation of the antivirus software in the targets machine can help in identifying the malware
and the virus that can affect the performance of the network. A certain level of skill should be
available for the user and social engineering tool should be used for the identification of the
nwtwork vulnerability and secure the network from different types of attacks.
Network Security Tools
Two security tools are selected for the analysis of the network such as nmap and Metasplot for the
analysis of the current performance of the network.
Free and open source software is used for the exploitation of the network and Nmap is an open
source tool that is used for auditing the network and it is used for the identification of the problems
in the network and dealing large number of inventory problems. The raw IP data packets can be
captured from the network and monitoring the hosts connected in the network and determination
of the service offered in the network. Different platforms are supported by nMap such as Linux, Unix,
Windows, Mac OS, etc. The GUI and the commands can be used for scanning the network and
analysis of the response.
Metaspoilt is also a free tool that is used for analysing the vulnerabilities acting on the system and it
is applied for performing different types of test. It has different advanced options that is used for the

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exploitation of the network using different codes and it analyses the payloads of the network. It is a
well-known model and can be integrated with different penetrating testing tool for getting an
appropriate result of exploitation of the network. It uses an encoding technique for the creation of
an intrusion prevention system and reduces the effort of the payload writers, exploiters and the
attackers to exploit the network.
Threat Mitigation Techniques
The following risk mitigation strategy are given in the report for securing the network from different
types of threats acting in the network such as:
 Network segmentation – The network should be divided into multiple vlan using multiple
subnet such that the intruder does not have the access of the hosts connected with the
different network and the network is secured.
 Deployment of a firewall – The firewall is used for blocking the unknown sources in the
network and protects the assets in the network by limiting the access of the core resources
connected in the network. The firewall can govern the network traffic and used for having an
administrative control over the network.
 Application of Patch – The vulnerabilities that are identified from the network should be
analysed for identifying the source of the vulnerability. The application or the software
installed in the host causing the vulnerability should be managed with the application
patches or updating the software such that it does not causes a risk for the network.
 Encryption of the network channel – The network channel used for communication can be
encrypted such that if the hacker gains the access of the network the data packet cannot be
retrieved and used for gathering information about the network.
 Creation of VPN channel - it is used for connecting the private network with the public
network using secure communication channel for ensuring that the data is passed through
secure channel. Different authentication mechanism such as tokens, passwords and other
unique identification methods are used securing the server and the connection.
Conclusion
The report is prepared for the comparison of two network analysis tool and comparing the results
obtained from each of the tool for the identification of the threats and the risks acting on the
network. The threats acting on the network is identified and a proper mitigation strategy is given in
the report for securing the network from external agents. The screenshot of the usage of the
network monitoring tool is attached with the report for the demonstration of the exploitation of the

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network. A mitigation strategy for the removal of then risk acting on the network is created and
discussed in the report for the development of the report. The hacker can exploit the network after
gathering information from the different sources of the network and provide a risk mitigation
strategy for securing the ports and the entry point in the network. The information about the
firewall can be gathered using the nmap and it can be bypassed by the hacker to gain the access of a
targeted host and intrude into the network.

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Bibliography
[1]. Armstrong, M.E., Jones, K.S., Namin, A.S. and Newton, D.C. What Vulnerability Assessment
and Management Cybersecurity Professionals Think Their Future Colleagues Need to Know.
In Proceedings of the 49th ACM Technical Symposium on Computer Science Education (pp.
1082-1082). ACM., 2018, February.
[2]. Atwater, E., Bocovich, C., Hengartner, U. and Goldberg, I. Live Lesson: Netsim: Network
simulation and hacking for high schoolers. In 2017 {USENIX} Workshop on Advances in
Security Education ({ASE} 17). USENIX} Association}., 2017 August.
[3]. Cuppens, F. WirelessHART NetSIM: A WirelessHART SCADA-Based Wireless Sensor Networks
Simulator. In Security of Industrial Control Systems and Cyber Physical Systems: First
Workshop, CyberICS 2015 and First Workshop, WOS-CPS 2015 Vienna, Austria, September
21–22, 2015 Revised Selected Papers (Vol. 9588, p. 63). Springer., 2016, June.
[4]. Holik, F., Horalek, J., Marik, O., Neradova, S. and Zitta, S. Effective penetration testing with
Metasploit framework and methodologies. In Computational Intelligence and Informatics
(CINTI), 2014 IEEE 15th International Symposium on (pp. 237-242). IEEE., 2014, November.
[5]. Johansen, G., Allen, L., Heriyanto, T. and Ali, S. Kali Linux 2–Assuring Security by Penetration
Testing. Packt Publishing Ltd., 2016.
[6]. Nayak, P. and Sinha, P. Analysis of Random Way Point and Random Walk Mobility Model for
Reactive Routing Protocols for MANET Using NetSim Simulator. In Artificial Intelligence,
Modelling and Simulation (AIMS), 2015 3rd International Conference on (pp. 427-432). IEEE.,
2015 December.
[7]. Peng, J., Li, H., Wang, Y. and Chen, J. A web tool for measuring gene semantic similarities by
combining Gene Ontology and gene co-function networks. In Proceedings of the 6th ACM
Conference on Bioinformatics, Computational Biology and Health Informatics (pp. 678-679).
ACM., 2015 September.
[8]. Saifuddin, K.M., Ahmed, A.S., Reza, K.F., Alam, S.S. and Rahman, S. Performance analysis of
cognitive radio: Netsim viewpoint. In Electrical Information and Communication Technology
(EICT), 2017 3rd International Conference on (pp. 1-6). IEEE., 2017 December.