Network Security System Implementation Using Raspberry Pi-Based Random Port Knocking Sent Via Telegram

2018 ◽  
Vol 7 (2) ◽  
pp. 61-67
Author(s):  
Iga Revva Princiss Jeinever
Keyword(s):  
High Risk ◽  
Network Security ◽  
Computer Networks ◽  
Computer Network ◽  
Security System ◽  
Raspberry Pi ◽  
System Implementation ◽  
The Right ◽  
Network Administrators ◽  
Ip Block

Computer networks are basically not safe to access freely. Security gaps in the network can be seen by irresponsible people with various techniques. Opening a port for access carries a high risk of being attacked by an attacker. In this connection, network administrators are required to work more to be able to secure the computer network they manage. One form of network security that is often used by network administrators in server management is through remote login such as ports on telnet, SSH, etc. A port that is always open is a network security hole that can be used by people who are not responsible for logging into the server. Focusing on these problems, in this study, Random Port Knocking is the right way and can be used to increase network security. With Random Port Knocking, the port will be opened as needed, the port will automatically change when it fails to log in more than three times and IP will automatically be blocked and access will not continue so that attacks on the network can be avoided and network security stability can be further improved. The final result of this research shows that the method applied in this research makes server safe. Because port randomization and IP block make irresponsible parties try harder to penetrate firewall walls.

scholarly journals Computer Network Simulation and Network Security Auditing in a Spatial Context of an Organization

10.28945/2857 ◽  
2005 ◽  
Author(s):  
Andrzej Zaliwski
Keyword(s):  
Network Security ◽  
Computer Networks ◽  
Computer Network ◽  
Network Simulation ◽  
Security System ◽  
Spatial Context ◽  
The Internet ◽  
Business Organizations ◽  
Strong Emphasis ◽  
New Challenges

The business organizations currently functioning inside cyberspace are vulnerable to threats and forms of crimes that were unknown prior to the Internet era. New challenges for security have emerged from this situation. It has become increasingly necessary to educate a large number of professionals to be better prepared to maintain the growing number of computer networks. Also, there is a need to place strong emphasis on the security aspects of a network. These goals are impossible to realize without solving the following problems: lack of safe infrastructure, where security experiments can not compromise the organization’s security; and the complexity of existing security auditing methodologies which limits the number of professionals who are able to use them. The complexity makes difficult to obtain a bird-eye view of the whole company’s security system in a way similar to tactical and strategic military map. This hinders the ability to have a single complete status of an organization. This paper describes a tool that can be used to overcome the above problems.

scholarly journals Intruder Detection Monitoring System in Computer Networks Using Snort Based Sms Alert (Sistem Monitoring Deteksi Penyusup Dalam Jaringan Komputer Menggunakan Snort Berbasis Sms Alert)

KOMTEKINFO ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 159-170
Author(s):  
Heri Yanto ◽  
Febri Hadi
Keyword(s):  
Network Security ◽  
Monitoring System ◽  
Computer Networks ◽  
Data Traffic ◽  
Intruder Detection ◽  
Traffic Detection ◽  
Network Administrators ◽  
Sms Notification

Network security is an important factor in guaranteeing data. Guaranteed security can avoid losses caused by attacks that occur in the network. Administrators play an important role in maintaining data or file security, but administrators cannot at all times monitor the security of the network. This problem can be overcome by adding a system for data traffic detection or called IDS. IDS will be linked by SMS Alert so that administrators can receive notifications of interruptions on the network. In this study, researchers conduct analysis and testing of problems that arise so that it will produce a system that is able to detect attacks or disruptions on the network quickly and can provide warnings to network administrators, so that administrators can take steps to anticipate these disruptions. Attacks can be detected from the pattern of attacks that are in the IDS rule so that intruders who try to enter will be detected and the system will send an SMS notification to the administrator.

Introduction to Network Security

2016 ◽  
pp. 1-48
Author(s):  
C. V. Anchugam ◽  
K. Thangadurai
Keyword(s):  
Network Security ◽  
Computer Network ◽  
Data Communications ◽  
Risk Environment ◽  
Human Errors ◽  
Unauthorized Access ◽  
The Past ◽  
Definition Of ◽  
Security Network ◽  
Network Administrators

Writing a chapter on network security is something like writing a brief introduction to flying a commercial airliner. Dissimilar, data communications of the past, today's networks incorporate varied devices that handle the data because it passes from the sender to the receiver. The first question to address is what we mean “network security”. Network security consists of the provisions and policies adopted by a network administrator to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. A generic definition of security is “freedom from risk or danger and safety”. However it is not only human errors that can cause problem to network security, problems can also be caused by natural forces like fire breakouts, earthquakes, floods lightning etc. The ways network administrators think about securing networks has been changed by an increasingly dynamic and technically challenging risk environment. Security is an assessment of risk. Secure environments are designed and developed through an intentional effort.

Game Theory for Network Security

Game Theory ◽  
2017 ◽  
pp. 369-382
Author(s):  
Sungwook Kim
Keyword(s):  
Game Theory ◽  
Network Security ◽  
Computer Networks ◽  
Computer Network ◽  
Government Agencies ◽  
Public And Private ◽  
Unauthorized Access ◽  
Access To Data

Network security consists of the provisions and policies adopted by a network administrator to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. It involves the authorization of access to data in a network, which is controlled by the network administrator. Usually, network security covers a variety of computer networks, both public and private, that are used in everyday jobs conducting transactions and communications among businesses, government agencies, and individuals. This chapter explores network security.

Jurnal firewall

2020 ◽  
Author(s):  
Muhammad FitraHamidy ◽  
Iqbal Harifal ◽  
Pandu Pratama Putra M.Kom
Keyword(s):  
Network Security ◽  
Security System ◽  
Wide Area ◽  
Wide Area Networks ◽  
Security Device ◽  
The Right

ABSTRACTFirewalls limit anyone who has the right to access an internet in a network, and anyone who must beallowed and not allowed to pass, this is usually called filtering. A firewall on the network, can monitor the activity of a network. From the tests carried out, the firewall is proven to protect a network by filtering and proxies. Aiming to optimize the firewall security system using dual home hosts, screened hosts, and screened subnets on wide area networks. Firewall is a network security device that allows various parts of anetwork segment to carry out

Introduction to Network Security

2017 ◽  
pp. 33-80
Author(s):  
C. V. Anchugam ◽  
K. Thangadurai
Keyword(s):  
Network Security ◽  
Computer Network ◽  
Data Communications ◽  
Risk Environment ◽  
Human Errors ◽  
Unauthorized Access ◽  
The Past ◽  
Definition Of ◽  
Security Network ◽  
Network Administrators

Writing a chapter on network security is something like writing a brief introduction to flying a commercial airliner. Dissimilar, data communications of the past, today's networks incorporate varied devices that handle the data because it passes from the sender to the receiver. The first question to address is what we mean “network security”. Network security consists of the provisions and policies adopted by a network administrator to prevent and monitor unauthorized access, misuse, modification, or denial of a computer network and network-accessible resources. A generic definition of security is “freedom from risk or danger and safety”. However it is not only human errors that can cause problem to network security, problems can also be caused by natural forces like fire breakouts, earthquakes, floods lightning etc. The ways network administrators think about securing networks has been changed by an increasingly dynamic and technically challenging risk environment. Security is an assessment of risk. Secure environments are designed and developed through an intentional effort.

scholarly journals Application Strategy of Data Encryption Technology in Computer Network Security

2018 ◽  
Vol 2 (5) ◽  
Author(s):  
Yuantian Zhang ◽  
Wei Yang ◽  
Zhongxi Zhang
Keyword(s):  
Network Security ◽  
Computer Networks ◽  
Computer Network ◽  
Information Age ◽  
Data Encryption ◽  
Reliable Operation ◽  
Main Research ◽  
Security Issues ◽  
Computer Network Security

Abstract: In the context of the information age, on the basis of the convenience of computer networks, security issues have gradually emerged. The data encryption technology is reasonably applied in the process of computer network security practice, which promotes the safe and reliable operation of the computer network to a certain extent. Based on this, our article regards data encryption technology as the main research object, focusing on its specific application in computer network security.

scholarly journals Network Security Assessment Using Internal Network Penetration Testing Methodology

2018 ◽  
Vol 2 (4-2) ◽  
pp. 360
Author(s):  
Deni Satria ◽  
Alde Alanda ◽  
Aldo Erianda ◽  
Deddy Prayama
Keyword(s):  
Network Security ◽  
Computer Network ◽  
Cyber Attacks ◽  
Security System ◽  
Security Assessment ◽  
Security Risk ◽  
Security Systems ◽  
Penetration Testing ◽  
Internal Network ◽  
The Stability

The development of information technology is a new challenge for computer network security systems and the information contained in it, the level of awareness of the importance of network security systems is still very low. according to a survey conducted by Symantec, the desire to renew an existing security system within a year within a company has the result that only 13% of respondents consider changes to the security system to be important from a total of 3,300 companies worldwide as respondents. This lack of awareness results in the emergence of security holes that can be used by crackers to enter and disrupt the stability of the system. Every year cyber attacks increase significantly, so that every year there is a need to improve the security of the existing system. Based on that, a method is needed to periodically assess system and network security by using penetrarion testing methods to obtain any vulnerabilities that exist on the network and on a system so as to increase security and minimize theft or loss of important data. Testing is carried out by using internal network penetration testing method which tests using 5 types of attacks. From the results of the tests, each system has a security risk of 20-80%. From the results of these tests it can be concluded that each system has a security vulnerability that can be attacked.

Keamanan Jaringan dengan Cowrie Honeypot dan Snort Inline-Mode sebagai Intrusion Prevention System

2021 ◽  
Vol 5 (1) ◽  
pp. 180-186
Author(s):  
Tati Ernawati ◽  
Fikri Faiz Fadhlur Rachmat
Keyword(s):  
Network Security ◽  
Computer Network ◽  
Security System ◽  
Network Resources ◽  
Process Data ◽  
Network Systems ◽  
Intrusion Prevention ◽  
Prevention System ◽  
Intrusion Prevention System ◽  
Resources Sharing

Computer network systems have been designing to share resources. Sharing resources process, data security, and confidentiality are main issues in anticipating misuse of the access to information by unauthorized parties. The solution to anticipating these problems is the availability of a security system capable of handling various intruders who threaten the system and protect network resources. This study builds and analyzes the performance of computer network security using cowrie honeypot and snort inline-mode as an Intrusion Prevention System (IPS). The development process goes through the stages of analysis, design, implementation, and monitoring. The content analysis method has been using to explore the problems and requirements of the system built. The security system was build by configuring the IP address and network system devices (server, remote admin, client attacker). The test has been carrying out on 3 test parameters (confidentiality, availability, and integrity), comparison testing method has been using to test the integrity parameters. The test results indicate that the system functionality test for user needs have fulfilled, the results of the confidentiality test (83.3%), availability (93.3%), and the integrity of the inline-mode snort show faster response time (0.069 seconds on average) and more CPU resource usage efficient (0.04% average) than the cowrie honeypot. IPS snort inline-mode overall integrity parameter testing is more recommended for used network security systems than cowrie honeypots.  

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