Network Security refers to any activities that take place to protect the network; more likely to protect the usability, reliability, integrity, and safety of the network and data. Targeting the threats and stopping them to enter or spread on the network is the job of effective network security. Most common threats for any computer networks are: • Viruses, worms, and Trojan horses • Spyware and adware • Hacker attacks • Identity theft • Data interception To prevent these threats, multiple layers of security need to be implemented so if one fails, other stand. Anti-virus, anti-spyware, firewall are some of the components of network security system used to block unauthorized access to the network and Virtual Private Network (VPNs), to provide
This paper presents a study of benefits of artificial noise generation based on wireless communication to improve the security of messages transmitted through wireless channel which is vulnerable to eavesdropper. Artificial noise generation: The secure transmission of information in wireless networks without knowledge of eavesdropper channels or locations is considered. Two key mechanisms are employed: artificial noise generation from system nodes other than the transmitter and receiver, and a form of multi-user diversity that allows message reception in the presence of the artificial noise. We determine the maximum number of independently-operating and uniformly distributed eavesdroppers that can be present while the desired secrecy is achieved with high probability in the limit of a large number of system
Modern software market offers a plethora of spyware applications that do not differ from each other. However, the Spybubble has a number of benefits. First, this, at first gaze simple application, comprises all tracking needs of the most demanding users. Easy to use Control Panel will help you control all activities of the target phone.
The advantage of steganography over cryptography alone is that messages do not attract attention to themselves. Plainly visible encrypted messages — no matter how unbreakable — will arouse suspicion, and may in themselves be incriminating in countries where encryption is illegal. Therefore, whereas cryptography protects the contents of a message, steganography can be said to protect both messages and communicating parties. But, the growing possibilities of modern communications need the special means of security especially on computer network. Consequently, the security of information has become a fundamental issue.
It reduces the risk of attack. Web testing also provides us with debug and prevention of backdoor options. We need to protect our system and applications from the instrusions present. For this, we must follow certain rules - 1.) Monitoring is an essential part of an intrusion resilient data.
Misuse detection is used to identify previously known attacks for which they require before hand knowledge of attack signature. the disadvantage of this method is that prior knowledge of the attack is required and hence new attacks cannot be identified until new attacks signature have been developed for them. In anomaly detection system monitors activity to detect any significant deviation from normal user behavior compared to known user standard behavior, this type of intrusion detection can effectively protect against both well known and new attacks since no prior knowledge about intrusion is required. One of the most significant aspects of Intrusion Detection System is the use of Artificial Intelligence techniques to train the IDS about possible threats and gather information about the various traffic patterns to infer rules based on these patterns to distinguish between to differentiate between normal and intrusive
Plan to explore more extensive malicious attacks in addition to packet dropping and bad mouthing attacks using algorithm for dynamic redundancy management of multipath routing. The objective of dynamic redundancy management is to dynamically identify and apply the best redundancy level in terms of path redundancy and source redundancy, as well as the best intrusion detection settings in terms of the number of voters and the intrusion invocation interval to maximize in response to environment changes to input parameters including SN/CH node density of SN/CH radio range and SN/CH capture rate. Our algorithm for dynamic redundancy management of multipath routing is distributed in nature. For managing multipath routing for intrusion tolerance to maximize the system lifetime.
Steganography usually not designed to replace the cryptography but it helps in creating more secure communication after combining with cryptography by using best of both techniques. Thus it is proved that using cryptography techniques which use compression, hash function, automatic key generation, distortion process etc., the data becomes more secure and robust as compared to steganography technique alone. Thus the encryption of secret message and then hiding results in more secured
Due to this type of development, the information which is sending from the sender to the receiver, the panic of sneaking the data will be increased. For this security purpose, the concept of Steganography is used for the secure data transmission from the sender to receiver through the internet. It is a technique used to transfer a secret message from a sender to a receiver in a way such that a potential intruder does not suspect the existence of the message. The goal of Steganography method is to hide the secret message within another digital medium such as image, audio, text or video . Steganography is adapted from the Greek word Steganosgraphia which means "hidden or covered writing"
In today’s world the technology which is made wireless communication easier is Bluetooth technology which is used for transferring data in short range. People who are looking to gain information in an unauthorized manner is viewed very closely to any new improvement or invention. Security of data is very important aspect in Bluetooth .Bluetooth security has many other different versions of bluetooth regarding security and speed of transferring the data which is to be according to the need and demand .Mainly this paper covers man in the middle attack security issues .
• Deployment of intrusion detection system (IDS): as cited by Carasik and Shinder (2003), An Intrusion Detection System (IDS) is the high-tech equivalent of a burglar alarm—a burglar alarm configured to monitor access points, hostile activities, and known intruders. Though there was a firewall in the network architecture, but the present of a network intrusion detection device prevents unauthorized traffic to the network hosts. • Establishing an information security management system (ISMS): According to Iso.org, (2014), An ISMS is a systematic approach to managing sensitive company information so that it remains secure. It includes people, processes and IT systems by applying a risk management process.
It also allows for more granular control. For example, users can be given a range of granular control from read only to full Administrator on the documentation wiki. Some users in an enterprise do not need to and/or should not know about the inner workings of other systems on the network. There’s also the important question of where to store network passwords. It would probably not be recommended to store passwords on a wiki unless granular permissions are setup and Administrators are using strong passwords.
Metasploit’s exploit modules allow for privilege escalation (obtaining root or admin access) and SMB related attacks. For example, when testing client-side exploits at the Police Department, the exploits may fail due to their having limited user rights, requiring a tweak to the exploit module or payload. Another key feature of Metasploit is its meterpreter script, ‘getsystem‘, that will use a number of different techniques to attempt to gain SYSTEM level privileges on the target. This will assist the Police Department in closing privilege escalation attacks, which appear to have occurred in the
After the normalization module the request is passed on to the Protocol Validation and Analyzer module where it is matched against the semantic rules that are generated by ontological models in the knowledge base for identifying malicious content in input validation. Protocol Validation module caters to the violation of protocol specification whereas the Analyzer handles all other web application attacks. If the input content matches any of the rules the request is blocked and a log is made for the said attack. Also in protocol validation attacks, an attacker tries to send an abnormal request that does not follow the RFC 2616 (Hypertext, 2014) standards.
It offers a secure fitting together between internet browsers and websites, letting you to communicate secretive data online. Physical Layout • Topologies; topology can be measured as a computer-generated nature or construction of a system. This shape does not agree to the real physical plan of the policies on the computer network. • Ring; basically in a ring system each device (workplace, waiter, and copier) is related to two other devices, this systems a ring for the signs to travel around. Each packet of data on the network trips in one way and each device collects each box in turn until the journey 's end device receives it.