Pdf wireless networks are relatively less secure than wired network because of easier access of unauthorized persons in coverage areas of access. The security and privacy implications of such incar networks, however, have are not well understood as their transmissions propagate beyond the connes of a cars body. Guidelines for securing wireless local area networks wlans. Security measures exist to ensure that the network is reliable. Securing your home network sans security awareness. The potential attacks and security services are summarized with the consideration of new service requirements and new use cases in 5g wireless networks. In a wireless network, the network interface adapters in each computer and base station convert digital data to radio signals, which they transmit to other devices on the same network, and they receive and convert incoming radio signals from other network elements back to digital data. Wpa, wpa2 these slides are based partly on lawrie browns slides supplied with william stallings s book cryptography and network security. In addition to preventing uninvited guests from connecting to your wireless network, wireless security protocols encrypt your private data as it is being transmitted over the airwaves.
Some of the key factors contributing to the higher security risk of wireless networks compared to wired networks include the following. The emergence of sensor networks as one of the dominant technology trends in the coming decades has posed numerous unique challenges to researchers. Hence wireless networks require secure access to the ap in a different manner from. Guides like this are designed to help educate administrators, and to help close the security gaps in wireless networks. They represented an isp, healthcare faci lity, an academic institution and a telecommuter. Wireless networks now operate over four orders of magnitude in data rate from zigbee at 20 kbps to wireless usb at over 500 mbps, and six orders of magnitude in range from nfc at 5. These networks are likely to be composed of hundreds, and potentially thousands of tiny sensor nodes. With proper configuration, only clients with correct ssid can communicate with the access points.
Fi protected access wpa protocol, wpa2, the ieee 802. This section describes commonly used authentication protocols and their properties. All unauthorized wireless devices and networks will be rendered inoperable and restricted from use until an approval is granted through the armys risk management framework rmf process. Wireless network security theories and applications discusses the relevant security technologies, vulnerabilities, and potential threats, and introduces the corresponding security standards and protocols, as well as provides solutions to security concerns. Boncella section iii summarizes the security problems and solutions when small, lowpowered devices try to use lowbandwidth wireless network technology to access services or dataintensive content via the internet. Physical security for wireless networks when installing a network, you are building an infrastructure that people depend on. Typically, wireless network security is delivered through wireless devices usually a wireless routerswitch that encrypts and secures all wireless communication by default. From basic concepts to designing principles to deployment, all critical concepts and phases are. Whether the network uses cables, wireless devices, kite strings and. Open networks allow anyone to connect to your wireless network without any authentication. To gain responses to these queries, two security experts, one network administrator and one wireless network.
But, in the wrong hands, these books allow almost any skill level attacker to breach wireless networks. Taking basic steps to secure your home network will help protect your devices and your information from compromise. Wireless networks have physical components, such as wires and boxes, which are easily disturbed. Many applications of wireless sensor network require secure data communications, especially in a hostile environment.
In order to protect the sensitive data and the sensor readings, secret keys should be used to encrypt the exchanged messages between. I intend to make a survey in wireless data security since wireless networks are very. All wireless networks and devices must be assessed and authorized prior to being approved to operate on the necs lan. Wireless networks are being integrated into the modern automobile. The advantage of a wireless network is the mobility and freedom from the restriction of wires or a fixed connection. This section provides an overview of the evolving wap protocol and its security features. Wireless and network security integration solution design. Todays home network may include a wide range of wireless devices, from computers and phones, to ip cameras, smart tvs and connected appliances. As a result, its very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources. Wireless network security threats and mitigationa survey. Cse497b introduction to computer and network security spring 2007 professor jaeger. Various wireless security protocols were developed to protect home wireless networks.
Cse497b introduction to computer and network security spring 2007 professor jaeger page security mechanisms note. Pdf data security in wireless networks researchgate. Do not hide the ssid as this adds no additional security to the wireless network and may cause compatibility issues. A wireless local area network wlan is a group of wireless networking devices within a limited geographic area, such as an office building, that exchange data through radio communications. Unauthorized association an aptoap association that can violate the security perimeter of the network. Wireless security and network management cisco community. If you fail to secure your wireless network, anyone with a wirelessenabled computer within range of your. Security in wireless mesh networks 5 abstract the masters thesis report describes the wireless mesh networks functions, characteristics, network management and finally different protocols with security issues and applications. The latter includes the wired equivalent privacy wep protocol, the wi. There is coverage of the security techniques used to protect applications downloaded by mobile terminals through mobile cellular networks, and finally the book addresses security issues and solutions in emerging wireless and mobile technologies such as ad hoc and sensor networks, cellular 4g and ims networks. Wireless networking security page 5 of 29 a service set identifier ssid is a configurable identification that allows wireless clients to communicate with an appropriate access point. Pdf a comparative analysis of wired and wireless network. This data communication and networking network security multiple choice questions and answers mcq pdf covers the below lists of topics.
Even if the wireless network security is compromised, the hacker is not able to. Limit administration to the internal network disable the ability to perform remote administration on the routing device. Network security 2 wireless networks have gained popularity due to the mobility offered by them. Be sure you do not use older, outdated security methods, such as wep, or no security at all, which is an open network. These wireless security protocols include wep, wpa, and wpa2, each with their own strengths and weaknesses. Wireless mesh networks wmns are replacing wireless infrastructure. My survey research may involve these following aspects.
All the multiple choice question and answer mcqs have been compiled from the books of data communication and networking by the well known author behrouz a forouzan. To get a better understanding of how and when wireless technology can be deployed this work will also present four scenarios and together looking back on the threats will elaborate a list security requirements for wireless networks. Ensure the password people use to connect to your wireless network is a strong one and that it is different from the admin password. In a wireless local area network wlan, an access point is a station that transmits and receives data.
Wireless security is nothing but protecting computers, smartphones, tablets, laptops and other portable devices along with the networks they are connected to, from threats and vulnerabilities associated with wireless computing. Pdf analysis of security in wireless network researchgate. To understand the risks associated with these wireless systems, this paper presents a privacy. This network topology can scale to form largescale networks with arbitrary coverage and complexity. Wireless networks have the same basic security considerations as wired networks. Aaa 1 access control server acs 1 buying recommendation 2 catalyst 9800 wireless controllers 9 identity services engine ise 3 mobility express 16 new document idea 1 other ideas 1. A study of wireless network security opus open portal to.
Securing your wireless network ftc consumer information. Security and privacy vulnerabilities of incar wireless. If the user is certified then authentication server sent the information to access point and establishes a dynamic access control list. Network security multiple choice questions and answers pdf. Again, this guideline does not cover security of other types of wireless or emerging wireless technologies such as thirdgeneration 3g wireless telephony. Wireless networks and security issues, challenges and. Encryption methods have improved, but so have the attacks. These slides are based partly on lawrie browns slides supplied with. Security risk assessment and countermeasures nwabude arinze sunday 2 it is therefore of uttermost importance to assess the security risks associated with the deployment of wlan in an enterprise environment and evaluate countermeasures to. The strategy we have adopted is to focus on the principles and to keep.
An access point connects users to other users within the network and can also connect the wlan to a wired network. Security requirements for wireless networks and their. Mobile devices need not be tied to a cable and can roam freely within the wireless network range. As a network administrator, you need to balance the need of legitimate users to access network resources against the risk of illegitimate users breaking into your network. Wep, wpa, and wpa2 security requirements in wireless networks wifiprimer wep and its flaws 802. The security of each wlan is heavily dependent on how well each wlan componentincluding client devices, access points ap, and wireless switchesis secured throughout the wlan lifecycle, from. This ensures efficient information sharing and boosts productivity. Wireless networks and security provides a broad coverage of wireless security issues including cryptographic coprocessors, encryption, authentication, key management, attacks and countermeasures, secure routing, secure medium access control, intrusion detection, epidemics, security performance analysis, security issues in applications.1222 1292 1023 1002 1268 901 268 133 43 320 974 418 1423 107 177 353 972 986 160 1268 567 624 549 1283 1154 809 1091 928 511 222