wireless security
This paper represents the security issues related to the use of wireless (vs wired) LAN technology and recommends a number of key implementation guidelines to ensure the secure deployment of wireless LAN services in the company. As the primary differences between a wired LAN and a wireless LAN are at the Physical (PHY) and Media Access Control (MAC) layers, we have therefore limited the scope of this paper to addressing those security concerns related to the use of the wireless medium. The scope of this paper is also restricted to the IEEE 802.11b standard despite there being other similar but less widely adopted competing standards including HIPERLAN (Europe) and OpenAir 2.4 (US).In 1997, the first internationally sanctioned wireless LAN standard, 802.11 was approved by IEEE. This standard proposed three type of implementation for the physical layer (OSI layers) which is:* Infrared (IR) pulse position modulation* Radio frequency (RF) signalling in the 2.4 GHz band using frequency hopping spread spectrum (FHSS)* Radio frequency (RF) signalling in the 2.4 GHz band using direct sequence spread spectrum (DSSS)The IR method was not commercially implemented while the RF method suffers from low transmission
Protective MechanismThreat Spread Spectrum WEP Encryption Wireless Network Access ID Network Authen-tication Ethernet Address RestrictionEavesdropping Tampering Unauthorized Access & Spoofing Denial of Service Table 1: Summary of the key security mechanisms that can be implemented in a wireless LAN. To someone who does not have the correct frequency information, spread spectrum transmissions look no different from static or background noise. This is one of the vulnerability, which an attacker could exploit. WEP not enabled, no MAC address control list). Instead on relying on the shared static symmetric base key, a session key tie to a particular session could be generated for the symmetric encryption. render the MAC address and WEP key useless for wireless LAN access and decryption of transmitted data. Access control mechanisms such as firewalls should be implemented to segregate the wireless LAN from the internal wired network (Figure 2). Further developments were made on the original 2. Availability of Wireless LANSpread spectrum was developed during World War II to provide security for military radio communications.
Common topics in this essay:
LAN Instead,
Key Management,
DSSS IR,
LAN Wireless,
PDAs Software,
LAN RECOMMENDATION,
SECURITY THREATS,
DSSS FHSS,
Administration Maintenance,
wireless lan,
Privacy WEP,
unauthorized access,
wireless station,
wired network,
spread spectrum,
access control,
prevent unauthorized access,
prevent unauthorized,
internal wired,
access wireless,
internal wired network,
access wireless lan,
wireless network,
wireless lan security,
wireless station access,
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Acceptance Essays
