- Slides: 6
Wireless Network Security
How Does Wireless Differ? Wireless networks are inherently insecure because data is transmitted over a very insecure medium, the air.
Security Concerns § Types of attacks § Passive Attacks § Eavesdropping § Active Attacks § Registration of a Malicious Node § Replay Attack § Denial of Service § Common flooding § Rogue access point § Man in the Middle Attacks
Goals § Availability § Require network assets are available when needed and ensure the survivability of the network services despite DOS attacks § Confidentiality § Ensure that certain information is never disclosed to unauthorized entities § Routing information must also remain secure § Integrity § Guarantees that the information being transferred is never altered
Challenges § Attacks can come from all directions and target any node § Damage can include leaking secret information, interfering message delivery and impersonating nodes § Have inadequate physical protection and therefore the network can be more easily compromised
Solutions § MD 5 with 128 -bit encryption § Keeps information confidential § With a shared random number prevents replay attacks § Prevent unauthorized access using MAC filtering § Physical security § Secure the building and shield it from outside interference