Wireless Networks- Lecture 9:WLAN Security

Introduction
Although wireless networks offer many advantages like its convenience, and ease of installation, it still suffers from many threats that
occur due to the use of the radio signals through the open wireless medium (air) where the network can be hacked.
Objectives of the WLAN Security
There are many security objectives that must be satisfied by security solutions, these objectives in WLAN are the same as in the wired networks, and they are:
1. Authentication: ensures that only authorized users can communicate with the network, by verifying the identity of the users and allow their access to the network and its resources after they pass the authentication process successfully.
2. Data Confidentiality: ensures that any information transmitted throughout the network cannot be read or accessed by any unauthorized users.
3. Data Integrity: preserving the sanctity of the information that transmitted between authorized users in the network by detecting any changes in the information that happened due to the corruption, destroying, and changing before reaching its destination.
4. Availability: ensures that users can access the network and its resources at any times they need.
5. Intrusion detection and prevention: wireless intrusion detection services (IDS) and Intrusion prevention services (IPS) must detect and prevent any security threats from accessing the network, also it must prevents the user from accessing the resources of other users