While some wireless networks are meant for open access by anyone who wishes to use them, most wireless networks limit access to authorized users. There are three primary mechanisms to authenticate the users of a wireless network: preshared keys, enterprise authentication, and captive portals. In this video, learn how to secure wireless networks, including the use of preshared keys and enterprise authentication, EAP, PEAP, and LEAP authentication, and captive portals.
- [Instructor] While some wireless networks are meant…for open access for anyone who wishes to use them,…most wireless networks limit access to authorized users.…There are three primary mechanisms to authenticate…the users of a wireless network.…Preshared keys, enterprise authentication,…and captive portals.…Preshared keys are the simplest kind…of wireless authentication and are commonly used…on home wifi networks.…In the preshared key approach, the network uses…a 256 bit encryption key to control access.…
Whenever a user wishes to connect the device to the network,…he or she must enter the preshared key on the device.…The preshared key may be entered directly…as a 64 character hexadecimal string,…but that's a pretty unwieldy approach.…Instead most networks use preshared keys…that ask users to enter a password consisting…of between eight and 13 ASCII characters.…The network then uses the PBKDF2 key stretching function…to convert that ASCII password into…a 256-bit network encryption key.…
I discussed the PBKDF2 function in the key stretching…
Note: This course is part of a series releasing throughout 2018. A completed learning path of the series will be available once all the courses are released.
- How IP addresses are assigned and managed
- Multilayer protocols
- VPNs and VPN concentrators
- Designing secure networks
- Firewall management techniques
- Maintaining network availability
- Software defined networking (SDN)
- Port isolation
- Network attacks
- How Wi-Fi networks function
- WPA, WPS, and propagation attacks
- Host-based network security control
Skill Level Advanced
Insights from a Cybersecurity Professionalwith Mike Chapple32m 15s Appropriate for all
1. TCP/IP Networking
2. Network Security Devices
3. Designing Secure Networks
4. Specialized Networking
5. Secure Network Management
6. Virtualized Networks
Port isolation1m 47s
7. Network Attacks
8. Transport Encryption
9. Wireless Networking
10. Host Security
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