After completing this video, the learner will understand approaches to wireless authentication, including the use of preshared keys and enterprise authentication, EAP, PEAP and LEAP authentication and captive portals.
- [Voiceover] 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.…Preshared keys are the simplest kind…of wireless authentication and are commonly…used on home Wi-Fi 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 8 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…
This course is part of a six-course series on the CompTIA Security+ exam, and is useful for IT professionals who wish to learn more about information security as well as students preparing to take the Security+ exam.
We are now a CompTIA Content Publishing Partner. As such, we are able to offer CompTIA exam vouchers at a 10% discount. For more information on how to obtain this discount, please download these PDF instructions.
- Choosing encryption algorithms
- Applying symmetric and asymmetric cryptography standards
- Implementing key management, including key exchange and key stretching
- Working with public keys, trust models, and digital certificates
- Using transport encryption protocols
- Securing wireless networks
Skill Level Intermediate
2. Symmetric Cryptography
3. Asymmetric Cryptography
4. Key Management
5. Public Key Infrastructure
6. Transport Encryption
7. Wireless Security
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