Network administrators may choose to add encryption to wireless networks to protect communications against eavesdropping. Learn how to apply encryption technology to protect wireless network connections, including the differences between WEP, WPA and WPA2 encryption and the TKIP and CCMP protocols.
- [Instructor] Network administrators may choose to add encryption to wireless networks to protect communications against eavesdropping. Wireless encryption is a best practice for network security. Encryption hides the true content of network traffic from those without the decryption key. It takes an insecure communication technology, radio waves, and makes it secure. You have four options when it comes to wireless encryption. Two of them are bad. First, using no encryption at all and sending messages in the clear, open to anyone, leaves everything on the network vulnerable to eavesdropping.
Second, using a technology known as Wired Equivalent Privacy, or WEP, uses very weak encryption that is easy to hack. There are two options for wireless encryption that are much better. Wi-Fi Protected Access, or WPA, uses the Temporal Key Integrity Protocol, or TKIP, to add security that WEP didn't have. TKIP changes the encryption key for each packet, preventing an attacker from discovering the key after monitoring the network for a long period of time.
Security researchers have demonstrated some theoretical attacks against WPA but it is still widely used and considered safe. The current best practice for Wi-Fi security is using WPA version 2. WPA2 uses an encryption protocol that is based upon the Advanced Encryption Standard or AES. This protocol has a really long name. It's Counter Mode Cipher Block Chaining Message Authentication Code Protocol but you just need to know it as CCMP.
Learn about communication and networking best practices, including TCP/IP networking, network security devices, and secure network design and management. Instructor and cybersecurity expert Mike Chapple also includes coverage of converged protocols, network encryption, and wireless networking. You can find Mike's companion study books for this series at the Sybex test prep site and review the complete CISSP Body of Knowledge at https://www.isc2.org/cissp-domains/default.aspx.
- IP addressing
- Switches and routers
- Content distribution networks
- Designing secure networks
- Specialized networking
- Managing secure networks
- Working with virtualized networks like SDNs
- Detecting and preventing network attaches
- Transport encryption
- Wireless networking
- Host security
Skill Level Advanced
CISSP Cert Prep: 2 Asset Securitywith Mike Chapple58m 11s Advanced
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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