- The Authentication Header provides connectionless support…for data integrity and authentication of packets…and protection against replay attacks.…The Authentication Header authenticates…as much of the IP header as possible,…as well as any upper-level protocols.…However, any field values that…change cannot be authenticated.…The Authentication Header can be used alone…or with an Encapsulating Security Payload protocol,…and may be used in either transport or tunnel mode.…
A Security Association is created…between the two communicating entities.…It is created to provide the attributes necessary…for the Authentication Header process.…Within that Security Association,…information that is traveling will show the following:…the Destination Address, the Security Parameter Index,…the IPsec Transform, which talks about…what it is as you see Authentication Header,…and using a Hash MAC-MD5,…the Key, and then Additional Attributes…as to how long this should be alive.…
This is an illustration of the Authentication Header Format.…
Author
Lisa Bock
Released
8/12/2015- Differentiate between confidentiality, integrity, and accountability.
- Compare symmetric and asymmetric encryption.
- Describe the Feistel Cipher.
- Differentiate between block and stream ciphers.
- Explain what Secure Sockets Layer (SSL) is used for.
- Define Internet Protocol Security (IPSec) and explain how it works.
- Explain the transport mode in IPSec.
Skill Level Intermediate
Duration
Views
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Introduction
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Welcome1m 17s
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1. Network Security
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2. Symmetric Encryption
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Using Wireshark to crack WEP4m 17s
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3. Asymmetric Encryption and Digital Signatures
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Managing keys3m 38s
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Using certificates3m 3s
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4. Hash Algorithms, Message Digests, and Authentication
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5. Secure Sockets Layer (SSL)
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6. Email Security
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7. Internet Protocol Security
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Using operating mechanisms3m 16s
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Conclusion
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Next steps55s
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Video: Dissecting the authentication header