From the course: Learning Cryptography and Network Security
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Dissecting the Authentication Header
From the course: Learning Cryptography and Network Security
Dissecting the Authentication Header
- [Instructor] When using IPSec the authentication header provides connection with support for data integrity and authentication of packets and protection against replay attacks. The authentication header authenticates as much as the IP header is 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. Now, when setting up IPSec, a security association is created between the two communicating entities. Now, this is created to provide the attributes that are necessary for the authentication header process. Within that security association, there's different bits of information that is traveling that will show the following, to help the communication. The following includes things such as the destination address, the security…
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