By Naganand Doraswamy
IPSec, moment variation is the main authoritative, finished, obtainable, and up to date advisor to IPSec know-how. top experts disguise all features of IPSec structure, implementation, and deployment; evaluation very important technical advances when you consider that IPSec was once first standardized; and current new case reports demonstrating end-to-end IPSec protection. New insurance additionally comprises in-depth assistance on rules, updates on IPSec improvements for large-scale firm environments, and masses extra.
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Additional info for IPSec (2nd Edition)
The keys used for the IPSec SAs are, by default, derived from the IKE secret state. Pseudo-random nonces are exchanged in Quick mode and hashed with the secret state to generate keys and guarantee that all SAs have unique keys. All such keys do not have the property of perfect forward secrecy (PFS) since they're all derived from the same "root" key, the IKE shared secret. To provide PFS, Diffie-Hellman public values, and the group from which they're derived, are exchanged along with the nonces and IPSec SA negotiation parameters.
1.. 1. IPSec Roadmap (this figure has been reproduced from the draft with permission of the authors) IPSec is a suite of protocols and it is important to understand how these protocols interact with each other and how these protocols are tied together to implement the capabilities described by the IPSec architecture. The IPSec architecture, as described in the previous chapter, defines the capabilities the hosts and gateways should provide. For example, IPSec architecture requires the host to provide confidentiality using ESP, and data integrity using either AH or ESP and antireply protection.
It is easier to provide security services per flow (such as a Web transaction) as the key management, the base IPSec protocols, and the network layer can be integrated seamlessly. • All IPSec modes are supported. Bump in the Stack For companies providing solutions for VPNs and intranets, OS integrated solution has one serious drawback. On the end hosts, they have to work with the features provided by the OS vendors. This may limit their capabilities to provide advanced solutions. 3. This is commonly referred to as Bump in the Stack (BITS) implementation.