CSVPN Exam Cram 2 (Exam 642-511) by David Minutella

By David Minutella

CCSP CSVPN examination Cram 2 covers one in every of 5 tests had to develop into a Cisco qualified safeguard expert. the easiest promoting examination Cram 2 sequence is the neatest, best technique to turn into qualified. This e-book covers the data you want to understand to cross the examination, and provides learn advice and perform assessments that will help you ensure you are prepared on examination day.The CD contains PrepLogic perform assessments, Preview version, which deals a whole PrepLogic perform attempt, a try engine with research modes, perform try out and Flash evaluate, complete examination customization, and an in depth rating document.

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Extra resources for CSVPN Exam Cram 2 (Exam 642-511)

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Because this can be a daunting task, symmetric keys can also be exchanged dynamically by a method known as the Diffie-Hellman exchange. It is not necessary to understand the complex mathematical calculations for the Diffie-Hellman exchange. It is more pertinent to understand the utility of Diffie-Hellman and which groups Cisco supports. To dynamically obtain symmetric keys for bulk encryption in a secure manner, the sender has to encrypt keying materials to produce the symmetric keys with yet another encryption key called the secret key.

This is more flexible and less expensive than traditional remote office connections, such as packet-switched networks with frame relay and ATM, as well as leased line connections. Business-to-business extranet VPNs utilize VPN tunnels to connect to extranet business partners or other networks that are not part of the corporation. Access rights to the corporate network from the extranet should be defined by the corporation's security policy. [ Team LiB ] [ Team LiB ] 31 32 Cisco VPN Equipment and Software Solutions The following sections look at the specific solutions that Cisco offers for VPN connectivity.

If any bit was changed in the data transmission, the remote detects it when it performs the same hash on the message and they do not match. Cisco supports the HMAC variant of MD5 (128-bit) and SHA-1 (160-bit). IPSec peer authentication is a crucial step in IKE phase 1, in which the IPSec device validates the remote peer. Cisco supports the following three methods of peer authentication: preshared keys, RSA signatures, and RSA encrypted nonces. Preshared keys are manually configured on both devices of the IPSec tunnel.

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