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2.4.1.1 Encrypting Files Across the Network 
File encryption and decryption requires the presence of EFS keys on the local computer where the files 
reside. When a user encrypts a file on a local desktop or laptop, EFS works with the Microsoft Crypto 
Provider to create EFS keys and to place those keys in the user's local profile. If the user attempts to encrypt 
a file across the network, EFS running at the server looks for the user's local profile at the server. EFS 
cannot access keys at a user's desktop because it does not have a security context anywhere except at the 
machine where it's running. This means that the server must have a local profile for the user that contains
both the EFS public key to encrypt the file and the EFS private key to open the encrypted file. To build the 
local private key, the Protected Storage service at the server must have a copy of the user's password hash so 
it can encrypt the Master key that protects the user's private key. It obtains this information by "user 
impersonation". This requires obtaining a Kerberos session ticket on behalf of the user to present when 
requesting the user's security credentials from a domain controller. A server has two ways of obtaining this 
session ticket: 
 
It can ask the Kerberos client at the user's desktop to obtain the session ticket and pass it over to the 
server. Such a ticket would be marked as forwardable; or 
 
The server can ask the Kerberos client for a ticket-granting ticket (TGT) that it can use to obtain its 
own session tickets as if the server were the user. The TGT would be flagged as proxiable. 
 
However, before a server submitting forwardable and proxiable Kerberos tickets and TGTs to create 
encrypted files for network users, it must be Trusted For Delegation. This option is configured in the 
server's Computer object in Active Directory.
 
 

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MCSE Certification Boot Camp

PASSING GUARANTEE
Vibrant acknowledges that success in a Boot Camp is the result of joint efforts of the student and the training provider. It is therefore not possible for a training provider to unilaterally guarantee success in a Boot Camp. Unless the student puts in the requisite efforts, success in a Boot Camp will be elusive.

Vibrant, however, guarantees to provide the environment, infrastructure and training methodology which will make success in the Boot Camp inevitable assuming the presence of corresponding efforts from the student.

Vibrant, therefore, provides passing guarantee with the following terms :

If you are not able to pass any (or all) of the exams, you can attend the course (or courses) again at Vibrant free-of-cost with the following conditions :

1- You can attend classes in a scheduled Boot Camp listed on our website. The Boot Camp should have a seat available and should not have been cancelled due to nil registrations.
2- You will have to pay the cost of Hotel stay, meals, air-fare, tests and any other third-party service. The courseware has to be carried back by you.
3- The guarantee entitles you to attend only the course for which you have failed an exam. Other courses cannot be substituted in this guarantee.
4- You are entitled to re-attend within one year of completion of the Boot Camp.
5- Also if you fail an exam, the current Boot Camp will continue to run as scheduled and the retraining can be availed only after completion of the current Boot Camp.

 

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