Black Box ET0010A User Manual

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EncrypTight Overview
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EncrypTight User Guide
EncrypTight Element Management System
The EncrypTight Element Management System (ETEMS) is the device management component of the 
EncrypTight software, allowing you to provision and manage multiple encryption appliances from a 
central location. It provides capabilities for appliance configuration, software updates, and maintenance 
and troubleshooting for your EncrypTight encryption appliances. 
Policy Manager
The Policy Manager (ETPM) is the policy component of the EncrypTight software. You use ETPM to 
create and manage policies, and monitor the status of the PEPs and ETKMSs. 
Each deployment of EncrypTight uses a single ETPM. The ETPM sends metapolicies to one or more 
ETKMSs. A metapolicy is a file that describes the policies created in ETPM and for each policy it 
specifies:
The PEPs each ETKMS controls
The networks each PEP protects
The action that is performed (encrypt, send in the clear, or drop)
The kind of traffic the policy affects 
Key Management System
Distribution functions are provided by the EncrypTight Key Management System (ETKMS). All 
ETKMSs receive policies from a single ETPM. Based on the metapolicies received from the ETPM, the 
ETKMS generates keys for each of the PEPs within its network. The ETKMS distributes the keys and 
policies associated with its networks to the appropriate PEPs. 
Depending on the size and configuration of your network, you can use a single ETKMS or multiple 
ETKMSs distributed throughout the network. When multiple ETKMSs are used, each ETKMS controls 
different sets of PEPs. All ETKMSs include the policy information and keys for the entire network. When 
policies are deployed or keys are renewed, each PEP receives its information from its designated 
ETKMS. 
The EncrypTight system supports two types of ETKMSs: external ETKMSs and local ETKMSs.
External ETKMSs are dedicated computers running the ETKMS software. By running on a dedicated 
computer, external ETKMSs inherently provide more security and reliability, and can be used to help 
protect significantly larger networks. Each ETKMS can support several hundred PEPs. 
Local ETKMSs run as a separate process on the same management workstation as the EncrypTight 
software. Local ETKMSs are intended for use with small to medium networks with no more than 10 
PEPs. A local ETKMS is included with the EncrypTight software.
 shows a single ETKMS distributing the keys for PEPs A, B, C, and D.