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Email Security Gateway Deployment > System requirements
System requirements
Deployment and Installation Center | Email Security Solutions | Version 7.8.x
Applies to:                                                                                                          
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Email Security Gateway and Email Security Gateway Anywhere v7.8.x
To view complete hardware, software, and Web browser requirements for Email Security Gateway, see System requirements for this version.
Every Email Security Gateway deployment includes the following components at a minimum:
In the DMZ
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Websense appliance (V10000 G2, V10000 G3, V5000 G2, or X10G), which includes the core Email Security functions and the Personal Email Manager end-user facility
Email traffic volume in your network may determine which type of appliance you use and how many appliances your deployment needs.
In the internal LAN
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TRITON Unified Security Center management server with both Email Security and Data Security modules installed on a Windows Server® 2008 R2 or 2012 machine
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Email Security Log Server
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Email Security Log Database (Microsoft® SQL Server® 2008, 2008 R2, 2012, or 2008 Express R2)
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Mail exchange server
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End-user machines
 
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Note 
All Email Security Gateway components must be synchronized by date and time for proper system communication.
The network DMZ contains the devices that have direct contact with the Internet. This zone is a buffer between the Internet and the internal LAN. In our examples, the appliance and any router, switch, or load balancer adjacent to the firewall are located in the DMZ.
Websense appliances
The Websense V10000 G2, V10000 G3, or X10G appliance provides the majority of Email Security Gateway functions. Incoming email flows from the email hybrid service (if enabled) to the Websense appliance and to the mail server. The Websense appliance also provides the Personal Email Manager facility for end users to manage quarantined email. Email Security Gateway can be installed and deployed on a dual-mode V10000 G2 or V10000 G3 appliance with either Web Security or Web Security Gateway.
Email Security Gateway can occupy individual blade servers on an X10G appliance. The X-Series chassis may include a combination of Email Security and Web Security blade servers.
The Websense V5000 G2 appliance also provides the majority of Email Security Gateway functions and includes the Personal Email Manager end-user facility. The V5000 appliance can also be configured in dual mode with Web Security.
TRITON management server
The TRITON management server hosts the TRITON Unified Security Center (TRITON console). This machine includes TRITON Infrastructure and any installed TRITON console management modules. In an Email Security Gateway deployment, the TRITON management server includes both the Email Security Gateway and Data Security modules.
Email Security Log Server
The TRITON management server often includes the Email Security Log Server component, although this component can also be installed on a separate machine. The log server passes information to the SQL Server reporting database (Email Security Log Database) for use in generating dashboard charts and reports, messages, and Message Log data.
During installation, a user configures certain aspects of log server operation, including how log server interacts with Email Security Gateway. These settings can be changed when needed via the Email Security Log Server Configuration utility. Other details about log server operation are configured in this utility as well. The utility is installed on the same machine as log server.
Email Security Log Database (Microsoft SQL Server)
Microsoft SQL Server handles the system and message log database and stores some Email Security configuration settings. SQL Server may be installed on the TRITON management server or on a dedicated server. For optimal performance, Websense recommends that a full SQL Server (2008, 2008 R2, or 2012) be installed on a separate machine. (SQL Server Express, which can be installed as part of the TRITON console installation, is recommended only for evaluation purposes.) For information about database systems in Websense products, see Administering Websense Databases.
Personal Email Manager
The Email Security appliance is the portal for Personal Email Manager end users who are authorized to manage their own blocked mail. Personal Email Manager end-user options are configured in the Email Security management server interface (Settings > Personal Email). A Personal Email Manager administrator can determine:
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Which end users can access the Personal Email Manager utility and which actions, if any, those users are allowed to perform on blocked messages
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What the blocked email notification message contains
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Which end users are allowed to manage personal Always Block and Always Permit lists
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Whether a user can manage multiple email accounts
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Whether a user can delegate email account management responsibilities to another individual

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Email Security Gateway Deployment > System requirements
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