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Exhibit A <br /> <br /> <br /> <br />architecture when designing and/or implementing applications or installing network devices on departmental <br />resources. <br /> <br />Web Based Applications and/or Servers <br /> <br />Web Based Applications should be based upon Microsoft Internet Information Server unless there is <br />compelling business needs to use some other Web Server environment. <br /> <br />Web Servers will be installed on a separate and isolated Ethernet network segment behind a departmental <br />firewall. <br /> <br />Web Servers must not host Applications. Applications must reside on a separate Application Server on a <br />separate and isolated Ethernet network segment behind a departmental firewall. <br /> <br />The departmental network is TCP/IP based. <br /> <br />As the default profile of the firewall is to deny all incoming and outgoing traffic, DPS divisions and/or their <br />vendors must provide all source and destination addresses, port numbers, and protocols required for <br />network communications. In addition, they must provide a written business need for the network <br />communications. <br /> <br />Database Applications and/or Servers <br /> <br />Database Applications should be based upon Microsoft SQL Server unless there are business needs to use <br />some other Database Server environment. <br /> <br />Database Servers will be installed on a separate and isolated Ethernet network segment behind a <br />departmental firewall. <br /> <br />The departmental network is TCP/IP based. <br /> <br />As the default profile of the firewall is to deny all incoming and outgoing traffic, DPS divisions and/or their <br />vendors must provide all source and destination addresses, port numbers, and protocols required for <br />network communications. In addition, they must provide a written business need for the network <br />communications. <br /> <br /> <br />Email Based Applications and/or Servers <br /> <br /> <br /> <br />Email Based Applications should be based upon Microsoft Exchange Server unless there is compelling <br />business needs to use some other Web Server environment. <br /> <br />Email Servers will be installed on a separate and isolated Ethernet network segment behind a departmental <br />firewall. <br /> <br />The departmental network is TCP/IP based. <br /> <br />As the default profile of the firewall is to deny all incoming and outgoing traffic, DPS divisions and/or their <br />vendors must provide all source and destination addresses, port numbers, and protocols required for <br /> <br />