From eScan Wiki
Q. How do eScan Clients get updated?
A. As soon as an eScan Client starts, it will look for (poll for) an eScan Server. This operation is similar to how a DHCP Client looks out for a DHCP Server.
As soon as the Client receives the IP address of the eScan Server, it will send update requests to the eScan Server at pre-specified time intervals.
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