>> For eScan to take updates from ISA Proxy server the following step need to be carry out at ISA proxy server
>Open the ISA management console.
>Expand the Server -> Policy Elements -> Client Address sets in the ISA tree.
>Create a Client address set named “eScan”. Enter the IP address of the server on which the eScan is installed. If it is
>installed on the ISA Server itself , make sure that the IP address specified is the internal IP address of the server (the
>private ISA server IP address).
>Expand the Access Policy object, and create a new rule in Protocol Rules.
>Right-click Protocol Rules, and then click New, name as eScan update rule.
>Select Rule action as allow , and then click Next.
>Select apply this rule to selected protocol and select ftp & http, and then click Next.
>Select always in use this schedule option, and click Next.
>Select specific computers, click Next.
>Add eScan in the client sets, click Next.