Configure a Firewall for FILESTREAM Access
To use FILESTREAM in a firewall-protected environment, both the client and server must be able to resolve DNS names to the server that contains the FILESTREAM files. FILESTREAM requires the Windows file-sharing ports 139 and 445 to be open.
To open the Windows file-sharing ports on a computer that is running Windows 7
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In Control Panel, open Windows Firewall.
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In the left pane, click Advanced settings. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
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In the Windows Firewall with Advanced Security dialog box, in the left pane, click Inbound Rules, and then, in the right pane, click New Rule.
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Follow the instructions in the New Inbound Rule wizard to add TCP port 139.
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Repeat the previous step to add TCP port 445.
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Close the Windows Firewall with Advanced Security dialog box.
