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How Does Windows file share work over WAN?  What ports and protocols are used?

Tags: Networking
I am using an Outlook application that connects from the client machine to the server using named pipes.  When I try to connect to the database from the client using the IP of the server it fails.

Using a tool called AppSight (it is like a black box that can record everything the application is doing), I see that the application is trying to run the following command:
Open \\[Server IP Address]\Pipes\wkssvc
and this operation fails.  It is obviously trying to open a file on the client but is not able to.

There is no firewall running on client or server.  I am able to connect to the server when I put the client on other networks, just not a few specific ISPs, so I assume they are blocking this port.

I am hoping that I may be able to work around this by doing some port forwarding.  Any help would be appreciated.
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Question Stats
Zone: Networking
Question Asked By: cheyjey
Question Asked On: 06.04.2008
Participating Experts: 3
Points: 125
Views: 0
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