On Wed, 19 Oct 2011 06:06:43 -0000, "gwc8182" <[email protected]> wrote: > Hi everyone, > > I have encountered a weird network problem and have no idea what might be > the cause of it. > > Background info: Using Firebird 2.0.5 > Program is written on Delphi with BDE. > Server is Windows 7 Ultimate > Clients are running mixed of Windows 7 Starter, Home Premium, WinXP, Vista > Home Premium. > > Client connection path to the database is using TCP/IP > > > Situation: Client's program frequently shows > Error writing data to the connection > An existing connection was forcibly closed by the remote host
Also check presence and configuration of virusscanners, firewalls or other IDS systems on both client and server. In the past I have seen virusscanners which would forcibly close connections to not-well-known or 'suspicious' ports if a large volume of traffic was sent in a short amount of time (I think I have seen this with McAfee and I heard that NOD32 did as well). This was almost always on the client-side(!).
