--- In firebird-support@yahoogroups.com, Mark Rotteveel <mark@...> wrote:
>
> On Wed, 19 Oct 2011 06:06:43 -0000, "gwc8182" <gwc8182@...> 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(!).
>


The client is running Avira without any internet/firewall component.
This was disable allow with Windows Firewall during the test.
Server was not installed with any antivirus currently.


Thanks