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Unable To Connect to Remote SQL Server

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    Unable To Connect to Remote SQL Server

    ++++ THIS IS AN ADVISORY ++++++++++++++++++++++++++++++++
    ++++ SQL SERVER PORT 1433 NO ACCESS WITH FIREWALL ON ++++
    ++++ FIX IS TOWARDS BOTTOM OF POST ++++++++++++++++++++++
    +++++++++++++++++++++++++++++++++++++++++++++++++++++++++

    I was unable to connect from Alpha on my production machine to a New Windows 2008 R2 Server I am building with SQL Server Express 2008 with the Firewall Turned on. If the firewall was off, it worked fine.

    I did the usual and make sure Port 1433 was open on the Firewall, it was.

    I made sure TCP/IP was enabled and set to 1433 on Native Client Config Protocols the SQL Server Configuration Manager.

    After pulling out most of my hair, and wasted WAY too much time, I found it:

    On the SQL Server Network Config, Protocols Tab, you right click on the TCP/IP and go to properties. It shows it's enabled and listening, but there is a tab titled "IP Addresses". After clicking it, there is a listing of IP's, IP1, IP2, etc. Each showed they were active, but not enabled, and the TCP Port was blank. I scrolled to the bottom and there was a heading "IPALL" and the TCP Port was blank.

    I put in 1433 and voila. UP & RUNNING.

    I don't know what caused this to happen, but it did, and if I can help someone else not to go thru this, it is somewhat worth it. I know many Alpha users are afraid of moving to SQL due to it's daunting challenges. All I can say is, once I've got it running, I have never had a serious issue. I have one client with an old SQL Server 2000 on a Windows 2000 Server over 8 years old. It just keeps humming along, but once a month or so, it stops backing up. I reboot and all is well. Give it a shot, it won't hurt that much.
    ---------------------------------------------------
    Barry Kucher
    http://www.411tech.org

    #2
    Re: Unable To Connect to Remote SQL Server

    Little more for this subject.

    By defaul SQL Server 2005/2008 Express don't allow remote connections. You have to enable them.

    First when installing SQL Server 2005/2008 Express enable mixed mode.

    As Barry mentioned you have to enable TCP/IP protocol using properties in Protocols for SQLEXPRESS.

    When this is done you have to decide if you don't want to use port numbers with you connection strings. You can avoid this using SQL Server Browser service with SQL Server Express 2005/2008. Some don't use this feature for security reasons but many do.

    You enable this with SQL Server Configuration Manager. You have to check that SQL Server Browser service is enabled. Your firewall should have ports 1433(TCP) AND 1434(UDP)open. SQL Server use port 1433 and SQL Browser service use port 1434.

    Then use SQL Server management Studio Express in your local machine to test connection.

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