ODBC Connection Thru Firewall Port


I would like to check with anyone if there are any other ports needed to be opened on the Firewall except port 1433?

What I am trying to do here is to create an ODBC connection from the IIS5.0 server to the SQL server behind a firewall.

Any help is greatly apprecaited.


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ODBC Connection TCP/IP Port Problem


We have ODBC connection problems with some client installation.
Some of them need to have the port number given in the client connect part of the ODBC setup while other (with
the same client version) can use the "dynamically determine port" option, even when the port number is not SqlServer default (1433).

Has someone an idee why this happens and what to change so every connecition can use the dynamic option ?


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Firewall Port Forwarding To SQL Server


Is there any concerns or problems with forward a port to SQL server
from our internet firewall so that you can access the databases over the internet? Is it a standard practice to do this in order to remotely access the SQL server. Or is there a better way to do this? Also, if it is ok to do this are any things you need to do to enhance your security from vulnerabilities being open to the internet.

Any suggestions or comments would be appreciated on this subject.


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Security - Port - Firewall - Conection - Acessibility

Now I really need you help. I have an application that needs to conect to a server
over the internet and I have change the MSQL port to 2015 cos the server even with a
firewall it has been attempt to be hacked. So I needed to change the port but my application
cannot conect to the server if I change it. If I left in the firewall 1433 and SQL it works fine
but once I change it to 2015 it doesnīt work.

Iīm using ADO conection as folow:

Variables string parameters:
04=server IP adress

"Provider=SQLOLEDB.1;Password='+01+';Persist Security Info=True;User ID='+02+';Initial Catalog='+03+';Data Source='+04;"

Using this conection string I can conect to the server using 1433 port but if I change the port I get the folow message:

"[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied."

Iīd try to add the new port number to IP adress but it doesnīt work as ( and it return the folow message:

[DBNETLIB][ConnectionOpen (ParseConnectParams()).]Invalid connection.

What I need to know or to do? Please somebody help me cos I donīt know more what to do and my superiors need awnsers.
Thanks for attetion.

Leonardo Almeida.

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Windows Firewall Port Needed For Reporting Services 2005

Leon writes "I am trying to connect to a W2K3 Server's 2005 Reporting Server through my laptop's (WXP Pro SP2) SQL Server Management Studio.

I turned Port 1433 on in the server's Windows Firewall and was able to connect to the server's database engine from my laptop, but I have to turn Windows Firewall on the server off completely to be able to connect to the Reporting Server.

I have tried all the ports listed for SQL Server in the Microsoft documentation (TCP and UDP), but they seem to have no effect.

Can anyone tell me which port or ports I need to turn on in the server's firewall so that I can access Reporting Services through my laptop's SSMS?

Thanks in advance.


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ODBC Tries To Connect Through The Wrong Port


I've been running some tests with a 3rd party application during the last few days, but the ODBC doesnīt seem to be working well.

The ODBCs are configured to go through specific ports, since there's a firewall between the server (production area) and the database (which is located in the dev area). If i press the TEST CONFIGURATION button after i configured the ODBCs, the test is successful, and the log file of the firewall monitor shows that the server is connecting through the designated ports.

But when i run the 3rd party application, the queries fail, showing an error that says "The server cannot be found or you donīt have access", after this error, another one appears, saying something like "Connection().opened..." - unfortunately I don't have the actual text, I'll try to post it as soon as i get them .

Just to make sure that the 3rd party app is doing its job, dev team wrote a simple VB6 app to query the database, and it shows the same error.

Both apps are running well in the dev environment, since dev machines don't have to go through the firewall, and both apps are using the ODBC configured in the same way as the server. I could think that the problem is the firewall, but the firewall logs show that the production server is trying to use ports 1433, 1434, 445 and 139, and there isnīt a single entry showing activity for the ports specified on the ODBCs configuration.

The database server is running SQL Server 2000, the dev pcs are running Windows 2000, and the ODBC driver version is 2000.85.1117.00.

On the Production environment the server that is trying to access the database is running Windows 2003 Server Ent Ed. SP 1 , and the ODBC driver version is 2000.86.1830.00

I hope some one outthere has any ideas to solve this problem, or at least any idea of what is causing this error, because iīm running out of them.

Thanks in advance.

Efrain Morales

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ODBC TCP/IP Dynamically Determine Port Check Box

Hopefully a simple answer:

*editted for clarity*

Where does the "Dynamically determine port" check box come from when creating a ODBC connection using TCP/IP in the client configuration? Only shows up in the control panel/adminstrative tools/Data Sources (ODBC) when it is installed. I have 3 computers here that have it (they are for development) but I am finding my users desktops do not have the box and so I am getting errors trying to connect from their desktops.

I am using Excel and Microsoft Access 2000 to connect to the server using the ODBC connection.

I need my users to connect to SQL Server 2005 so I need the "Dynamically determine port" box checked to find the port. Tried typing in the port but that isn't solving the problem or answering my question. So far I have tried MDAC and .NET 2.0 platform installs with no luck.

Thanks for the help,

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I am trying to connect a web app to a SQL 2005 that is behind a firewall.
The challenge is this, the SQL is behind a firewall and the webserver is at a different location.  From my desktop development environment, I connect through a VPN first and then can point to the internal IP of the DB server.  This works fine as long as the VPN is connected.
But how do I do this from a hosted web application that is not on my local machine or using my VPN?
Is there some sort of tunneling Connection that I can use within code?

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Sql Server Connection Over Internet && No Firewall


Trying to connect sqlserver client wiht sql server desktop engine over internet. Here is the connection string

conString = "Provider=SQLOLEDB.1;Persist Security Info=True;Initial Catalog=" & dbName & ";Network Address=" & IPAddress & ";Data Source=" & DataSource & " ;User ID=" & UserId & " ; Password=" & Password

there is no firewall. Because i m trying in one room with two computers connected directly with the internet. I want this to be confirmed that any window operating system like win98 or win 2000 would do the work or there is any restriction.

i must also put here that the ping is not even working. this could be the main problem. i m not a master of network. so plz guide me out of this scene.

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I'm trying to adminster a remote MS SQL server from inside my company's firewall. I have the correct permissions to pass traffic through the firewall, but I need to authenticate to it first. When I try to register this remote SQL server through Enterpise Manager, it of course does not let me because of the firewall. Is there any way I can pass the firewall ID and password during the server registration process, and then pass the SQL server ID and password? I'm no SQL server expert by any means, but it doesn't look like it's possible. Are there any third party utilities that may accomplish this?

Thanks for the help!


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I am running SqlExpress on a Vista machine as a server and accessing it from machines running XP. I could not connect with the Vista server until I turned off the firewall, despite creating exceptions for both the sqlexpress and sqlbrowser services in the firewall setup. Obviously, I don't want to run on a wireless network without a firewall for any length of time. What else to I need to enable in order to run with my firewall up? In SMSS, I could 'see' the Vista server on the network with the firewall up, but I could not 'see' the SERVERSQLEXPRESS service or connect to it .



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Connection TCP/IP Through The Port 1433

Witam!Mam problem z polaczeniem sie z baza danych po TCP/IP przez port domyslny1433, nie mozna sie telnetowac ani nic z nim zrobic, poprostu niezyje. Portjest zamkniety i nijak nie moge go zmusic do jakiejkolwiek komunikacji nawetpo localhoscie. Skaner portów wykrywa go jako zamkniety. Czy wiecie moze jakten port otworzyc i zmusic go do komunikacji z baza danych? OS win2k3,MSSQL2000 Server.PozdrawiamHello!I have a problem with a TCP/IP connection to Data Base through the 1433port. I cannot telnet on this port even on localhost. My firewalls aredisabled but port scanner see the port as closed. Protocol TCP/IP on theMSSQL Server is enabled and it's not hidden, so I don't know what I shouldto do. My configurations: Win2k3 Server, MSSQL Server 2000Thx for answers.

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How To Specify The Port In Connection String

my application connect a sql server which was name instanced.
And the sql server browser was stopped, so i need to specify the port in connection manually .

i try this:

server=xx.xx.xx.xx,1433mssqlserver2;database=master;uid=xxx;pwd=xxx; it always return a error message:

An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that
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any suggestions?


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I apologize if this is not the correct forum for this posting. Looking at the descriptions, it appeared to be the best choice.

I am running Windows XP Pro SP2. I have installed the SQL Native Client for
XP. However, when I try to add a new data source through ODBC Connection
Manager, SQL Native Client is not listed as an option. I have followed this procedure on three other systems with no problems. What would be causing the
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I've mapped a sqlserver machine within vs2005, but when I attempt to set the database connection, I dont see place to stick the port number (even in the advanced area)... it continues to fail when I test the connection.. I can telnet into the machine on the sql server port, so I know its open to me...
Also - when I publish this to an IIS server, what is the syntax for placing the connection and port number in web.config?  I've tried various settings, cant get it to work. <appSettings><add key="con" value="Server=;PORT=1234;UID=*****;PWD=*****;database=mydb" /></appSettings>
Thanks in advance for the help,

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How To Change Default TCP Connection Port In SQL 2000?

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For security reasons, IT switched the send-mail porton the smtp server from 25 to a different number (let's say 1234).

So, I changed the SSIS SMTP Connection Manager's smtpServer string to smptserver:1234

However, this does not seem to be working. I keep getting 'Send Mail Failure' error.

Any ideas how to set the port number for sending emails using SSIS?

thanks much,
Cobalt Group

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How can I allow the server to allow this.

Any help appreciated


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userid = myuid

password = mypassword

when i used the port 3036 i got the can't connect to MySQL on server blabla(10060)

when i used the port 8087 i got the "Lost connection to MySQL during query.

How do i connect successfully?

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We are using Access as a front end to a DB we house on a SQL 2000 SP2 box. I have 2 users utilizing this front end and they keep recieving these two errors
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Hi everyone

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