Firewall Port Forwarding To SQL Server
Apr 25, 2008
Hi,
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.
Thanks
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Aug 5, 2015
We have SSIS packages deployed and scheduled on SQL_Server_A. The packages have to access databases on SQL_Server_B, which is behind a firewall.
Question: would opening only SQL port between these two servers be enough or some other ports have to be open as well? (The packages only select and bring data back to Server_A or transfer data from Server_A to the databases and do inserts. Nothing else.)
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Jan 4, 2007
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.
LGR"
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Nov 5, 2004
I am trying to centralize my alerts and events forwarding using this feature in SQL server 2000. I setup event forwading in every one of my satellite SQL servers, however I am not getting any events or notifications.
Anybody has worked on this or know of any good information on this topic.
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Jul 20, 2005
My ISP recently had me reset my TCP/IP stack. After that, Norton PersonalFirewall prompted me twice that SQL Server was trying to access theInternet. Both times I responded to allow it to and to always use thataction. Now I am not able to use SQL Server with NPF enabled. If I disableNPF, SQL Server works fine.I am using the desktop edition of SQL Server 7, on a standalone PC, notconnected to a server. I have been using SQL Server and NPF together forover a year. Now, since my TCP/IP stack was reset, NPF interferes with SQLServer.Anyone have any experience with this?Thanks,Neil
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Jan 15, 2008
I have a problem regarding forwarding 'n number of parameters' from Visual Studio 2005 using VB to SQL-Server 2005 stored procedure.I have to save N number of rows in my stored procedure as a transaction. If all rows are not saved successfully, I have to roll-back else update some other table also after that. I am unable to handle - How to send variable number of parameters from Visual Stduio to Sql - Server ? My requirement is to use the SQL-Stored Procedure to store all the rows in the base table and related tables and then update one another table based on the updations done. Please Help .....
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Jan 6, 2000
I am trying to connect to SQL Server 7.0 from a web server. The web server is outside our firewall, SQL Server is inside the firewall. I want to use a multiprotocol connection so I can encrypt it. We have port 1433 open on our firewall for TCP/IP from SQL Server. When I connect with just TCP/IP it works. When I switch to multiprotocol it fails with error code 1701. I can connect to the SQL Server box from inside the firewall using multiprotocol.
My theory is that when you use multiprotocol you are using another port than 1433. Is this the answer?
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Aug 3, 2004
I have a simple asp page that queries a database inside our firewall. It works fine from the inside, and only uses port 1433. But if i put it out on our web server it won't connect and tries to use ports 139 and 445. Has anybody ran across this before?
Thanks,
John
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Jul 20, 2005
Hello,We use Informix and MySQL on linux/unix to drive our web application.SQL*Server is used only for backend enterprise applications within thefirewall. I am trying to get the management to use SQL*Server outside thefirewall. They tell me there are security issues with Microsoft products,including SQL*Server, that make it vulnerable to attacks outside thefirewall. Can someone please point me to white papers/documentation thatsuggests how SQL*Server can be used securely outside the firewall? I thinkif I put SQL*server on it's own box and open it up only to the applicationson our web servers, we should be secure. However, I need hard evidence.Thanks.- Rajesh
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Jul 27, 2006
I am using SQL Server 2005 Express + SP1 on a Windows Small Business Server(SBS) box. The SBS is connected to a client thru LAN.
Following are what I gave as IP address and DNS on the server:
IP: 192.168.16.2, subnet mask : 255.255.255.0, Preferred DNS server: 192.168.16.2, Default gateway and Alternate DNS Server blank
On the client, I have,
IP: 192.168.16.4, subnet mask : 255.255.255.0, Preferred DNS server, Default gateway and Alternate DNS Server blank
I can ping and connect to either of the machines.
If I do a sqlcmd -S "tcp:servernameINSTANCE,port", I get the following error message:
HResult 0x80090304, Level 16, State 1
SQL Network Interfaces: The Local Security Authority cannot be contacted
Sqlcmd: Error: Microsoft SQL Native Client : Cannot generate SSPI context
If I do a sqlcmd -S "tcp:192.168.16.2INSTANCE,port", it connects to SQL Server.
I have the Windows Firewall ON. If I Off the firewall, I do not have any problem at all.
I included File and Printer Sharing, sqlsvr.exe in the Exception list of the Windows Firewall.
Any help to solve the issue is appreciated.
Thanks.
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Jun 6, 2007
I cannot seem to find the definitive how-to guide for this. Can anyone point me in the right direction?
I have SQL Server 2005 (x64) already running on Windows 2003 R2 (x64). I'm having difficulty trying to expose it the Internet.
Using the Surface Area Configuration tool I can see that remote connections using TCP/IP is enabled. I also made the machine administrator a member of the SysAdmin role from here too.
In Windows Firewall "SQL Server" and "Web" are already checked as exceptions.
I know that SQL Server uses port 1433 and I also read somewhere that clients connecting to SQL Server communicate on a random port between 1024 and 5000. So, on my router (Netgear WNR854T) I'm forwarding ports 1024 through 5000 to the machine where SQL Server lives.
In my connection string I'm using the IP address of the SQL Server machine with ":1433" appended to the address. Yet I cannot connect to SQL Server. Am I missing anything?
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Apr 18, 2008
Hello,
I have purchased 4 new boxes for SQL2005 and my var database product all running on the new Windows 2008 server. A lot of silly mind bender issues but I am up and live now. However, what should the firewall settings be on my SQL database box? I have ultimately turned off Windows Firewall so that I could connect and continue forward.
Thanks!
Chris
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Jul 27, 2006
Hi There
Anyone have a good resource for a forwarding example ?
I have a distributed service broker application working but i would like to add a forwarder in the mix, all i can find in BOL is that you must create an endpoint for forwarding and create the correct routes on a frowarder but thats it.
Is that all you require ? AN instance with a forwarding endpoint correct routes ?
I am looking for an actual example, cannot find anything in BOL on how to actually implement it ?
I downloaded forwarder1.1 example from getdotnet.com, but that example sucks, it does even create routes ???
Thanx
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Apr 10, 2001
I have got a MTS Server and SQL server 7 in different boxes. However, MTS only communicates to SQL server when there is no firewall while it doesn't work when there is a firewall between them. Any idea I can solve this problem?
Many thanks.
William
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Jun 7, 2006
I have changed SQL Server port to 2433, and add it to exception in Windows Firewall, add executive files as in this KB http://msdn2.microsoft.com/en-us/library/ms175043.aspx
Want to change port of SQL Server Browser as well, but dont know how to :(
anyway, after enable Firewall, SQL server is stop working. How to get it working with Firewall? Also, if some one lets me know how to change port of SQL Server Browser too, it would be great
thanks
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Oct 16, 2007
Can anyone tell me if there's a recommended way to link from a SQL 2000 SP4 DB through a firewall to SQL 2005? I have tried with SQLOLEDB but this uses NETBios which is not secure. Or is there a way to tell it not to use NETBios?
SET @provdetail = 'DRIVER={SQL SERVER};SERVER=<IP address>;Trusted_connection=Yes'
EXEC Master..sp_addlinkedserver
@server = ,'<IP address>',
@srvproduct = '',
@provider = 'SQLOLEDB',
@provstr = @provdetail ,
@catalog = 'TestDB',
@datasrc ='<IP address>DB1'
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Apr 17, 2008
I have been triyng to find an explanation for this error everywhere, but so far have been unsuccessful:
Cyclical forwarding detected for event 17806: Event source was 'SP-MINCL-WDB04' which matches the current forwarding server. The event was not forwarded.
Does anyone know what this means?
Thanks!
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Jan 3, 2008
Hi,
I have a program continously updating an SQL (using Microsoft 2005 Server for Management) database, and I need to set up a way that when ever a certain column or tag is generated to the database, an alert is forwarded to my e-mail, through VB or C or whatever can handle this. Any help would be terrific, thanks.
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Feb 27, 2007
Hi There
I am doing the follwing , sending a message from initiator A to service73 at targetA.
I am profiling the initiator, forwarer and target.
At the initiator everything is 100%, at the forwarder message is forwarded 100%.
I am receiving the following error at the target:
Could not forward the message because forwarding is disabled in this SQL Server instance.
Now i have had these errors before, this was due to the fact that the service did not exist at the target or the service name was incorrect etc.
I have check , service73 exists and is fully functional at the target, all message types, contracts etc are all 100%.
Queue for service73 is enabled 100%
please help.
Thanx
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Jan 4, 2008
Hi,
I have a program continously updating an SQL (using Microsoft 2005 Server for Management) database, and I need to set up a way that when ever a certain column or tag is generated to the database, an alert is forwarded to my e-mail, through VB or C or whatever can handle this. Any help would be terrific, thanks.
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Jun 19, 2015
I have trying to access a 2nd SQL Server instances running on my WHS 2011 server from my Windows 8.1 Pro client.
The first SQL Server instance I installed is SQL Server 2014 Developer. This has been in place for many months and access from my client pc is not a problem. The Developer instance was installed using standard settings so uses TCP port 1433 and I have verified this by checking the firewall rules. This instance name is <SERVERNAME>
As I want to host a personal website on my server I installed SQL Server 2014 Express as a 2nd instance on my WHS 2011 box for website database purposes. After this installation both instances are accessible via Management Console on the WHS 2011 box.
The second instance is named as <SERVERNAME>SQLEXPRESS.
However, I am unable to access the SQLEXPRESS instance using Management Console on my client pc. I know it is a firewall issue as when I turn off the firewall on the WHS 2011 box I can connect successfully. The errors reported have resulted in my trying many things to resolve the problem but none have worked, e.g.
Use the default SQLEXPRESS instance to listen on all TCP ports (default installation option). I checked the necessary firewall rules were set up correctly and they were, i.e. UDP ANY and TCP ANY for the SQLEXPRESS sqlservr.exe file.
Change the default SQLEXPRESS instance to list on a specific TCP port, e.g. 19344
Create an ALIAS for the SQLEXPRESS installation
The instance is definitely set up for Remote Access and is not Hidden.
Are there any other firewall rules I need to apply?
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Aug 25, 2006
Hello,
My question is about allowing and securing connections to SQL Server 2000 over the internet. The company that I work for has an application server that several of our clients connect to via the internet using secure .NET remoting. Basically, the clients have a desktop application that they run that creates a remoting connection to our server software and we handle the server/database part. Anyway, one of our clients now wants to use Crystal Reports to run ad hoc queries on their data that is hosted on our SQL 2000 database server behind our firewall. Obviously, opening up a port in our firewall and allowing someone to run ad hoc queries on the database makes us all more than a little nervous about security.
Has anyone else here had to deal with this sort of situation before? We'd like to set up a secure, encrypted connection for this one client, but still keep it locked down for everyone else. Is it as simple as enabling encryption and generating SSL certificates for the client machine and our server? I've only been able to find a few resources that help with bits and pieces of the problem, never anything tackling the issue as a whole. If anyone has any thoughts, experiences, links, etc. to share it would be greatly appreciated. We are a small company and no one here has experience with this sort of thing.
Cheers!
Justin
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Mar 6, 2006
Hi,
I'm experiencing problems connecting remotely (through the Management Studio) to a named instance of SQL Server Express 2005.
After investigation I determined it was a firewall issue - turn off windows firewall and I can connect fine. I initially added ports 1433 and 1434 to windows firewall - still no joy. Then I added the binaries explicitly (sqlservr.exe and sqlbrowsr.exe - or whatever they are) - still no joy. So, I looked into the firewall log to see what was being dropped. I found that my IP was trying to connect via port 1047 (TCP)... I've searched for anything about this on google and cannot find any indication that the management studio should be using this port to connect.
If I add this port, the connection works fine. Has anyone else experienced this ? As there seems to be no way of modifying the management studio to connect via a specific port, I'm a bit concerned that something is just not right.
I would appreciate any advice you can give.
Thanks.
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Nov 6, 2015
We have a hosted server with a website and sql server 2008 on.
The windows firewall is turned on for all networks / profiles and says its blocking incoming traffic.
I see a lot of login attempts in the windows logs where hackers are trying to connect to it. I can also access it via SSMS from multiple external ips.
Everywhere I've googled says that incoming traffic should be blocked by default by the firewall.
There are no obvious rules that allow SSMS access.
If I do a blocking rule on inbound rules for a single ip that does work, blocking it from that ip, but any other ip's can still connect.
In the firewall log file I can see the allowed connections on port 1433 etc. other than the dropped one from the test blocking rule.
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Jun 8, 2007
Dim strCON As String = _
"workstation id=DJI-MAIN;packet size=4096;user id=sa;integrated security=SSPI;data source=DJI-MAIN;persist security info=False;initial catalog=RacingSystem"
Dim cnn1 As New SqlConnection(strCON)
cnn1.Open()
This is the code I have been using to connect to my default instance for 18 months. A recent upgrade to Windows Live onecare now prevents me connecting to the server from the same machine. The following error message is generated:-
Unhandled Exception: System.Data.SqlClient.SqlException: SQL Server does not exist or access denied.
at System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction)
at System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction)
at System.Data.SqlClient.SqlConnection.Open()
at TrainerReport001.Form1.Form1_Load(Object sender, EventArgs e) in F:#ProjectsStatsOwnerReport001Form1.vb:line 84
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)The program '[3336] TrainerReport001.exe' has exited with code 0 (0x0).
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow)
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.set_Visible(Boolean value)
at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at TrainerReport001.Form1.Main() in F:#ProjectsStatsOwnerReport001Form1.vb:line 2
If I turn off the onecare firewall I can connect as normal, but this is not a desired option. I have tried enabling port 1433 on the firewall, this does not work either. Any help greatly appreciated, onecare support seems reluctant to help.
TIA
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Feb 12, 2007
Hi,
I have to add the fields coming from the source AS IS but, I need to add current date as a column to it. So, What I do is to add an Script Component and add each and every output column in that along with defining their types and writing an "assignments" script.
Is there any possibility for me to save time in the scenarios where I am almost passing on the information to next level in the data flow ?
Any input regarding this will sincerely be appreciated.
Fahad
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Jul 20, 2005
I know that SQL Servers can be set up to forward alerts to a singleSQL Server. I am wondering if same would be true for the MaintenancePlan Reports. Basically, I want to have only one SQL Server on thenetwork that has the SQL Agent Mail profile set up, and to use thatserver for all e-mail and/or pager notifications for all alerts andevents raised by any of the SQL Servers on the network, includingMaintenance Plan reports. Is this possible? Is anything required toset this up beyond alerts forwarding?Alexey Aksyonenko
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Dec 7, 2007
Myself and a user have the same issue which is when we hit forward and type our reply, spell check checks the entire email. I want it to just check what I wrote.
We both have Ignore original message text in reply or forward checked off under, Tools, Options & Spelling
This does not help.
Any suggestions
Thank you,
Tom
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Nov 1, 2006
Hello,I am trying to connect with sql by using following connection string"server='serverIP'; user id='username'; password='xxxxxxx'; database='databasename';"If SQL Server 2000 server that is behind a firewall , I need to change it.Can anyone let me know what should I change in my Connection String.I am using Asp.net 1.x Thanks in Advance
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Apr 23, 2001
Hi all,
I am developing a 3-tier web app (IIS, MTS, SQLServer7). My problem is SQL Server 7 is not responding to MTS Server when there is a firewall in between.
However, when the firewall is removed, everything works fine, therefore I think the problem is not caused by the code.
I am very sure that port 1433 (the default port used by SQL7) is open in the firewall.
Please help because I am stuck with this problem for weeks and really stressed out.
Thanks in advance.
William
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Jan 5, 2001
Hi,
Could anyone tell me how the data can be ported from informix to sql server ?
Is there a way to run the informix query from sql server ?
Thanks,
Vijay.
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Feb 17, 2005
Hello. I'm a novice with SQL Server. I set up a SQL Server instance using Enterprise Manager and I want to find out what port that instance is listening to, because it's not listening to the default.
Is there a way I can specify a port for the server to listen to?
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Feb 21, 2005
Hello. I'm a novice with SQL Server. I set up a SQL Server instance using Enterprise Manager and I want to find out what port that instance is listening to, because it's not listening to the default.
Everything is on my local machine, this is a development database.
Is there a way I can specify a port for the server to listen to?
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