SQL server does not seem to be communicating. Port 1433 is open. SQL Configuration Manager used to turn on port 1433. SQL Management Studio used to turn on communications. "NETSTAT -an" on the server shows nothing listening on port 1433. Any ideas?
SQL Configuration Manager
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I am using Microsoft SQL Server Management Studio 17 to connect to a remote Microsoft SQL Server database. Looking at the connection dialog of Studio 17, I don't see any port number setting. Google tells me that Studio uses port 1433 by default.
I tried to use telnet to check if port 1433 is listening on the remote server: telnet example.company.com 1433
However, the connection failed. How can I find the port used for this database connection?
You could connect SSMS to your DB, run ProcessExplorer and examine the properties of ssms.exe. On the "TCP/IP" tab you possibly find what you are asking for:
Make sure you have connectivity to the server first. Since you mentioned "remote" there could be a firewall in the way, so your solution is going to depend on your network topology.
Can you ping the server? If ping works, I would reach out to the owner of the server and verify the DB connection parameters. Maybe your IP needs to be whitelisted. Etc. Etc.
Check if the server host has inbound port 1433 enabled, and whether TCP/IP is enabled using the SQL server configuration manager. If the SQL server instance in question sits on the cloud, you might want to check the specific provider's firewall rules on the container and adjust to permit 1433 inbound connections. The port setting entirely lies on where the actual SQL server instance sits. The management studio in your remote client will not be using any port.
I get the following message when trying to connect to SQL database from a remote machine using MS Management Studio with Server Name [ XX.XXX.XXX.XXX,1433\MyServerName ] and SQL authentication:
Cannot connect to XX.XXX.XXX.XXX,1433\MyServerName.
ADDITIONAL INFORMATION:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - The wait operation timed out.) (Microsoft SQL Server, Error: 258)
The wait operation timed out
I have done the following:
Allowed remote connection in Server Properties window in SQL Management Studio
Configured server machine to have static IPv4/DNS addresses.
Enabled TCP/IP in SQL Configuration Manager (in SQL Server Network Configuration)
In TCP/IP properties, adjusted [ Protocol -> Listen All -> No ] & set IP[1-8] to TCP port 1433 and IPAll port to 1433 (TCP dynamic ports left blank)
Set Inbound/Outbound enable connection (Domain, public, private) rules in Windows Firewall for ports TCP 1433, UDP 1434 (should make no difference, since port is specified), service executables: sqlbrowser.exe in C:\Program Files (x86)\Microsoft SQL Server\90\Shared (not used I think because port is specified) and sqlservr.exe in C:\Program Files\Microsoft SQL Server\MSSQL13.MyServerName \MSSQL\Binn
Set NAT actions in server-side router for ports 1433 (TCP), 1434 (UDP) (again, should not matter) to server's local IPv4 address and ports 1433, 1434 accordingly.
Made sure SQL service is running, ports are open and listening on server machine.
I can connect to the database on server machine using Windows or Sql credentials with either PC name, or machine's local IPv4.
Interesting thing is, when >telnet XX.XXX.XXX.XXX 1433 is run, it takes about 10-12 seconds to fail (Could not open connection to the host, on port 1433: Connect failed), but I can see the 2 packets coming to the router itself. Same with the login using SQL Manager - packets come to the router, but either server machine refuses (doesn't resolve?) the connection, or it doesn't even get to the machine.
Appreciate your suggestions.
Versions used:
MS SQL Server 2016 Express, MS SQL Management Studio 17, SQL Server 2016 Configuration Manager, Windows 10 Pro.
Have you tried telnet on 1433 locally?
Are you sure your local connection is using TCP/IP? By default, local connections use DBNMPNTW (named pipes) which uses shared memory on the back end for local connections and is faster than TCP/IP.
When SQL Server is working correctly on TCP/IP telnet will connect and leave you blinking waiting for protocol-- it doesn't hang for 10-12 seconds and fail.
If telnet works locally but not remotely, then you know the problem is in the networking layer (firewall, NAT, routing, etc.). If it does not, then the problem is in the SQL configuration setup. Did you restart the service after changing the connection settings?
I am using MS Server 2008 with MSSQL 2008-R2 as database server.
Each time for some work i have to login to server via Remote connection.I tried to configure
the SQL Server remote connection on, followed the following steps....
1.Created Inbound and outbound rules for tcp port 1433.
2.In sqlserver configuration manager ,all is set for IP address and POrt no properties.
3.Set the SqlServer instance for remote connections.
But still its not working.
Also when i checked port 1433 for tcp on local computer it is shown closed.
thanks in advance.......
Probably port 1433 is disabled, so enable it using MS WIndows firewall.
or just use
netsh firewall set portopening protocol = TCP port = 1433 name = SQLPort mode = ENABLE scope = SUBNET profile = CURRENT
Probably MS SQL Server Browser Service is not running. So go to Services and start it.
or just execute under Run menu
%windir%\system32\services.msc
Probably TCP/IP channel is disabled under SQL Server 2008/2014 Configuration Manager. SO go there and enable all TCP/IP options.
Just in case at the same place (SQL Server 2008/2014 Configuration Manager) make sure you have 1433 port.
Make sure that SQL server is configured to allow remote connections. Use MS SQL Management Studio and right click on the top node which server itself.
In the SQL Server Configuration Manager->SQL Server Network Configuration->Protocols, check that named pipes and tcp/ip are enabled.
If that doesn't work then it may be your firewall blocking it, try this link: http://msdn.microsoft.com/en-us/library/cc646023.aspx
This may be useful too:
http://support.microsoft.com/kb/287932
If named pipes and TCP/IP access are already enabled in SQL Server Configuration Manager, then you need to either add a rule for UDP port 1434, or a rule for sqlbrowser.exe so that the SSMS client can talk to the SQL Server Browser service.
I actually see people having this problem surprisingly often so I wrote up an explanation here: http://blog.dereenigne.com/microsoft-sql-server-dynamic-ports-windows-firewall-and-you/
If you're trying to connect to an SQL Server Express instance as is my case right now... it doesn't use port 1433 by default. One must check the IpAll => TCP Dynamic Ports in Sql Server Configuration Manager. Mine is 52848.
After entering the correct port 52848 in DbSchema app (the one I'm trying to use), it connected successfully.
Check the following screenshot:
This is the way to go:
The default SQL Server express installation does not enable TCP
network protocols, so here are some steps to take to be able to
communicate with SQL Server Express. These steps should be similar for
MS SQL Server Express 2017, 2016, 2014, 2012, 2008, and 2005.
Launch the SQL Server Configuration Manager. It should be in the Start -> Programs -> Microsoft SQL Server 2005 -> Configuration Tools start menu option.
Select the SQL Server 2005 Network Configuration tab. There should be a Protocols for SQLExpress option, and one of the protocols should be TCP IP.
Enable the TCP IP protocol if it is not enabled.
The default port for SQL Express may not be 1433. To find the port it is listening on, right-click on the TCP IP protocol and scroll all the way down to the IP All heading. There should be a section called TCP Dynamic Ports. This should list the port SQL Express is listening on. You can then put this value into the port field when adding the connection profile via RazorSQL.
Make sure to restart SQL Express before trying to connect.
Text kindly reproduced from:
https://razorsql.com/docs/support_sqlserver_express.html
I had multiple NICs in my server. When I went to SQL Server Network Configuration -> TCP/IP and right clicked for properties there was a list of the NICs and at the bottom was the open port for my SQLEXPRESS. It was not 1433..... I do not know if there is a default but mine was in the 49,000 s.
Unable to connect to our company MSSQL server from one of our FreeBSD servers.
# telnet 192.168.1.51 1433
Trying 192.168.1.51...
telnet: connect to address 192.168.1.51: Connection refused
telnet: Unable to connect to remote host
No firewall running on the MSSQL server, and i have opened the default port on the BSD-FW
00210 allow tcp from any to any dst-port 1433 in
00215 allow tcp from any to any dst-port 1433 out
Any ideas on this?
The specifics of the MSSQL server running on a Windows Server 2003
Test whether you can connect from another non-local machine. If not TCP connections may not be enabled for SQL Server. Here are instructions for enabling TCP/IP Connections with SQL Server 2000
I updated it MSSQL to Service Pack 4, and i'm now able to telnet to the server on the specified port. And also connect to the server from PHP with pdo_dblib
I have tried to remotely connect to SQL. I put in port 1433, I restarted the service, and I don't have Windows' firewall active. However, I can only use local connection, I can't remotely connect.
I read that SQL Server 2005 Express doesn't allow remote connection, but what about 2008? Does it allow remote connections?
You need to setup the server to accept tcp/ip connections.
This is done through the SQL Server Configuration Manager.
Start the manager, navigate to your server node and enable TCP/IP connections on it.