WHY WE NEED TO ADD PORT NUMBER 1433 TO TCP/IP PROTOCOL INSTEAD OF UDP PROTOCOL
HELLO EVERYONE,
WHILE INSTALLING SQL SERVER I HAD ENCOUNTERED A WARNING MESSAGE REGARDING WINDOWS FIREWALL. AFTER SOME RESEARCH , I GOT TO KNOW THE STEPS TO TROUBLE SHOOT. IT SAYS I NEED TO GO TO WINDOWS FIREWALL AND ADD THE PORT NUMBER 1433 IN INBOUND & OUTBOUND
SECTION USING THE PROTOCOL- TCP/IP & 1434 TO INBOUND & OUTBOUND OPTION SECTION USING THE PROTOCOL OPTION - UDP.
I WANT TO KNOW CAN I ADD THE PORT NUMBER 1433 USING UDP PROTOCOL INSTEAD OF TCP/IP PROTOCOL IN FIREWALL SETTINGS ; IF NO THEN WHAT IS THE REASON?
AND WHY CANT WE HAVE USE ONE PROTOCOL : TCP OR UPD AND ADD THE PORT NUMBERS 1433 & 1434 FOR ACCESSING SERVER & SQL BROWSER SERVICES ?
PLEASE HELP.
THANKS , SAURAV GHOSH
saurav ghosh
We need to understand how the firewall setups are done in your environment like might be some restriction is there also need to check if IP level access are there for you or you need to get that.
Usually in secured setup, for your application, you need to get access on IP and Port to access database server. This is good also but may be more restriction you can bring in.
Also to update in inbound and outbound, is required too at times when you have firewall services on as this is being disabled\stop too in many setup due to application level functionality issues too.
You can definitely go ahead and add these ports, this will not disturb you environment as you are just giving access to sql server available on host which is accessed, how? you need to check, may be your application is accessing through IP not name, application
will look for Port on this IP.
Check some details about it:
http://www.bleepingcomputer.com/tutorials/tcp-and-udp-ports-explained/
Also:
TCP 1433
TCP port 1433 is the default port for SQL Server. This port is also the official Internet Assigned Number Authority (IANA) socket number for SQL Server. Client systems use TCP 1433 to connect to the database engine; SQL Server Management Studio (SSMS) uses
the port to manage SQL Server instances across the network. You can reconfigure SQL Server to listen on a different port, but 1433 is by far the most common implementation.
UDP 1434
UDP port 1434 is used for SQL Server named instances. The SQL Server Browser service listens on this port for incoming connections to a named instance. The service then responds to the client with the TCP port number for the requested named instance.
The SQL Server Browser service listens for incoming connections to a named instance and provides the client the TCP port number that corresponds to that named instance. Normally the SQL Server Browser service is started whenever named instances of the Database
Engine are used. The SQL Server Browser service does not have to be started if the client is configured to connect to the specific port of the named instance.
Understanding this requirement:
http://support.microsoft.com/kb/287932/en-us
Good link: http://msdn.microsoft.com/en-in/library/cc646023.aspx
Hope this helps.
Santosh Singh
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