I have set up a SQL Server 2008 R2 transactional replication on my network. When I attempted to add a new subscriber, I could not get a connection. The error I received is:
A network-related or instance -specific error has 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: SQL Network Interface, error: 26 - Error Locating Server/ Instance Specified) (Microsoft SQL Server).
I checked to see if I could connect between the two servers on 1433 (using the ip address). I was able to connect using SQL Server Management Studio between both servers. I also checked port 1433 between both servers and that was open. I had scanned the ports while attempting to add a subscriber and it returned that it was using port 1433 and udp 1434. UDP 1434 is not open between the two servers.
Does any know how I can add subscribers through a firewall without opening UDP 1434? Is it possible? Any help or advice is appreciated.