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Create a Windows Server firewall exclusion rule

If the Windows Server firewall is turned on, you must create a firewall inbound exclusion rule or turn off the firewall.
  1. Open 
    Server Manager
    .
  2. Select 
    Windows Firewall with Advanced Security
     under Configuration.
  3. Click 
    Inbound Rules
     in the working area.
  4. Click 
    New Rule
    .
  5. Select 
    Port
     for the rule type.
  6. Enter the port number. The default port is 1433 unless you are using an instance. If you are using an instance, find the port using Configuration Manager.
  7. Select 
    Allow Connection
    .
  8. Click 
    Apply to all
    .
  9. Provide a name for the rule (for example, SQL Server Connection). Click 
    Finish
    .