You need to modify the firewall settings to allow traffic through fixed TCP/IP port. The following instructions apply to Windows Server 2008.
To allow traffic in fixed TCP/IP ports in Windows Server 2008 on the license server computer:
Use the command line command netstat -anp TCP to find out which ports are in use.
The numbers in the Local Address column after the colon (:) are the port numbers that are in use.
By default, the path is ..\TeklaStructures\License\Server.
The Automatic installation option sets the port to 27007.
Defining the TCP/IP port number on the VENDOR row may slow down the restart time of Tekla Structures Licensing Service.
If you have selected the check box, the modifications do not take effect.
In the Name box, enter lmgrd.
In the Port box, enter the TCP/IP port number that you set in step 3.
lmgrd is added to the list of exceptions.
In the Name box, enter tekla.
In the Port box, enter the TCP/IP port number that you set in step 4.
tekla is added to the list of exceptions.