From License Server Administrator, click Start. After making the changes, your service.txt file should look something like this: On the VENDOR line, add PORT=#, where # is a specific port number designated by you, to lock the vendor daemon to that specific port (for example, 5152). The file should look similar to this: SERVER this_host ANY 27000įEATURE ACT ARCGIS 1 permanent 1 vendor_info=7KNJDRHFHBK4CFDMJ214 SIGN="052E ABFC 32DD \Ģ473 DEFD E276 4BF3 E0DB 87EB 2203 5A30 C014 19A1 C35E 2154 \Ġ8B1 9460 A2B9 6701 DC4D CAF2 E2FE 1347 0E36 90FA 4F3B E864 \Īt the end of the SERVER line, you can choose to specify a port number for the lmgrd daemon, immediately after ANY (separated with a space). Open Windows Explorer and navigate to your license manager installation location ( C:\Program Files\ArcGIS\LicenseManager\bin by default for ArcGIS License Manager 2021.0 and newer installations), in which you will see a service.txt file. Click Start/Stop License Server in the table of contents and click Stop. Click Start > Programs > ArcGIS > License Server Administrator. During this time, connections to the license manager may be lost. The steps provided require that you briefly stop the license manager. Procedure for locking License Manager to specific ports Please refer to your firewall and operating system help documentation on opening ports. This topic does not explain the procedures required to open your hosts firewall. 
This range was pre-specified for license manager use because of the low traffic in that range. You can also change the lmgrd daemon from the default 27000 to another port between 2709. To secure the license management environment and allow you to implement a firewall, you can lock the ARCGIS daemon to a specific port.
The License manager does not communicate over UDP. It is dynamic, meaning that it can listen on any available TCP port. The ARCGIS daemon, on the second line of the file, is not confined to a particular port range. By default, the lmgrd daemon is set to TCP port 27000. The problem is caused by the firewall often closing or blocking access to the ports the license manager uses to communicate.
Because the license manager uses the TCP/IP protocols, implementing such a firewall can pose problems between the license manager server and the clients connecting to it. Many of today's networks use a firewall for enhanced security from outside threats.
Procedure for locking License Manager to specific ports.
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