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Question: Can I change the port of the rlm floating server?

Answer: The port is configurable. You can just edit the license file and change the port (default value is 5053). This will not affect the license itself. The checksum is not affected by changes of the first line in the license.
Then the server is reachable under the new port and, if not already in use, also under the default port.


Example of license file for default port 5053:

HOST localhost ANY 5053
ISV lieber
LICENSE lieber myproduct 2.0 permanent 2 issuer="LieberLieber GmbH" issued=03-may-2019
_ck=aed7535130 sig="60P0452THNQ9HDX6MVYHXU4C0CNR6SK7K4VNYFEJY0947C1RREEDNPDWY6R2HC8"


To change the port to a custom port (e.g. 12345) the first line has to be changed to following:

HOST localhost ANY 12345

Default port and protocol

The license server listens for license requests on all ports configured via licenses (including the enable_vm.lic explained below) using the TCP protocol.

Additionally, the licensing server also uses port 5053 with UDP protocol. This is only needed for the autodiscovery feature of the server, which is disabled in our rlm server configuration.

Enable_vm.lic

The license server also contains an additional license file that enables it to run on virtual machines. This file is named "enable_vm.lic" and looks like this:

HOST localhost ANY 5053
ISV lieber
LICENSE lieber rlm_server_enable_vm 1.0 permanent 1 hostid=ANY
_ck=151efc172d sig="60P0450P81Q9TQDJC08V9YAJ3VG11VUF84W1AJ822H1Q4TP4
K3E44B8H43QB11VSQDTX6CAAPR"

Note that the port configured in this license file does not need to match the port in your license file to receive licenses from the license server.

As such, it is not recommended to change the port configured in this file.


Question: Which ports do I need to open in a firewall?

Answer: The Rlm License Server uses two ports to communicate with the client. Both need to be opened in the firewall.

First port is the TPC port 5053. If you changed the default port then you need to open your custom port.

The second port used by the server changes with every start of the server. To prevent this you can specify this port in the license file:


Example of license file with custom ISV port :

HOST localhost ANY 5053
ISV lieber port=12345
LICENSE lieber myproduct 2.0 permanent 2 issuer="LieberLieber GmbH" issued=03-may-2019
_ck=aed7535130 sig="60P0452THNQ9HDX6MVYHXU4C0CNR6SK7K4VNYFEJY0947C1RREEDNPDWY6R2HC8"


Question: Can I change the host id in the license file?

Answer: No, the host id is part of the signature and can not be changed. If you need to change the host id you need a new license file.


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